CN209419197U - A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot - Google Patents
A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot Download PDFInfo
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- CN209419197U CN209419197U CN201821968457.1U CN201821968457U CN209419197U CN 209419197 U CN209419197 U CN 209419197U CN 201821968457 U CN201821968457 U CN 201821968457U CN 209419197 U CN209419197 U CN 209419197U
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Abstract
The utility model provides a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot, comprising: STM32F103VCT6 single-chip microcontroller, driving unit, sample detecting unit and power supply unit；Wherein single-chip microcontroller is used to handle the signal in this system and exports control signal to other units；Driving unit is used to receive the tri- phase control signal of PWM of single-chip microcontroller and DC brushless motor is driven to rotate；Sample detecting unit includes sample circuit and contrast circuit, and wherein sample circuit is for acquiring phase current and bus current signal, and for contrast circuit for comparing bus current and preset value, the result of sample detecting unit sends back single-chip microcontroller；Power supply unit is used to carry out power supply each unit use in transformation and feed system.A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot described in the utility model can at work detect the phase current of motor and bus current, prevent motor from overcurrent condition occurs.
Description
Technical field
The utility model belongs to mobile robot control technical field, more particularly, to a kind of coaxial two wheels robot direct current without
Brush motor control system.
Background technique
Mobile robot is a kind of mechanical device that can execute work automatically, can be divided into according to move mode: wheeled machine
The types such as device people, walking robot, caterpillar type robot, climbing robot, squirmy robot and swimming type people, wherein wheeled
Mobile robot, especially coaxial two wheels robot are usually driven by DC brushless motor, and there is motion process flexibly to put down
Surely, long service life, transmission sound are small and the advantages that the range of speeds is wide.
Do not have route over-current detection function in existing the control system for non-brush direct currunt electromotors, when stall occurs for motor
It is easy to cause the electric current in route excessive, and then route is caused to generate heat, gently then destroy the travelling performance of robot, it is heavy then burn electricity
Machine causes robot to damage.
Utility model content
In view of this, the utility model is directed to a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot, with reality
The purpose for now preventing over current of motor from damaging.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot, comprising:
STM32F103VCT6 single-chip microcontroller, for exporting tri- phase control signal of PWM；
Driving unit, for receiving the tri- phase control signal of PWM of single-chip microcontroller and DC brushless motor driven to rotate, including knot
The identical revolver driving circuit of structure and right wheel driving circuit；
The revolver driving circuit includes: U phase driving circuit, and input terminal connects 67 and 52 stitch of single-chip microcontroller, is used for
Control the on and off of two metal-oxide-semiconductors in revolver motor U phase；V phase driving circuit, input terminal connect the 68 and 53 of single-chip microcontroller
Stitch, for controlling the on and off of two metal-oxide-semiconductors in revolver motor V phase；W phase driving circuit, input terminal connect monolithic
69 and 54 stitch of machine, for controlling the on and off of two metal-oxide-semiconductors in revolver motor W phase；
The right wheel driving circuit includes: U phase driving circuit, and input terminal connects 63 and 32 stitch of single-chip microcontroller, is used for
Control the on and off of two metal-oxide-semiconductors in right wheel motor U phase；V phase driving circuit, input terminal connect the 64 and 35 of single-chip microcontroller
Stitch, for controlling the on and off of two metal-oxide-semiconductors in right wheel motor V phase；W phase driving circuit, input terminal connect monolithic
65 and 36 stitch of machine, for controlling the on and off of two metal-oxide-semiconductors in right wheel motor W phase；
Sample detecting unit, including sample circuit and contrast circuit, the sample circuit for acquire electric machine phase current and
Bus current signal, and fidelity processing is carried out to it, including phase current circuit and bus current circuit；
The input terminal of the phase current circuit connects the single-phase sampling resistor of each phase driving circuit of motor, wherein revolver motor
The output end of U, V, W phase phase current circuit be separately connected 15,16,17 stitch of single-chip microcontroller, U, the V, W Xiang Xiang electricity of right wheel motor
The output end of current circuit is separately connected 26,29,30 stitch of single-chip microcontroller；The input terminal connection bus of the bus current circuit is adopted
Sample resistance, wherein the bus current circuit output end of revolver motor connects 18 stitch of single-chip microcontroller, the bus current of right wheel motor
31 stitch of circuit output end connection single-chip microcontroller；
The contrast circuit is for comparing the output signal of bus current circuit with preset value, and wherein revolver compares
18 stitch of the input terminal connection single-chip microcontroller of circuit, output end connect 51 stitch of single-chip microcontroller, the input terminal of right wheel contrast circuit
31 stitch of single-chip microcontroller are connected, output end connects 91 stitch of single-chip microcontroller；
Power supply unit is used for carrying out each unit in transformation and feed system to power supply.
Further, the driving circuit includes:
IR2101S analog line driver, for driving to the three-phase metal-oxide-semiconductor on motor, 2,3 stitch of driver are received
Pwm signal, 7,6 stitch are separately connected the grid of the metal-oxide-semiconductor of bridge arm and lower bridge arm；
Bootstrap module, it is described for promoting the voltage of upper bridge arm metal-oxide-semiconductor, including booster diode and boost capacitor
The anode connection supply voltage of booster diode, cathode connect 8 stitch of driver, and the anode connection of the boost capacitor rises
The cathode of diode is pressed, the cathode of boost capacitor connects the source electrode of upper bridge arm metal-oxide-semiconductor.
Further, the first end of the single-phase sampling resistor is connected with the drain electrode of lower bridge arm metal-oxide-semiconductor, and second end connection is female
The first end of line sampling resistor, the second end ground connection of the bus sampling resistor.
Further, the sample detecting module further includes reference circuit, and the reference circuit is used to generate reference voltage,
The reference voltage is for supplying sample circuit use.
Further, the reference circuit includes the first operational amplifier, the first divider resistance, the second divider resistance, the
One protection capacitor and the second protection capacitor；
The first end of first divider resistance connects supply voltage, the first end phase of second end and the second divider resistance
Even, the second end ground connection of second divider resistance；The positive input and the first divider resistance of first operational amplifier
Second end be connected, reverse input end is connected with itself output end, output end output reference voltage；The first protection electricity
The anode of appearance is connected with the positive power source terminal of the first operational amplifier, cathode ground connection；The negative power end of first operational amplifier
Ground connection；The anode of second protection capacitor is connected with the output end of the first operational amplifier, cathode ground connection.
Further, the sample circuit includes second operational amplifier, first resistor, second resistance, 3rd resistor,
Four resistance, the 5th resistance, the 6th resistance, the 7th resistance, first capacitor and the second capacitor；
The first end of the first resistor is connected with single-phase sampling resistor, and second end connects the first end of second resistance；Institute
State the positive input of the second end connection second operational amplifier of second resistance；The first end connection second of the 3rd resistor
The second end of resistance, second end connect the output end of the reference module, for importing reference voltage to sample circuit, and to reference
Voltage plays pressure stabilization function；The anode of the first capacitor is connected with the second end of first resistor, and the first of cathode and the 4th resistance
End is connected, for reducing signal interference；The second end of 4th resistance is grounded, for preventing sample circuit distorted signals；Institute
The first end of output the 7th resistance of connection of second operational amplifier is stated, the second end of the 7th resistance connects single-chip microcontroller；Second fortune
The inverse output terminal for calculating amplifier connects the first end of the 6th resistance, and the second end of the 6th resistance connects the first of the 7th resistance
End；The first end of 5th resistance is connected with the first end of the 4th resistance, and second end connects the first end of the 6th resistance；Institute
State the second end of anode the 7th resistance of connection of the second capacitor, cathode ground connection.
Further, the contrast circuit includes third operational amplifier, the 8th resistance, the 9th resistance, the tenth resistance,
11 resistance, twelfth resistor, third capacitor, the 4th capacitor and the 5th capacitor；
The output end of the first end connection bus sample circuit of 8th resistance, second end connect third operational amplifier
Reverse input end；The first end of 9th resistance connects supply voltage, and second end connects the forward direction of third operational amplifier
Input terminal；The output end of the third operational amplifier connects the first end of the tenth resistance, and the second end of the tenth resistance connects single
Piece machine；The first end of the eleventh resistor connects the second end of the 9th resistance, second end ground connection；The third capacitor is just
Pole connects the second end of the 8th resistance, cathode ground connection；The first end of the twelfth resistor connects the second end of the tenth resistance,
Its second end connects supply voltage；The second end of anode the tenth resistance of connection of 4th capacitor, cathode ground connection；Described
The positive power source terminal of the anode connection third operational amplifier of five capacitors, cathode ground connection, the negative power end of third operational amplifier
Ground connection.
Further, the driving circuit further includes PWM Shaping Module, the PWM three-phase signal for generating single-chip microcontroller
It is shaped as meeting the form of motor work, comprising: 74LV244APW chip, the first buffer resistance, the second buffer resistance, first protect
True capacitor and the second fidelity capacitor；
The first end of first buffer resistance connects supply voltage, and second end connects the first end of the second buffer resistance,
The second end of second buffer resistance is separately connected 1 stitch and 19 stitch of 74LV244APW chip；The first fidelity electricity
The second end of anode the second buffer resistance of connection of appearance, cathode ground connection；The first end of first buffer resistance connects power supply
Voltage, second end connect the first end of the second buffer resistance；
20 stitch of the 74LV244APW chip connect supply voltage, 8,10,17 stitch ground connection；74LV244APW chip
2,11 stitch receive single-chip microcontroller U phase pwm signal, the signal after 74LV244APW chip shaping in 18,9 stitch export；
4,13 stitch receive the pwm signal of single-chip microcontroller V phase, which exports after 74LV244APW chip shaping in 16,7 stitch；
6,15 stitch receive the pwm signal of single-chip microcontroller W phase, which exports after 74LV244APW chip shaping in 14,5 stitch.
Further, this control system further includes Hall detection unit, for receiving the letter of motor Hall sensor sending
Number, and transmit the result in single-chip microcontroller, wherein the Hall detection unit of revolver motor connects 92,93,95 stitch of single-chip microcontroller,
23,24,25 stitch of the Hall detection unit connection single-chip microcontroller of right wheel motor.
Further, the Hall detection unit includes five needle connectors, the first filter module, 74AHC14D chip and the
Two filter modules；
The five needles connector is for the signal on motor Hall sensor to be transferred to inside Hall detection unit, and 1
Stitch connects supply voltage, 5 stitch ground connection, and 2,3,4 stitch are connected with the input terminal of first filter module respectively；
The output end of three first filter modules is separately connected the 1st of 74AHC14D chip the, 2,5 stitch, described
2,4,6 stitch of 74AHC14D chip are connected with the input terminal of second filter module respectively；
The output end of second filter module connects single-chip microcontroller.
Further, first filter module includes the first filter resistance, the second filter resistance and the first filter capacitor；
The first end of first filter resistance connects five needle connectors, and second end connects 74AHC14D chip；Second filtered electrical
The first end of group connects operating voltage, and second end connects the first end of the first filter resistance；The anode of first filter capacitor
Connect the second end of the first filter resistance, cathode ground connection.
Further, second filter module includes third filter resistance and the second filter capacitor；The third filtering
The first end of resistance connects 74AHC14D chip, and second end connects single-chip microcontroller；The anode connection third of second filter capacitor
The second end of filter resistance, cathode ground connection.
Further, this control system further includes communication unit, for realizing the signal communication of single-chip microcontroller and host computer,
Signal output end connects 79 stitch of single-chip microcontroller, and signal input part connects 78 stitch of single-chip microcontroller.
Further, the communication unit includes SP3232EEN chip and protective module；
The protective module includes the first inhibition diode, the second inhibition diode, the first inhibition capacitor, the second inhibition electricity
Appearance, the first protective resistance and the second protective resistance；
Described first inhibits the first end ground connection of diode, and second end connects the first end of the first protective resistance, and first protects
13 stitch of the second end connection SP3232EEN chip of resistance are protected, described first inhibits anode connection the first protection electricity of capacitor
The first end of resistance, cathode ground connection；Described second inhibits the first end of first end connection the first inhibition diode of diode, the
Two ends connect the first end of the second protective resistance, 14 needles of the second end connection SP3232EEN chip of second protective resistance
Foot, described second inhibits the first end of anode connection the second protection capacitor of capacitor, cathode ground connection；
Conversion of the SP3232EEN chip for realizing signal between RS232 and TTL format, 11 stitch receive
Single-chip microcomputer signal, 12 stitch transmit signal to single-chip microcontroller.
Further, said supply unit includes the first conversion circuit, the second conversion circuit and third conversion circuit；
First conversion circuit is used to convert 15V supply voltage, including LM2596-ADJ core for 24V supply voltage
Piece, first diode, the second diode, the first storage capacitor, the second storage capacitor, third storage capacitor, the 4th storage capacitor,
First inductance, the first buffering capacitor and the second buffering capacitor；
The anode connection 24V operating voltage of the first diode, cathode connect 1 stitch of LM2596-ADJ chip；Institute
The anode for stating the first storage capacitor and the second storage capacitor is connected with the anode of first diode, and cathode is grounded；Described
The anode of three storage capacitors and the 4th storage capacitor is connected with the cathode of first diode, and cathode is grounded；It is described
2 stitch of LM2596-ADJ chip connect the first end of the first inductance, and the second end of the first inductance exports 15V supply voltage；Institute
The cathode for stating the second diode connects the first end of the first inductance, cathode ground connection；The first buffering capacitor and the second buffering
The anode of capacitor is connected with the second end of the first inductance, and cathode is grounded；
Second conversion circuit is used to convert 5V supply voltage for 15V supply voltage, including LM2596-5 chip, the
Three diodes, the 5th storage capacitor, the 6th storage capacitor, the second inductance, the 4th buffering capacitor and the 5th buffering capacitor；
1 stitch of the LM2596-5 chip connects 15V supply voltage, and 2 stitch connect the first end of the second inductance, described
The second end of second inductance exports 5V supply voltage；The cathode of the third diode is connected with the first end of the second inductance,
Plus earth；The anode of the 4th buffering capacitor and the 5th buffering capacitor is connected with the second end of the second inductance, cathode
It is grounded；
The third conversion circuit is used to convert 3.3V supply voltage, including LM1117-3V3 core for 5V supply voltage
Piece, the 7th storage capacitor, the 8th storage capacitor, the 6th buffering capacitor and the 7th buffering capacitor；
1 stitch of the LM1117-3V3 chip connects 5V supply voltage, and 2 stitch export 3.3V supply voltage；Described
The anode of seven storage capacitors and the 8th storage capacitor is connected with 1 stitch of LM1117-3V3 chip, and cathode is grounded；It is described
The anode of 6th buffering capacitor and the 7th buffering capacitor is connected with 2 stitch of LM1117-3V3 chip, and cathode is grounded.
Further, first conversion circuit includes the first sampling feedback module, for feeding back to output voltage
LM2596-ADJ chip, including the first feedback resistance, the second feedback resistance and third buffer capacitor；
The second end of anode the first inductance of connection of the third buffering capacitor, cathode connect the 4 of LM2596-ADJ chip
Stitch；The anode of the first end connection third buffering capacitor of first feedback resistance, second end connect the second feedback resistance
First end, the second end ground connection of the second feedback resistance.
Further, second conversion circuit includes the second sampling feedback module, for feeding back to output voltage
LM2596-5 chip, including third feedback resistance；The first end of the third feedback resistance connects the second end of the second inductance,
4 stitch of second end connection LM2596-5 chip.
Compared with the existing technology, the control system for non-brush direct currunt electromotors tool of a kind of coaxial two wheels robot described in the utility model
There is following advantage:
(1) the control system for non-brush direct currunt electromotors of a kind of coaxial two wheels robot described in the utility model, passes through sample detecting
Unit is sampled the phase current and bus current of motor, and wherein phase current is delivered to inside single-chip microcontroller and is compared, bus
Current transmission to contrast circuit is compared, and real-time monitoring is carried out to line status according to comparison result, so that monolithic function
Enough rotations for cutting off motor in time when over-current phenomenon avoidance occurs, prevent route overcurrent damage motor.
(2) the control system for non-brush direct currunt electromotors of a kind of coaxial two wheels robot described in the utility model can be passed by Hall
The velocity of rotation of sensor real-time monitoring motor, it is convenient that the travel speed of robot is controlled.In addition, its Hall detection unit
Interference of the signal in transmitting can be eliminated, guarantees the accuracy of signal transmission.
(3) a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot, communication unit described in the present embodiment have
Protecting against shock function protects the normal work of communication chip by Transient Suppression Diode, it is ensured that control the accurate transmission of signal.
(4) a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot described in the present embodiment, power supply unit can
15V, supply driving unit work are converted by the supply voltage of 24V, then converts 5V for 15V voltage, supply Hall detection is single
Member work finally converts 3.3V, supply single-chip microcontroller, sample detecting unit and communication unit work, so that system for 5V voltage
Interior power supply line is more reasonable, without adding multiple power supplys.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is that a kind of the control system for non-brush direct currunt electromotors control of coaxial two wheels robot described in the utility model embodiment is former
Manage block diagram；
Fig. 2 is the circuit connection diagram of single-phase driving circuit described in the utility model embodiment；
Fig. 3 is the circuit connection diagram of PWM Shaping Module described in the utility model embodiment；
Fig. 4 is the circuit connection diagram of sample circuit described in the utility model embodiment；
Fig. 5 is the circuit connection diagram of reference circuit described in the utility model embodiment；
Fig. 6 is the circuit connection diagram of contrast circuit described in the utility model embodiment；
Fig. 7 is the circuit connection diagram of Hall detection unit described in the utility model embodiment；
Fig. 8 is the circuit connection diagram of communication unit described in the utility model embodiment；
Fig. 9 is the circuit connection diagram of the first conversion circuit described in the utility model embodiment；
Figure 10 is the circuit connection diagram of the second conversion circuit described in the utility model embodiment；
Figure 11 is the circuit connection diagram of third conversion circuit described in the utility model embodiment.
Description of symbols:
1- single-chip microcontroller；2- driving unit；The single-phase sampling resistor of 21-；22- bus sampling resistor；23- booster diode；24-
Boost capacitor；The upper bridge arm metal-oxide-semiconductor of 25-；26- lower bridge arm metal-oxide-semiconductor；27- driver；28-74LV244APW chip；29- first is slow
Rush resistance；The second buffer resistance of 210-；211- the first fidelity capacitor；212- the second fidelity capacitor；3- sample detecting unit；31-
First divider resistance；The second divider resistance of 32-；33- first protects capacitor；34- second protects capacitor；The first operation amplifier of 35-
Device；36- first resistor；37- second resistance；38- 3rd resistor；The 4th resistance of 39-；The 5th resistance of 310-；The 6th resistance of 311-；
The 7th resistance of 312-；313- first capacitor；The second capacitor of 314-；315- second operational amplifier；The 8th resistance of 316-；317-
Nine resistance；The tenth resistance of 318-；319- eleventh resistor；320- twelfth resistor；321- third capacitor；The 4th capacitor of 322-；
The 5th capacitor of 323-；324- third operational amplifier；4- power supply unit；41-LM2596-ADJ chip；42- first diode；
The second diode of 43-；The first storage capacitor of 44-；The second storage capacitor of 45-；46- third storage capacitor；47- the 4th energy storage electricity
Hold；The first feedback resistance of 48-；The second feedback resistance of 49-；The first inductance of 410-；411- first buffers capacitor；412- second is buffered
Capacitor；413- third buffers capacitor；414-LM2596-5 chip；415- third diode；The 5th storage capacitor of 416-；417-
Six storage capacitors；418- third feedback resistance；The second inductance of 419-；420- the 4th buffers capacitor；421- the 5th buffers capacitor；
422-LM1117-3V3 chip；The 7th storage capacitor of 423-；The 8th storage capacitor of 424-；425- the 6th buffers capacitor；426-
Seven buffering capacitors；5- Hall detection unit；The first filter resistance of 51-；The second filter resistance of 52-；The first filter capacitor of 53-；54-
Third filter resistance；The second filter capacitor of 55-；Five needle connector of 56-；57-74AHC14D chip；6- communication unit；61-
SP3232EEN chip；The first protective resistance of 62-；The second protective resistance of 63-；64- first inhibits capacitor；65- second inhibits electricity
Hold；66- first inhibits diode；67- second inhibits diode.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot, comprising: STM32F103VCT6 single-chip microcontroller 1, driving are single
Member 2, sample detecting unit 3, power supply unit 4, communication unit 6 and Hall detection unit 5, are as shown in Figure 1 this control system
Control principle block diagram.
For each power supply with electric device of this system both from power supply unit 4, the power supply 4 can be by the straight of 24V
Voltage needed for galvanic electricity is converted into each unit work, power supply 4 includes: the first conversion circuit, the second conversion circuit and third
Conversion circuit.
It as shown in Fig. 9, is the circuit diagram of the first conversion circuit, which can be turned the direct current of 24V by DC/DC
Turn to the direct current of 15V, specifically, the circuit include: LM2596-ADJ chip 41, first diode 42, the second diode 43,
First storage capacitor 44, the second storage capacitor 45, third storage capacitor 46, the 4th storage capacitor 47, the first inductance 410, first
Buffer capacitor 411 and the second buffering capacitor 412.
Wherein the first storage capacitor 44, the second storage capacitor 45, third storage capacitor 46 and the 4th storage capacitor 47 can
Play the role of energy storage filtering, first diode 42 can prevent third storage capacitor 46 and the 4th storage capacitor 47 in electric discharge
Adverse current occurs, the second diode 43 is freewheeling diode, which can be when the load current of the first inductance 410 mutates
This fluctuation is weakened, the other elements in circuit is avoided to damage.
The anode connection 24V operating voltage of the first diode 42, cathode connect 1 needle of LM2596-ADJ chip 41
Foot；The anode of first storage capacitor 44 and the second storage capacitor 45 is connected with the anode of first diode 42, and cathode is grounded；
The anode of third storage capacitor 46 and the 4th storage capacitor 47 is connected with the cathode of first diode 42, and cathode is grounded；
2 stitch of LM2596-ADJ chip 41 connect the first end of the first inductance 410, and the second end of the first inductance 410 exports 15V power supply
Voltage；The cathode of second diode 43 connects the first end of the first inductance 410, cathode ground connection；First buffering capacitor 411 and the
The anode of two buffering capacitors 412 is connected with the second end of the first inductance 410, and cathode is grounded.
In addition, 3 stitch of LM2596-ADJ chip 41 and 5 stitch ground connection, carry out ground protection to the chip.
Preferably, the first sampling feedback module for stabilizing the output voltage is equipped in the first conversion circuit, comprising: first
Feedback resistance 48, the second feedback resistance 49 and third buffer capacitor 413.
The second end of anode the first inductance 410 of connection of the third buffering capacitor 413, cathode connect LM2596-ADJ core
4 stitch of piece 41；The anode of the first end connection third buffering capacitor of first feedback resistance 48, second end connection second are anti-
The first end of feed resistance 49, the second end ground connection of the second feedback resistance 49.
It as shown in Fig. 10, is the circuit diagram of the second conversion circuit, which can pass through DC/DC for the direct current of 15V
It is converted into the direct current of 5V, specifically, the circuit includes: LM2596-5 chip 414, third diode 415, the 5th storage capacitor
416, the 6th storage capacitor 417, the second inductance the 419, the 4th buffering capacitor 420 and the 5th buffering capacitor 421.
Wherein the 5th storage capacitor 416 and the 6th storage capacitor 417 can play the role of energy storage filtering, third diode
415 be freewheeling diode.
1 stitch of the LM2596-5 chip 414 connects 15V supply voltage, and 2 stitch connect the first of the second inductance 419
The second end at end, the second inductance 419 exports 5V supply voltage；The first end of the cathode of third diode 415 and the second inductance 419
It is connected, plus earth；Second end of the anode of 4th buffering capacitor 420 and the 5th buffering capacitor 421 with the second inductance 419
It is connected, cathode is grounded.
In addition, 3 stitch of LM2596-5 chip 414 and 5 stitch ground connection, carry out ground protection to the chip.
Preferably, the third feedback resistance 418 for stabilizing the output voltage is equipped in the second conversion circuit, the third is anti-
The first end of feed resistance 418 connects the second end of the second inductance 419, and second end connects 4 stitch of LM2596-5 chip 414.
Optionally, the first conversion circuit output electricity can be realized with the substitution of third feedback resistance 418 first sampling feedback module
The stabilization of pressure.
It as shown in Fig. 11, is the circuit diagram of third conversion circuit, which can be 3.3V by the DC conversion of 5V
Direct current, specifically, the circuit include: LM1117-3V3 chip 422, the 7th storage capacitor 423, the 8th storage capacitor 424,
6th buffering capacitor 425 and the 7th buffering capacitor 426.
1 stitch of the LM1117-3V3 chip 422 connects 5V supply voltage, and 2 stitch export 3.3V supply voltage；7th
The anode of storage capacitor 423 and the 8th storage capacitor 424 is connected with 1 stitch of LM1117-3V3 chip 422, and cathode connects
Ground；The anode of 6th buffering capacitor 425 and the 7th buffering capacitor 426 is connected with 2 stitch of LM1117-3V3 chip 422,
Cathode is grounded.
In addition, 3 stitch of LM1117-3V3 chip 422 are grounded, ground protection is carried out to the chip.
Core control component in this system is STM32F103VCT6 single-chip microcontroller 1, can receive the external world by single-chip microcontroller 1
Signal is controlled, and two direct current generators of robot are controlled.Drive the process of robot motion real by pwm signal
It is existing, specifically, two advanced timers (timer 1 and timer 8) on single-chip microcontroller 1 can export U, V, W three-phase PWM letter
Number, after pwm signal is sent to driving unit 2, driving unit 2 will drive the left and right two-wheeled of robot to rotate respectively, from
And it controls robot and is moved.
The driving unit 2 includes the identical revolver driving circuit of structure and right wheel driving circuit, the driving circuit root
It is divided into 3 types: U phase driving circuit, V phase driving circuit W phase driving circuit, the element connection of three-phase drive circuit according to pwm signal
It is completely the same.Specifically, in revolver motor driving circuit, 67 and 52 needles of the input terminal connection single-chip microcontroller 1 of U phase driving circuit
Foot, 68 and 53 stitch of the input terminal connection single-chip microcontroller 1 of V phase driving circuit；The input terminal of W phase driving circuit connects single-chip microcontroller 1
69 and 54 stitch.In right wheel motor-drive circuit, 63 and 32 stitch of the input terminal connection single-chip microcontroller 1 of U phase driving circuit；
64 and 35 stitch of the input terminal connection single-chip microcontroller 1 of V phase driving circuit；The 65 of the input terminal connection single-chip microcontroller 1 of W phase driving circuit
With 36 stitch.
Attached drawing 2 is the connection schematic diagram of single-phase driving circuit, and as seen from the figure, single-phase driving circuit figure includes: IR2101S function
Rate driver 27, upper bridge arm metal-oxide-semiconductor 25, lower bridge arm metal-oxide-semiconductor 26 and Bootstrap module.
Wherein, IR2101S analog line driver 27 receives pwm signal, and switches the on or off state of metal-oxide-semiconductor.Specifically
, driver 27 is equipped with 8 stitch, wherein 1 stitch connects 15V supply voltage, provides work energy, 4 needles for driver 27
Foot ground connection, for protecting driver 27.2 stitch and 3 stitch of driver 27 are that pwm signal inputs stitch, what single-chip microcontroller generated
PWM-P type signal enters driver 27 from 2 stitch, and by the upper bridge arm metal-oxide-semiconductor 25 of 7 stitch guiding, and what single-chip microcontroller generated
PWM-N type signal enters driver 27 from 3 stitch, and is oriented to lower bridge arm metal-oxide-semiconductor 26 by 6 stitch.
It optionally, can be in the conducting wire of 2 stitch and 3 stitch to reduce the impact that signal enters IR2101S analog line driver 27
On buffer resistance is respectively set.Likewise, buffer resistance can also be arranged on the conducting wire between driver 27 and metal-oxide-semiconductor, it is used for
Reduce impact of the signal to metal-oxide-semiconductor.Illustratively, the buffer resistance resistance value in single-phase driving circuit is 100 Ω ± 1%.
The upper driving of bridge arm metal-oxide-semiconductor 25 failure, is arranged in single-phase driving circuit caused by avoid because of operating voltage deficiency
Bootstrap module promotes the voltage of driver 27 upward bridge arm metal-oxide-semiconductor 25 output.Specifically, Bootstrap module includes
Booster diode 23 and boost capacitor 24, the anode connection 15V voltage of booster diode 23, cathode connect the 8 of driver 27
Stitch, the cathode of the anode connection booster diode 23 of the boost capacitor 24, the cathode of boost capacitor 24 connect upper bridge arm MOS
The source electrode of pipe 25.
Upper bridge arm metal-oxide-semiconductor and lower bridge arm metal-oxide-semiconductor described in the present embodiment are N-channel MOS pipe, therefore supply metal-oxide-semiconductor
The power supply acted is accessed from the drain electrode of upper bridge arm metal-oxide-semiconductor 25, drain electrode and the upper bridge arm metal-oxide-semiconductor 25 of lower bridge arm metal-oxide-semiconductor 26
Source electrode is connected, and the source electrode of lower bridge arm metal-oxide-semiconductor 26 is then connected with unidirectional sampling resistor 21, the signal for driving metal-oxide-semiconductor to be acted
Then accessed by the grid of metal-oxide-semiconductor.
When driving circuit drives motor to rotate, it is in out of phase metal-oxide-semiconductor alternate conduction, specifically, co-existing in six kinds
Conduction mode: bridge arm is connected with V phase lower bridge arm in U phase；Bridge arm is connected with W phase lower bridge arm in U phase；Bridge arm and bridge under U phase in V phase
Arm conducting；Bridge arm is connected with W phase lower bridge arm in V phase；Bridge arm is connected with U phase lower bridge arm in W phase；Bridge arm and V phase lower bridge arm in W phase
Conducting.
It preferably, in the driving circuit further include PWM sizing die to promote the smoothness of motor rotation and reducing impact
Block, the PWM waveform that the PWM Shaping Module can generate single-chip microcontroller 1 optimizes, and the pwm signal after optimization is oriented to
IR2101S analog line driver 27 illustratively can be shaped as the square pulse that constant amplitude is wide or constant amplitude is not wide, to mention
Rise the smooth movement degree of DC brushless motor.
Attached drawing 3 is the circuit connection diagram of PWM Shaping Module, as shown, PWM Shaping Module includes: 74LV244APW core
Piece 28, the first buffer resistance 29, the second buffer resistance 210, the first fidelity capacitor 211 and the second fidelity capacitor 212.
Wherein, the first buffer resistance 29 and the second buffer resistance 210 can reduce impact when signal inputs, and guarantee signal
Stabilization；First guarantee capacitor 211 and second guarantee capacitor 212 can anti-stop signal be distorted in reforming process.
The first end of first buffer resistance 29 connects 3.3V voltage, and second end connects the of the second buffer resistance 210
One end, the second end of the second buffer resistance 210 are separately connected 1 stitch and 19 stitch of 74LV244APW chip 28；First fidelity
The second end of anode the second buffer resistance 210 of connection of capacitor 211, cathode ground connection；The first end of first buffer resistance 29 connects
3.3V voltage is connect, second end connects the first end of the second buffer resistance 210.
20 stitch are shared on the 74LV244APW chip 28, wherein the 3.3V electricity of 20 stitch access supply chip operation
Pressure, 8 stitch, 17 stitch and 10 stitch ground connection.2 stitch of chip receive the U phase p-type pwm signal of single-chip microcontroller, and 11 stitch receive single
The U phase N-type pwm signal of piece machine；4 stitch of chip receive the V phase p-type pwm signal of single-chip microcontroller, and 13 stitch receive the V of single-chip microcontroller
Phase N-type pwm signal；6 stitch of chip receive the W of single-chip microcontroller to phase p-type pwm signal, and 15 stitch receive the W phase N-type of single-chip microcontroller
Pwm signal.After shaping, 18 stitch of chip export U phase p-type signal, and 9 stitch export U phase N-type signal；16 needles of chip
Foot exports V phase p-type signal, and 7 stitch export V phase N-type signal；14 stitch of chip export W phase p-type signal, and 5 stitch export W phase N
Type signal.
It is burnt to prevent the motor of robot from route overcurrent occurs in the course of work, the present embodiment is provided with sampling inspection
Survey unit 3.The sample detecting unit 3 include sample circuit and contrast circuit, the sample circuit include phase current circuit and
Bus current circuit, phase current circuit and bus current circuit are the synchronous amplifying circuit of 1:1, can believe collected electric current
Number carry out fidelity conveying, it is ensured that the accuracy of signal.
Current information of the phase current circuit with acquisition motor single-phase PWM signal branch, input terminal connection setting are being driven
Single-phase sampling resistor 21 on dynamic circuit, output end connect the reception stitch on single-chip microcontroller 1.Specifically, the phase of detection revolver U phase
Current circuit output end connects 15 stitch of single-chip microcontroller 1,16 stitch of the phase current circuit output end connection single-chip microcontroller 1 of V phase, W
17 stitch of the phase current circuit output end connection single-chip microcontroller 1 of phase；The phase current circuit output end for detecting right wheel U phase connects monolithic
26 stitch of machine 1,29 stitch of the phase current circuit output end connection single-chip microcontroller 1 of V phase, the phase current circuit output end of W phase connect
Connect 30 stitch of single-chip microcontroller 1.
Bus current circuit is used to acquire the current information of motor PWM signal bus, and input terminal connection setting is driving
Bus sampling resistor 22 on circuit, output end connect contrast circuit.
One end of the bus sampling resistor 22 is connected with the single-phase sampling resistor 21 of U phase, V phase and W phase respectively, and bus is adopted
The other end of sample resistance 22 is grounded.Since the electric current that the PWM bus of motor passes through is larger, bus is easiest to that overcurrent burning occurs
It ruins, setting bus sampling resistor 22 can be cooperated with single-phase sampling resistor 21, and real-time display goes out the electric current of each route of motor
Load, it is the timely cutting motor progress of work that overcurrent, which occurs, in any route, protects motor to the full extent.
It is illustrated in figure 4 the schematic diagram of sample circuit, as shown, the circuit includes: second operational amplifier 315,
One resistance 36, second resistance 37,3rd resistor 38, the 4th resistance 39, the 5th resistance 310, the 6th resistance 311, the 7th resistance
312, first capacitor 313 and the second capacitor 314.
Wherein, first resistor 36 and second resistance 37 are for buffering collected current signal, 3rd resistor 38
It is lost in circuit for carrying out pressure stabilizing buffering, the 4th resistance 39 and the second capacitor 314 to reference voltage for anti-stop signal
Very, for carrying out current limliting, first capacitor 313 is dry for reducing signal for the 5th resistance 310, the 6th resistance 311 and the 7th resistance 312
It disturbs.
The first end of the first resistor 36 is connected with single-phase sampling resistor 21, and second end connects the first of second resistance 37
End；The positive input of the second end connection second operational amplifier 315 of second resistance 37；The first end of 3rd resistor 38 connects
The second end of second resistance 37, second end access reference voltage；The anode and the second end of first resistor 36 of first capacitor 313
It is connected, cathode is connected with the first end of the 4th resistance 39, the second end ground connection of the 4th resistance 39.
The first end of output the 7th resistance 312 of connection of the second operational amplifier 315, the second of the 7th resistance 312
End connection single-chip microcontroller 1；The inverse output terminal of second operational amplifier 315 and 312 phase of the 7th resistance that itself output end is set
Even, negative feedback loop is constituted, guarantees that second operational amplifier 315 is in linear operating region.
The first end of 5th resistance 310 is connected with the first end of the 4th resistance 39, and second end connects the 6th resistance
311 first end；The second end of anode the 7th resistance 312 of connection of second capacitor 314, cathode ground connection.
Preferably, reference voltage is generated by reference circuit in the present embodiment, and attached drawing 5 is the circuit connection diagram of reference circuit.
As shown, reference circuit includes: the first operational amplifier 35, the first divider resistance 31, the protection of the second divider resistance 32, first
Capacitor 33 and the second protection capacitor 34.
Wherein, the resistance value of the first divider resistance 31 and the second divider resistance 32 is equal, for input reference circuit
3.3V voltage is divided；First protection capacitor 33 and the second protection capacitor 34 can ensure the normal work of the first operational amplifier 35
Make, reliable and stable reference voltage is provided.
The first end of first divider resistance 31 connects 3.3V voltage, the first end of second end and the second divider resistance 32
It is connected, the second end ground connection of the second divider resistance 32.
The positive input of first operational amplifier 35 is connected with the second end of the first divider resistance 31, reverse input end
It is connected with itself output end, constitutes negative feedback loop, output end is to sample circuit output reference voltage.
The anode of the first protection capacitor 33 is connected with the positive power source terminal of the first operational amplifier 35, cathode ground connection；The
The negative power end of one operational amplifier 35 is grounded；The output end phase of the anode and the first operational amplifier 35 of second protection capacitor 34
Even, cathode ground connection.
Since two divider resistance resistance values in reference circuit are equal, and reference circuit is the synchronous amplifying circuit of 1:1, therefore
Its reference voltage exported is 1.65V.Reference voltage can be the output valve of sample circuit in the course of work of sample circuit
A benchmark is provided, on this benchmark, sample circuit can be changed output signal according to the variation of input signal.
The value of bus current circuit output can be compared by contrast circuit with desired value, and by comparing result with level
The form of signal feeds back to single-chip microcontroller 1.Non-limiting as example, the desired value of bus current is 11.9A, when actual value is greater than
When desired value, contrast circuit exports low level, and single-chip microcontroller 1 cuts off the progress of work of motor；It is right when actual value is less than desired value
Than circuit output high level, single-chip microcontroller 1 continues that motor is driven to work.Specifically, pair for carrying out revolver bus current detection
Than 18 stitch of circuit output end connection single-chip microcontroller 1, the contrast circuit output end for carrying out right wheel bus current detection is connected
31 stitch of single-chip microcontroller 1.
Attached drawing 6 is the schematic diagram of contrast circuit, and as figure shows, contrast circuit includes: third operational amplifier the 324, the 8th
Resistance 316, the 9th resistance 317, the tenth resistance 318, eleventh resistor 319, twelfth resistor 320, third capacitor the 321, the 4th
Capacitor 322 and the 5th capacitor 323.
Wherein, third capacitor 321, the 4th capacitor 322 and the 5th capacitor 323 can be to the works of third operational amplifier 324
Stabilization is played, the accuracy of comparison result is promoted；8th resistance 316, the 9th resistance 317, the tenth resistance the 318, the tenth
One resistance 319 can make stability of the promotion signal in contrast circuit.
The output end of the first end connection bus sample circuit of 8th resistance 316, second end connection third operation are put
The reverse input end of big device 324；The first end of 9th resistance 317 connects supply voltage, and second end connects third operational amplifier
324 positive input；The output end of third operational amplifier 324 connects the first end of the tenth resistance 318, the tenth resistance 318
Second end connect single-chip microcontroller 1；The first end of eleventh resistor 319 connects the second end of the 9th resistance 317, the second termination
Ground；The second end of anode the 8th resistance 316 of connection of third capacitor 321, cathode ground connection；The first end of twelfth resistor 320
The second end of the tenth resistance 318 is connected, second end connects supply voltage；Anode the tenth resistance 318 of connection of 4th capacitor 322
Second end, cathode ground connection；The positive power source terminal of the anode connection third operational amplifier 324 of 5th capacitor 323, cathode connect
Ground, the negative power end ground connection of third operational amplifier 324.
In addition, this system further includes Hall detection unit 5, which can receive the letter that Hall sensor is sent on motor
Number, judge real-time revolving speed and the inner rotator position of motor, single-chip microcontroller 1 is facilitated to drive DC brushless motor.
Attached drawing 7 is the circuit connection diagram of Hall detection unit 5, and as figure shows, Hall detection unit includes that five needles connect
Plug-in unit 56, the first filter module, 74AHC14D chip 57 and the second filter module.The five needles connector 56 is for connecting Hall
Sensor and the first filter module, 1 stitch connect 5V voltage, 5 stitch ground connection, remaining 2,3,4 stitch respectively with one the
One filter module is connected.
First filter module is used to be filtered the signal for entering Hall detection unit and fidelity, comprising: first
Filter resistance 51, the second filter resistance 52 and the first filter capacitor 53.The first end of first filter resistance 51 connects five needles
Connector 56, second end connect 74AHC14D chip 57；The first end of second filter resistance 52 accesses 5V voltage, second end
Connect the first end of the first filter resistance 51；The second of anode the first filter resistance 52 of connection of first filter capacitor 53
End, cathode ground connection.
By the first filter module, treated that signal enters inside 74AHC14D chip 57, the 74AHC14D chip 57
For NOT gate shaping IC, shaping can be carried out to the slow impulse wave that Hall sensor issues, be allowed to be formed and be suitable for digital circuit
Rectangular pulse.
Specifically, the 1 of 74AHC14D chip 57,3,5 stitch receive the signal from the first filter module, above-mentioned signal from
2,4,6 stitch are sent in the second filter module.7,9,11,13 stitch of chip are grounded, and 14 stitch access 3.3V voltage.This
Outside, the filter capacitor being grounded can be added in 14 stitch, reduces influence of the 3.3V voltage to shaping pulse.
Second filter module is for being filtered the signal after shaping, comprising: 54 He of third filter resistance
Second filter capacitor 55.The first end of the third filter resistance 54 connects 74AHC14D chip 57, and second end connects single-chip microcontroller
1；The second end of the anode connection third filter resistance 54 of second filter capacitor 55, cathode ground connection.
It can be sent to inside single-chip microcontroller 1 by the signal of the second filter module, 92,93,95 stitch of single-chip microcontroller 1 are for connecing
The signal from revolver motor is received, 23,24,25 stitch receive the signal from right wheel motor.
In addition, this control system further includes communication unit 6, the communication unit 6 for realizing single-chip microcontroller 1 and host computer it
Between signal communication.If Fig. 8 is the circuit connection diagram of communication unit 6, as shown, communication unit 6 includes protective module
With SP3232EEN chip 61.
The impact and interference that the protective module generates communication unit 6 for reducing signal, comprising: first inhibits two poles
Pipe 66, second inhibits diode 67, first that capacitor 64, second is inhibited to inhibit capacitor 65, the first protective resistance 62 and the second protection
Resistance 63.
Wherein, the first inhibition diode 66 and the second inhibition diode and 67 are Transient Suppression Diode, can communicated
When unit 6 is by reversed transient state high energy impact events, with 10-12The high impedance of two interpolars is become Low ESR by the speed of second-time, is inhaled
The surge power for receiving up to thousands of watts, avoids communication unit 6 because surge damages.
Described first inhibits the first end ground connection of diode 66, and second end connects the first end of the first protective resistance 62, the
13 stitch of the second end connection SP3232EEN chip 61 of one protective resistance 62, first inhibits the anode connection first of capacitor 64
The first end of protective resistance 62, cathode ground connection；Second inhibits the first end connection first of diode 67 to inhibit diode 66
First end, second end connect the first end of the second protective resistance 63, and the second end of the second protective resistance 63 connects SP3232EEN core
14 stitch of piece 61, second inhibits the first end of anode connection the second protection capacitor 34 of capacitor 65, cathode ground connection.
Conversion of the SP3232EEN chip 61 for realizing signal between RS232 and TTL format, 11 stitch connect
The signal of 78 stitch in single-chip microcontroller 1 is received, 12 stitch transmit signal to 79 stitch of single-chip microcontroller 1.In addition, SP3232EEN core
It is connected by capacitor between 4 stitch and 5 stitch of piece 61, between 1 stitch and 3 stitch, 2,6,12 stitch pass through one respectively
Capacitor carries out ground protection, and the 3.3V power supply of supply chip operation is also accessed on 16 stitch.
Effect description is carried out to above scheme below:
The control system for non-brush direct currunt electromotors for present embodiments providing a kind of coaxial two wheels robot drives MOS by pwm signal
Pipe alternate conduction and the rotation for realizing left and right turbin generator.In the driving circuit of motor, collected by single-phase sampling resistor each
The numerical value of phase current, the numerical value of bus current is collected by bus sampling resistor, and is detected to above-mentioned numerical value, when bus electricity
This system can cut off the rotation of motor in time when stream is more than predetermined value, avoid motor from generating overcurrent and burn.
The present embodiment can receive the signal of motor Hall sensor by Hall detection unit, and real-time monitoring motor turns
Emotionally condition, and the PWM waveform for being suitble to motor work is provided in time, so that the movement of robot is more smooth.
The communication unit of the present embodiment can eliminate the influence of signal surge, Guarantee control system and upper position communication process
It is unobstructed.
Power supply unit in the present embodiment can convert 15V, 5V, 3.3V for the supply voltage of 24V, without adding more rule
Lattice power supply, has simplified line construction.
First operational amplifier described in the present embodiment, second operational amplifier and third operational amplifier can be selected
LM324 type operational amplifier；First inhibits diode and second to inhibit diode that the inhibition of P6SMB16CAT3G type transient state can be selected
Diode；IRF540N type metal-oxide-semiconductor can be selected in upper bridge metal-oxide-semiconductor and lower bridge arm metal-oxide-semiconductor；Remaining chip or single-chip microcontroller can be according to upper
Literary content finds corresponding product, and the internal structure of said elements has been big well known, therefore is no longer repeated in the application.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot, it is characterised in that: including STM32F103VCT6 single-chip microcontroller
(1), for exporting tri- phase control signal of PWM；
Driving unit (2), for receiving the tri- phase control signal of PWM of single-chip microcontroller (1) and DC brushless motor driven to rotate, including
The identical revolver driving circuit of structure and right wheel driving circuit；
The revolver driving circuit includes: U phase driving circuit, and input terminal connects 67 and 52 stitch of single-chip microcontroller (1), for controlling
The on and off of two metal-oxide-semiconductors in revolver motor U phase processed；V phase driving circuit, input terminal connect 68 Hes of single-chip microcontroller (1)
53 stitch, for controlling the on and off of two metal-oxide-semiconductors in revolver motor V phase；W phase driving circuit, input terminal connection are single
69 and 54 stitch of piece machine (1), for controlling the on and off of two metal-oxide-semiconductors in revolver motor W phase；
The right wheel driving circuit includes: U phase driving circuit, and input terminal connects 63 and 32 stitch of single-chip microcontroller (1), for controlling
The on and off of two metal-oxide-semiconductors in right wheel motor U phase processed；V phase driving circuit, input terminal connect 64 Hes of single-chip microcontroller (1)
35 stitch, for controlling the on and off of two metal-oxide-semiconductors in right wheel motor V phase；W phase driving circuit, input terminal connection are single
65 and 36 stitch of piece machine (1), for controlling the on and off of two metal-oxide-semiconductors in right wheel motor W phase；
Sample detecting unit (3), including sample circuit and contrast circuit, the sample circuit is for acquiring electric machine phase current and mother
Line current signal, and fidelity processing is carried out to it, including phase current circuit and bus current circuit；
The input terminal of the phase current circuit connects the single-phase sampling resistor (21) of each phase driving circuit of motor, wherein revolver motor
The output end of U, V, W phase phase current circuit be separately connected 15,16,17 stitch of single-chip microcontroller (1), U, V, W phase of right wheel motor
The output end of phase current circuit is separately connected 26,29,30 stitch of single-chip microcontroller (1)；The input terminal of the bus current circuit connects
Bus sampling resistor (22) are connect, wherein 18 stitch of bus current circuit output end connection single-chip microcontroller (1) of revolver motor, right wheel
31 stitch of bus current circuit output end connection single-chip microcontroller (1) of motor；
The contrast circuit is used to compare the output signal of bus current circuit with preset value, wherein revolver contrast circuit
Input terminal connection single-chip microcontroller (1) 18 stitch, output end connect single-chip microcontroller (1) 51 stitch, the input of right wheel contrast circuit
31 stitch of end connection single-chip microcontroller (1), output end connect 91 stitch of single-chip microcontroller (1)；
Power supply unit (4) is used for carrying out each unit in transformation and feed system to power supply.
2. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 1, it is characterised in that described
Driving circuit includes:
IR2101S analog line driver (27), for being driven to the three-phase metal-oxide-semiconductor on motor, 2,3 stitch of driver (27)
Pwm signal is received, 7,6 stitch are separately connected the grid of the metal-oxide-semiconductor of bridge arm and lower bridge arm；
Bootstrap module, for promoting the voltage of upper bridge arm metal-oxide-semiconductor (25), including booster diode (23) and boost capacitor
(24), the anode connection supply voltage of the booster diode (23), cathode connect 8 stitch of driver (27), the liter
The cathode of anode connection booster diode (23) of voltage capacitance (24), the cathode of boost capacitor (24) connect upper bridge arm metal-oxide-semiconductor
(25) source electrode.
3. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 2, it is characterised in that: described
The first end of single-phase sampling resistor (21) is connected with the drain electrode of lower bridge arm metal-oxide-semiconductor (26), and second end connects bus sampling resistor
(22) first end, the second end ground connection of the bus sampling resistor (22).
4. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 1, it is characterised in that: described
Sample detecting module further includes reference circuit, and the reference circuit is for generating reference voltage, and the reference voltage is for supplying
Sample circuit uses.
5. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 4, it is characterised in that: described
Reference circuit includes the first operational amplifier (35), the first divider resistance (31), the second divider resistance (32), the first protection capacitor
(33) and second protects capacitor (34)；
The first end of first divider resistance (31) connects supply voltage, the first end of second end and the second divider resistance (32)
It is connected, the second end ground connection of second divider resistance (32)；The positive input of first operational amplifier (35) and
The second end of one divider resistance (31) is connected, and reverse input end is connected with itself output end, output end output reference voltage；
The anode of first protection capacitor (33) is connected with the positive power source terminal of the first operational amplifier (35), cathode ground connection；Described
The negative power end of one operational amplifier (35) is grounded；The anode of second protection capacitor (34) is defeated with the first operational amplifier (35)
Outlet is connected, cathode ground connection.
6. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 3, it is characterised in that: described
Sample circuit includes second operational amplifier (315), first resistor (36), second resistance (37), 3rd resistor (38), the 4th electricity
Hinder (39), the 5th resistance (310), the 6th resistance (311), the 7th resistance (312), first capacitor (313) and the second capacitor
(314)；
The first end of the first resistor (36) is connected with single-phase sampling resistor (21), and second end connects the of second resistance (37)
One end；The positive input of second end connection second operational amplifier (315) of the second resistance (37)；The 3rd resistor
(38) second end of first end connection second resistance (37), second end connect the output end of the reference module, are used for sampling
Circuit imports reference voltage, and plays pressure stabilization function to reference voltage；Anode and first resistor (36) of the first capacitor (313)
Second end be connected, cathode is connected with the first end of the 4th resistance (39), for reducing signal interference；4th resistance (39)
Second end ground connection, for preventing sample circuit distorted signals；The 7th electricity of output connection of the second operational amplifier (315)
The first end of (312) is hindered, the second end of the 7th resistance (312) connects single-chip microcontroller (1)；Second operational amplifier (315) it is reversed
Output end connects the first end of the 6th resistance (311), and the second end of the 6th resistance (311) connects the first of the 7th resistance (312)
End；The first end of 5th resistance (310) is connected with the first end of the 4th resistance (39), and second end connects the 6th resistance
(311) first end；The second end of anode the 7th resistance (312) of connection of second capacitor (314), cathode ground connection.
7. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 6, it is characterised in that: described
Contrast circuit includes third operational amplifier (326), the 8th resistance (316), the 9th resistance (317), the tenth resistance (318),
11 resistance (319), twelfth resistor (320), third capacitor (321), the 4th capacitor (322) and the 5th capacitor (325)；
The output end of the first end connection bus sample circuit of 8th resistance (316), second end connect third operation amplifier
The reverse input end of device (326)；The first end of 9th resistance (317) connects supply voltage, and second end connects third operation
The positive input of amplifier (326)；The output end of the third operational amplifier (326) connects the of the tenth resistance (318)
The second end of one end, the tenth resistance (318) connects single-chip microcontroller (1)；The 9th electricity of first end connection of the eleventh resistor (319)
Hinder the second end of (317), second end ground connection；The second of anode the 8th resistance (316) of connection of the third capacitor (321)
End, cathode ground connection；The first end of the twelfth resistor (320) connects the second end of the tenth resistance (318), and second end connects
Connect supply voltage；The second end of anode the tenth resistance (318) of connection of 4th capacitor (322), cathode ground connection；Described
The positive power source terminal of anode connection third operational amplifier (326) of five capacitors (325), cathode ground connection, third operational amplifier
(326) negative power end ground connection.
8. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 1, it is characterised in that: this control
System processed further includes Hall detection unit (5), for receiving the signal of motor Hall sensor sending, and transmits the result to list
In piece machine (1), wherein the Hall detection unit (5) of revolver motor connects 92,93,95 stitch of single-chip microcontroller (1), right wheel motor
Hall detection unit (5) connects 23,24,25 stitch of single-chip microcontroller (1).
9. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 1, it is characterised in that: this control
System processed further includes communication unit (6), for realizing the signal communication of single-chip microcontroller (1) and host computer, signal output end connection
79 stitch of single-chip microcontroller (1), signal input part connect 78 stitch of single-chip microcontroller (1).
10. a kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot according to claim 1, it is characterised in that: institute
Stating power supply unit (4) includes the first conversion circuit, the second conversion circuit and third conversion circuit；
First conversion circuit is used to convert 15V supply voltage, including LM2596-ADJ chip for 24V supply voltage
(41), first diode (42), the second diode (43), the first storage capacitor (44), the second storage capacitor (45), third energy storage
Capacitor (46), the 4th storage capacitor (47), the first inductance (410), the first buffering capacitor (411) and the second buffering capacitor (412)；
The anode connection 24V operating voltage of the first diode (42), cathode connect 1 needle of LM2596-ADJ chip (41)
Foot；The anode of first storage capacitor (44) and the second storage capacitor (45) is connected with the anode of first diode (42),
Cathode is grounded；The anode of the third storage capacitor (46) and the 4th storage capacitor (47) is negative with first diode (42)
Extremely it is connected, cathode is grounded；The first end of the 2 stitch connection the first inductance (410) of the LM2596-ADJ chip (41), the
The second end of one inductance (410) exports 15V supply voltage；The cathode of second diode (43) connects the first inductance (410)
First end, cathode ground connection；The anode of first buffering capacitor (411) and the second buffering capacitor (412) is electric with first
The second end for feeling (410) is connected, and cathode is grounded；
Second conversion circuit is used to convert 5V supply voltage for 15V supply voltage, including LM2596-5 chip (414),
Third diode (415), the 5th storage capacitor (416), the 6th storage capacitor (417), the second inductance (419), the 4th buffering electricity
Hold (420) and the 5th buffering capacitor (421)；
1 stitch of the LM2596-5 chip (414) connects 15V supply voltage, and 2 stitch connect the first of the second inductance (419)
The second end at end, second inductance (419) exports 5V supply voltage；The cathode of the third diode (415) and the second electricity
The first end for feeling (419) is connected, plus earth；The anode of 4th buffering capacitor (420) and the 5th buffering capacitor (421)
It is connected with the second end of the second inductance (419), cathode is grounded；
The third conversion circuit is used to convert 3.3V supply voltage, including LM1117-3V3 chip for 5V supply voltage
(422), the 7th storage capacitor (423), the 8th storage capacitor (424), the 6th buffering capacitor (425) and the 7th buffering capacitor
(426)；
1 stitch of the LM1117-3V3 chip (422) connects 5V supply voltage, and 2 stitch export 3.3V supply voltage；Described
The anode of seven storage capacitors (423) and the 8th storage capacitor (424) is connected with 1 stitch of LM1117-3V3 chip (422),
Cathode is grounded；6th buffering capacitor (425) and the 7th buffering capacitor (426) it is positive with LM1117-3V3 chip
(422) 2 stitch are connected, and cathode is grounded.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109510172A (en) * | 2018-11-27 | 2019-03-22 | 珂伯特机器人（天津）有限公司 | A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510172A (en) * | 2018-11-27 | 2019-03-22 | 珂伯特机器人（天津）有限公司 | A kind of the control system for non-brush direct currunt electromotors of coaxial two wheels robot |
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Effective date of registration: 20191209 Address after: 300000 Tianjin city Xiqing District Yangliuqing town Liu Yilu No. 20 A District Patentee after: More than network technology (Tianjin) Co., Ltd. Address before: Yangliuqing town Liu Kou 300380 Tianjin District of Xiqing City Road and Jin Jing highway junction on the west side of Jingcheng Road Patentee before: Ke Ke Bert robot (Tianjin) Co., Ltd. |
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