CN107355162A - The control method and device that a kind of automobile power back door double-rod is synchronized with the movement - Google Patents

The control method and device that a kind of automobile power back door double-rod is synchronized with the movement Download PDF

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Publication number
CN107355162A
CN107355162A CN201710422549.3A CN201710422549A CN107355162A CN 107355162 A CN107355162 A CN 107355162A CN 201710422549 A CN201710422549 A CN 201710422549A CN 107355162 A CN107355162 A CN 107355162A
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electric pole
driven
active
speed
motor
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周艳红
郑伟胜
吴珩
杨兆万
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Individual
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/60Power-operated mechanisms for wings using electrical actuators
    • E05F15/603Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/50Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53Type of wing
    • E05Y2900/546Tailboards, tailgates or sideboards opening upwards

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  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The invention discloses a kind of synchronous control method of automobile power back door double-rod and device.Methods described includes (1) active electric pole speed control:Selection one electric pushrod is as active electric pole, the command speed obtained according to outside and active electric pole real time status information, controls the real-time rotating speed of its motor;(2) driven electric pole position synchronization control:Another electric pushrod is selected as driven electric pole, command speed, active electric pole real time status information and the driven electric pole real time status information obtained according to outside, controls the real-time rotating speed of its motor so that its real time position is synchronous with active electric pole.Described device includes active electric pole pi controller, driven electric pole pi controller, position proportional integral-derivative controller, active electric pole motor, driven electric pole motor, active electric pole integrator computing unit, driven electric pole integrator computing unit.The present invention can guarantee that the position that the automobile power back door moves between left and right electric pushrod during switch gate is synchronous.

Description

The control method and device that a kind of automobile power back door double-rod is synchronized with the movement
Technical field
The invention belongs to automobile intelligent electronic applications, are synchronized with the movement more particularly, to a kind of automobile power back door double-rod Control method and device.
Background technology
The automation of automobile tail gate switching process is very easy to the trip of people, the switch control experience of automobile tail gate Manual control switch's door, single pole automatic door arrive the evolutionary process of double-rod automatic door again.Single pole electric tail gate is long-term During use, due to tail-gate or so force unbalance during switch gate, the deformation of tail-gate can be caused, more serious meeting causes Tail-gate can not close completely to be closed tightly.The appearance of double-rod structure electric tail gate is exactly to solve tail-gate left and right sides in switching process The problem of force unbalance, and bigger driving force is provided simultaneously.But what is occurred therewith is then tail-gate or so electric pushrod Synchronous sex chromosome mosaicism, if the motion of electric pushrod is asynchronous, that can still cause the deformation of tail-gate during long-term use.
The control that electric tail gate double-rod is synchronized with the movement is related to two fundamental problems:1) control strategy is according to desired switch How door demand, control the motion of electric pushrod, so as to perform corresponding action;2) how control strategy ensures in switch gate During the motion of tail-gate or so electric pushrod synchronism so that the displacement at left and right sides of tail-gate is equal, prevent tail-gate because of a left side Right electric pushrod motion asynchronous and cause to deform.
The left and right electric pole of the automobile power back door of double-rod structure uses parallel control model mostly at present, i.e., will be same Control instruction is sent to left and right electric pushrod simultaneously, and left and right electric pushrod is then according to the fortune of the instruction complete independently itself received It is dynamic, there is no Collaborative Control between the bar of left and right.But the stressing conditions between the push rod of left and right are not fully identical, current controlling party Method can not be adjusted according to the stressing conditions of left and right push rod, and cause left and right electric pole to still have the nonsynchronous problem of motion, Long-term use can still cause tail-gate to deform.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of control of automobile power back door double-rod Method and device, its object is to by carrying out principal and subordinate's selection to double-rod, driven electric pole is kept in position and active all the time Electric pole is consistent, thus solves the control of existing tail-gate double-rod and terminates that left and right electric pole movement position is asynchronous, causes what tail-gate deformed Technical problem.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of automobile power back door double-rod synchronization Control method, comprise the following steps:
(1) active electric pole speed control:The electric pushrod of one of double-rod is selected to be obtained as active electric pole according to outside The command speed and active electric pole real time status information taken, control the real-time rotating speed of its motor;
(2) driven electric pole position synchronization control:Another electric pushrod in double-rod is selected as driven electric pole, to be obtained according to outside Command speed, active electric pole real time status information and the driven electric pole real time status information taken, control turning in real time for its motor Speed so that its real time position is synchronous with active electric pole.
Preferably, the control method of the automobile power back door, its described command speed is by electric tail gate controller system Speed planning device produce;The active electric pole real time status information includes the real-time rotating speed and active electric pole of active electric pole motor Real-time displacement;The driven electric pole real time status information includes real-time rotating speed and the real-time position of driven electric pole of driven electric pole motor Move.
Preferably, the control method of the automobile power back door, its active electric pole speed control and/or driven electricity Bar speed control uses closed-loop proportional-integral control strategy.
Preferably, the control method of the automobile power back door, its described active electric pole speed control use closed loop proportional Integration control strategy, it is specific as follows:
(1-1) gathers the encoder information of its motor of the active electric pole, obtains turning in real time for active electric pole motor Speed;
(1-2) using the real-time rotating speed of the active electric pole motor obtained in step (1-1) as negative velocity feedback information, with reality When the command speed that obtains make comparisons, obtain active electric pole speed deviation;
The active electric pole speed deviation that (1-3) obtains according to step (1-2), according to the active electric pole speed deviation Proportional integration and the directly proportional principle of renewal active rotating speed, it is determined that renewal active rotating speed;
(1-4) causes the real-time rotating speed of the active electric pole motor to meet renewal active rotating speed, and return to step (1-1) is followed Ring performs.
Preferably, the control method of the automobile power back door, the renewal active rotating speed of its active electric pole motor are pressed Calculated according to following method:
Wherein, Out1 be active electric pole motor renewal active rotating speed, es(t) it is the active electric pole speed deviation, Kp_sTo be the proportionality coefficient of proportional integration computing, T to the active electric pole velocity deviationi_sTo do time integral to velocity deviation The time coefficient of computing.
Preferably, the control method of the automobile power back door, its described driven electric pole speed control use closed loop proportional Integration control strategy, it is specific as follows:
It is specific as follows:
(2-1) gathers the coding information of driven its motor of electric pole, obtains the real-time rotating speed of driven electric pole;
(2-2) obtains using the real-time rotating speed of driven electric pole obtained in step (2-1) as negative velocity feedback information with real-time The command speed make comparisons, obtain driven electric pole speed deviation;
(2-3) obtain active electric pole positional information and driven electric pole relative position information, calculate main electric pole position with From the time diffusion operation result sum of the proportional integration and driven electric pole speed deviation of the difference of electric pole position, and according to it The principle amendment driven electric pole speed deviation directly proportional with to the driven electric pole speed deviation after renewal, after being updated Driven electric pole speed deviation;
Driven electric pole speed deviation after the renewal that (2-4) is obtained according to step (2-3), after according to the renewal Driven electric pole speed deviation the proportional integration principle directly proportional to updating driven rotating speed, it is determined that updating driven rotating speed;
(2-5) causes the real-time rotating speed of the driven electric pole motor to meet to update driven rotating speed, and return to step (2-1) is followed Ring performs.
Preferably, the control method of the automobile power back door, its described driven electric pole speed deviation is according to lower section Method calculates:
Wherein, up(t) it is the driven electric pole velocity deviation information after renewal, ep(t) it is active electric pole position and driven electric pole The difference of position, de (t) are driven electric pole speed deviation, Kp_pTo do scale operation to the driven electric pole speed deviation Proportionality coefficient, Ti_pTo be the time coefficient of time integral computing, T to the driven electric pole speed deviationd_pFor to described Driven electric pole speed deviation does the time coefficient of time diffusion computing.
Preferably, the control method of the automobile power back door, its described driven rotating speed of renewal calculate as follows:
Wherein, Out2 is to update driven rotating speed, er(t) it is driven electric pole speed deviation and the real-time rotating speed of driven electric pole Difference, Kp_sTo be the proportionality coefficient of scale operation, T to the driven electric pole speed deviationi_sFor to the driven electric pole speed Degree deviation does the time coefficient of time integral computing.
According to another aspect of the present invention, there is provided a kind of synchronous control device of automobile power back door double-rod, including: Active electric pole pi controller, driven electric pole pi controller, position proportional integral-derivative controller, active electric pole Motor, driven electric pole motor, active electric pole integrator computing unit, driven electric pole integrator computing unit;
The active electric pole pi controller, its input input the command speed, its feedback end and actively electricity Bar motor output end is connected, and its output end is connected with active electric pole input end of motor;
The active electric pole motor, its output end are also connected with active electric pole integrator computing unit;
The active electric pole integrator computing unit, its output end and position proportional integral-derivative controller first input end phase Even;
The position proportional integral-derivative controller, its first input end and the active electric pole integrator computing unit output end It is connected, its second input is connected with the driven electric pole integrator computing unit output end, and its output end and driven electric pole ratio are accumulated Sub-controller is connected;
The driven electric pole pi controller, its input and position proportional integral-derivative controller output end phase Even, its feedback end is connected with driven electric pole motor output end, and its output end is connected with driven electric pole input end of motor;
The driven electric pole motor, its output end are also connected with driven electric pole integrator computing unit;
The driven electric pole integrator computing unit, its output end and position proportional integral-derivative controller the second input phase Even.
Preferably, the synchronous control device of the automobile power back door double-rod, its described position proportional integral differential control Device, for according to active electric pole real time position and driven electric pole real time position, revision directive speed.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show Beneficial effect:
Coal addition position controls between the single pole velocity close-loop control of the electric pole of left and right two, ensure that automobile tail gate or so two The synchronism of side position motion.The control method and device that the automobile power back door double-rod of the present invention is synchronized with the movement, can guarantee that institute It is synchronous to state the position that automobile power back door moves between left and right electric pushrod during switch gate, prevents tail-gate long-term In switching process because of the asynchronous of left and right electric pole movement position and caused by tail-gate deformation generation.
Brief description of the drawings
Fig. 1 is the synchronous control method schematic flow sheet of automobile power back door double-rod provided by the invention;
Fig. 2 is the synchronous controling device structure diagram of automobile power back door double-rod provided by the invention;
Fig. 3 is the synchronous control method flow chart of automobile power back door double-rod provided in an embodiment of the present invention;
Fig. 4 is the left electric pole motor speed closed-loop proportional-integral controller architecture schematic diagram of embodiment 2;
Fig. 5 is Synchronization Control effect and the general control effect contrast figure of the embodiment of the present invention 2, and wherein Fig. 5 A are commonly to control When processed, automobile power back door double-rod position tracking result, when Fig. 5 B are that the method provided according to the present embodiment is controlled, automobile Electric tail gate double-rod position tracking result.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below Conflict can is not formed each other to be mutually combined.
The synchronous control method of automobile power back door double-rod provided by the invention, as shown in figure 1, comprising the following steps:
(1) active electric pole velocity close-loop control:The electric pushrod of one of double-rod is selected as active electric pole, according to outer The command speed and active electric pole real time status information that portion obtains, by the proportional plus integral control strategy of closed loop, control its electricity The real-time rotating speed of machine.
The command speed is produced by the speed planning device of electric tail gate controller system;The active electric pole real-time status Information includes the real-time rotating speed and active electric pole real-time displacement of active electric pole motor.
It is specific as follows:
(1-1) gathers the encoder information of its motor of the active electric pole, obtains turning in real time for active electric pole motor Speed;
(1-2) using the real-time rotating speed of the active electric pole motor obtained in step (1-1) as negative velocity feedback information, with reality When the command speed that obtains make comparisons, obtain active electric pole speed deviation;
The active electric pole speed deviation that (1-3) obtains according to step (1-2), according to the active electric pole speed deviation Proportional integration and the directly proportional principle of renewal active rotating speed, it is determined that renewal active rotating speed;
(1-4) causes the real-time rotating speed of the active electric pole motor to meet renewal active rotating speed, and return to step (1-1) is followed Ring performs.
(2) driven electric pole position synchronization control:Another electric pushrod in double-rod is selected as driven electric pole, to be obtained according to outside Command speed, active electric pole real time status information and the driven electric pole real time status information taken, passes through the proportional integration control of closed loop System strategy, control the real-time rotating speed of its motor so that its real time position is synchronous with active electric pole.
The command speed is produced by the speed planning device of electric tail gate controller system;The active electric pole real-time status Information includes the real-time rotating speed of active electric pole motor and driven electric pole real-time displacement;The driven electric pole real time status information includes The real-time rotating speed of driven electric pole motor and driven electric pole real-time displacement.
It is specific as follows:
(2-1) gathers the coding information of driven its motor of electric pole, obtains the real-time rotating speed of driven electric pole;
(2-2) obtains using the real-time rotating speed of driven electric pole obtained in step (2-1) as negative velocity feedback information with real-time The command speed make comparisons, obtain driven electric pole speed deviation;
(2-3) obtain active electric pole positional information and driven electric pole relative position information, calculate main electric pole position with From the time diffusion operation result sum of the proportional integration and driven electric pole speed deviation of the difference of electric pole position, and according to it The principle amendment driven electric pole speed deviation directly proportional with to the driven electric pole speed deviation after renewal, after being updated Driven electric pole speed deviation;
Driven electric pole speed deviation after the renewal that (2-4) is obtained according to step (2-3), after according to the renewal Driven electric pole speed deviation the proportional integration principle directly proportional to updating driven rotating speed, it is determined that updating driven rotating speed;
(2-5) causes the real-time rotating speed of the driven electric pole motor to meet to update driven rotating speed, and return to step (2-1) is followed Ring performs.
The synchronous control device of automobile power back door double-rod provided by the invention, including:Active electric pole proportional plus integral control Device, driven electric pole pi controller, position proportional integral-derivative controller, i.e. position PID controller, active electric pole electricity Machine, driven electric pole motor, active electric pole integrator computing unit, driven electric pole integrator computing unit;
The active electric pole pi controller, it is defeated for negative feedback closed loop control active electric pole motor, its input Enter command speed, its feedback end is connected with active electric pole motor output end, and its output end is connected with active electric pole input end of motor;
The active electric pole motor, for control active electric pole move, its output end also with active electric pole integrator computing unit It is connected;
The active electric pole integrator computing unit, for calculating active electric pole real time position, its output end and position PID control Device first input end is connected;
The position PID controller, for according to active electric pole real time position and driven electric pole real time position, revision directive Speed;Its first input end is connected with the active electric pole integrator computing unit output end, its second input and the driven electricity Bar integrator computing unit output end is connected, and its output end is connected with driven electric pole pi controller;
The driven electric pole pi controller, driven electric pole motor is controlled for negative feedback closed loop, its input with Position PID controller output end is connected, and its feedback end is connected with driven electric pole motor output end, its output end and driven electric pole electricity Machine input is connected;
The driven electric pole motor, for controlling driven electric pole to move, its output end also with driven electric pole integrator computing unit It is connected;
The driven electric pole integrator computing unit, for calculating from eastern inductance real time position, its output end and position PID control The input of device second is connected.
It is embodiment below:
Embodiment 1
A kind of synchronous control device of automobile power back door double-rod, as shown in Fig. 2 including:Active electric pole proportional integration control Device processed, driven electric pole pi controller, position PID controller, active electric pole motor, driven electric pole motor, active electric pole Integrator computing unit, driven electric pole integrator computing unit;
The active electric pole pi controller, it is defeated for negative feedback closed loop control active electric pole motor, its input Enter command speed, its feedback end is connected with active electric pole motor output end, and its output end is connected with active electric pole input end of motor;
The active electric pole motor, for control active electric pole move, its output end also with active electric pole integrator computing unit It is connected;
The active electric pole integrator computing unit, for calculating active electric pole real time position, its output end and position PID control Device first input end is connected;
The position PID controller, for according to active electric pole real time position and driven electric pole real time position, revision directive Speed;Its first input end is connected with the active electric pole integrator computing unit output end, its second input and the driven electricity Bar integrator computing unit output end is connected, and its output end is connected with driven electric pole pi controller;
The driven electric pole pi controller, driven electric pole motor is controlled for negative feedback closed loop, its input with Position PID controller output end is connected, and its feedback end is connected with driven electric pole motor output end, its output end and driven electric pole electricity Machine input is connected;
The driven electric pole motor, for controlling driven electric pole to move, its output end also with driven electric pole integrator computing unit It is connected;
The driven electric pole integrator computing unit, for calculating from eastern inductance real time position, its output end and position PID control The input of device second is connected.
Embodiment 2
A kind of synchronous control method of automobile power back door double-rod, the device provided by embodiment 1 is realized, such as Fig. 3 institutes Show, comprise the following steps that:
S1, collection external command speed, active electric pole motor, the real time status information of driven electric pole motor.
Specifically, external speed command information is produced by the speed planning device of electric tail gate controller system, the present embodiment Simply passively receive speed command caused by the speed planning device;The real-time status of active electric pole motor and driven electric pole motor Information includes the real-time displacement of rotating speed and electric pole when in fact, and the real-time rotating speed of motor is encoded by the Hall on each motor Device is obtained, and active electric pole and driven electric pole real-time displacement are integrated to obtain by its real-time rotating speed elapsed time respectively.
Further, in the present embodiment, external speed cue mark is V, active, the real-time rotating speed of driven electric pole motor Speed1 and Speed2 are respectively labeled as, active, driven electric pole real time position are labeled as Position1 and Position2.
S2, active electric pole velocity close-loop control:
The real-time rotary speed of active electric pole according to the external command speed gathered in step S1 and as feedback information Velocity close-loop control is carried out, makes the real-time speed of main electric pushrod tightly follow external speed to instruct with the Deviation Indices designed, Velocity close-loop control theory diagram is as shown in Figure 2.Further, in an embodiment of the present invention, choose based on left electric pushrod Dynamic electric pole, it is driven electric pole to choose right electric pushrod.External speed instruction V and active electric pole real-time speed Speed1 is done into difference Calculate, the input of the difference information of gained as active electric pole pi controller, main electric pole speed difference information by than The output Out1 of active electric pole motor is obtained after example integral controller computing, is sent to active electric pole, i.e., the electricity of left electric pole Drive circuit, to drive left electric pole motor movement.
Control flow is transferred to S3 steps.
S3, driven electric pole position synchronization control:
Velocity close-loop control is carried out according to the real-time speed feedback information of the driven electric pole motor gathered in step S1, The speed command for tightly following input with the Deviation Indices requirement designed from the real-time speed of electric pole can be made.
In step s3, the basic reference value of driven electric pole speed command is calculated.In an embodiment of the present invention, V, the real-time speed Speed2 with being obtained from electric pole motor is instructed to do difference, obtain driven electricity according to external speed first Bar speed deviation.To realize the position synchronization control of principal and subordinate's electric pole, in accordance with the following methods, with to the speed command ginseng from electric pole Value is examined to be modified.
Driven electric pole speed deviation input instruction amendment.
The amendment of driven electric pole speed command is based on the position deviation information between electric pole and main electric pole, this deviation information Computing is carried out by the position PID controller, obtains a speed correction, the correction value and driven electric pole speed deviation It is added, and the result after will add up finally enters command value as from electric pole speed closed loop.In an embodiment of the present invention, will Main electric pole position and input of the difference information (Position1-Position2) as position PID arithmetic from electric pole position, such as Shown in Fig. 2.Control flow is transferred to closed-loop control.
It is specific as follows to carrying out closed-loop control from the speed of electric pushrod:
According to the revised driven electric pole speed deviation, closed loop controller can make from the real-time speed of electric pole to set The Deviation Indices requirement of meter tightly follows the speed command of input.Further, in the present embodiment, driven electric pole velocity deviation Value obtains the output Out2 from electric pole motor after pi controller computing, is sent to the i.e. right electric pole of driven electric pole Motor-drive circuit, to drive right electric pole motor movement.
In the present embodiment, left electric pole motor speed closed-loop proportional-integral controller uses traditional control rate, such as Fig. 4 institutes Show, its calculation formula is as follows:
Wherein, Out1 be active electric pole motor renewal active rotating speed, es(t) it is the active electric pole speed deviation, Kp_sTo be the proportionality coefficient of proportional integration computing, T to the active electric pole velocity deviationi_sTo do time integral to velocity deviation The time coefficient of computing.
In an embodiment of the present invention, Kp_s、Ti_sThe determination of parameter is using the trial and error procedure commonly used in engineering, the ratio product Divide the determination process of parameter as follows:
1) T is madei_sFor 0, the rotary speed instruction V of left bar motor is arranged to 1500rpm, with 10 is that step-length is gradual since 0 Increase Kp_sValue, until a small amount of overshoot occurs in the real-time rotating speed of motor;
2) K is keptp_sValue it is constant, since 0.01 with 5 be step-length gradually increase Ti_sValue, until motor in real time turn It is fast final stable in the range of 1450rpm~1550rpm, by T nowi_sRecord;
3) K that will be adjusted in 1)p_sValue after 0.8 scale parameter final as pi controller is multiplied by, will 2) T adjusted ini_sThe integral parameter final as pi controller.
In an embodiment of the present invention, the control rate and ginseng of right electric pole motor institute operating speed closed-loop proportional-integral controller Number tuning process is consistent with the implementation process of left bar motor speed closed-loop proportional-integral controller.
Right electric pole motor speed closed-loop proportional-integral controller uses traditional control rate, and its calculation formula is as follows
Wherein, Out2 is to update driven rotating speed, er(t) it is driven electric pole speed deviation and the real-time rotating speed of driven electric pole Difference, Kp_sTo be the proportionality coefficient of scale operation, T to the driven electric pole speed deviationi_sFor to the driven electric pole speed Degree deviation does the time coefficient of time integral computing
In the present embodiment, between principal and subordinate's electric pole position deviation position PID controller, its control rate calculation formula It is as follows:
Wherein, up(t) it is the driven electric pole velocity deviation information after renewal, ep(t) it is active electric pole position and driven electric pole The difference of position, de (t) are driven electric pole speed deviation, Kp_pTo do scale operation to the driven electric pole speed deviation Proportionality coefficient, Ti_pTo be the time coefficient of time integral computing, T to the driven electric pole speed deviationd_pFor to described Driven electric pole speed deviation does the time coefficient of time diffusion computing.
In an embodiment of the present invention, Kp_p、Ti_pAnd Td_pThree parameters are adjusted using the trial and error procedure commonly used in engineering, The tuning process of the position deviation pid parameter is as follows:
1) T is madei_pAnd Td_pFor 0, the rotary speed instruction V of main electric pole motor is arranged to 1500rpm, with 10 is step since 0 Long gradually increase Kp_pValue, and in real time record principal and subordinate's electric pole positional information.When the real time position from electric pole is relative to main electric pole When there is a small amount of overshoot, then K is completedp_pParameter is adjusted;
2) K is keptp_pValue it is constant, since 0.01 with 1 be step-length gradually increase Ti_pValue, and in real time record principal and subordinate electricity The positional information of bar, when the position deviation of principal and subordinate's electric pole is stable when within 5 motor encoder pulses, the Ti_pParameter is whole Surely finish, by T nowi_pRecord;
3) K is keptp_pAnd Ti_pValue it is constant, T is gradually increased with 0.02 step-length since 0d_pValue, and record in real time The positional information of principal and subordinate's electric pole is to position deviation stable when there is first time overshoot relative to main electric pole position from electric pole position When time minimum and overshoot minimum, Td_pParameter adjusts completion.
4) K that will have been adjusted in 1) stepp_pIt is multiplied by the T adjusted in 0.8,2) stepi_pAnd 3) adjust in step Td_pFinal argument of the parameter as the position PID controller.
The control control effect test of present example is carried out in the electric tail gate of certain type SUV automobiles.For tail-gate electricity The dynamic process opened, for the first time test are independently controlled respectively for left and right electric pole, and what the left and right electric pole received is same Speed command, the tracking to speed command is completed by respective velocity close-loop control respectively.In this time test, tail-gate is controlled out Open at 2/3rds of maximum opening, the positional information of the left and right electric pole is as shown in Figure 5A.Second of test then adds this The described position Synchronous motion control method of invention, real-time tracking is carried out to the position of main electric pole from electric pole.In this time test, tail Door is opened at maximum allowable angle by control, and the positional information of left and right electric pole is as shown in Figure 5 B.As seen from Figure 5, if Deviation be present without the position between position synchronization control, tail-gate or so electric pole between the left and right electric pushrod of tail-gate, and should Deviation is constantly accumulated with the increase of tail-gate opening angle, can be caused two force unbalances of tail-gate, must if things go on like this be made Into the deformation of tail-gate.And when performing position synchronization control of the present invention to left and right electric pole, even if tail-gate is opened to most Big aperture, the final position deviation between the bar of left and right still meet design requirement, avoid tail-gate because left and right bar position is different Step causes the situation of deformation to occur, and indicates the validity and practicality of the method for the invention.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included Within protection scope of the present invention.

Claims (10)

1. the synchronous control method of a kind of automobile power back door double-rod, it is characterised in that comprise the following steps:
(1) active electric pole speed control:The electric pushrod of one of double-rod is selected to be obtained as active electric pole according to outside Command speed and active electric pole real time status information, control the real-time rotating speed of its motor;
(2) driven electric pole position synchronization control:Another electric pushrod in double-rod is selected as driven electric pole, to be obtained according to outside Command speed, active electric pole real time status information and driven electric pole real time status information, control the real-time rotating speed of its motor, make It is synchronous with active electric pole to obtain its real time position.
2. the control method of automobile power back door as claimed in claim 1, it is characterised in that the command speed is by electric tail gate The speed planning device of controller system produces;The active electric pole real time status information includes the real-time rotating speed of active electric pole motor With active electric pole real-time displacement;The driven electric pole real time status information includes the real-time rotating speed of driven electric pole motor and driven electricity Bar real-time displacement.
3. the synchronous control method of automobile power back door double-rod as claimed in claim 2, it is characterised in that the active electric pole speed Degree control and/or driven electric pole speed control use closed-loop proportional-integral control strategy.
4. the synchronous control method of automobile power back door double-rod as claimed in claim 3, it is characterised in that the active electric pole Speed control uses closed-loop proportional-integral control strategy, specific as follows:
(1-1) gathers the encoder information of its motor of the active electric pole, obtains the real-time rotating speed of active electric pole motor;
(1-2) using the real-time rotating speed of the active electric pole motor obtained in step (1-1) as negative velocity feedback information, with obtaining in real time The command speed taken is made comparisons, and obtains active electric pole speed deviation;
The active electric pole speed deviation that (1-3) obtains according to step (1-2), according to the ratio of the active electric pole speed deviation The example integration principle directly proportional to renewal active rotating speed, it is determined that renewal active rotating speed;
(1-4) causes the real-time rotating speed of the active electric pole motor to meet renewal active rotating speed, and return to step (1-1) circulation is held OK.
5. the synchronous control method of automobile power back door double-rod as claimed in claim 4, it is characterised in that the active electric pole The renewal active rotating speed of motor calculates as follows:
Wherein, Out1 be active electric pole motor renewal active rotating speed, es(t) it is the active electric pole speed deviation, Kp_sFor The proportionality coefficient of proportional integration computing, T are to the active electric pole velocity deviationi_sTo do time integral computing to velocity deviation Time coefficient.
6. the synchronous control method of automobile power back door double-rod as claimed in claim 3, it is characterised in that the driven electric pole Speed control uses closed-loop proportional-integral control strategy, specific as follows:
It is specific as follows:
(2-1) gathers the coding information of driven its motor of electric pole, obtains the real-time rotating speed of driven electric pole;
(2-2) using the real-time rotating speed of driven electric pole obtained in step (2-1) as negative velocity feedback information, with the institute obtained in real time State command speed to make comparisons, obtain driven electric pole speed deviation;
(2-3) obtains the positional information of active electric pole and the relative position information of driven electric pole, calculate main electric pole position with from electricity The time diffusion operation result sum of the proportional integration of the difference of bar position and driven electric pole speed deviation, and according to itself and with The directly proportional driven electric pole speed deviation of principle amendment of driven electric pole speed deviation after renewal, it is driven after being updated Electric pole speed deviation;
Driven electric pole speed deviation after the renewal that (2-4) is obtained according to step (2-3), according to according to after the renewal from The proportional integration of the dynamic electric pole speed deviation principle directly proportional to updating driven rotating speed, it is determined that updating driven rotating speed;
(2-5) causes the real-time rotating speed of the driven electric pole motor to meet to update driven rotating speed, and return to step (2-1) circulation is held OK.
7. the synchronous control method of automobile power back door double-rod as claimed in claim 6, it is characterised in that the driven electric pole Speed deviation calculates in accordance with the following methods:
Wherein, up(t) it is the driven electric pole velocity deviation information after renewal, ep(t) it is active electric pole position and driven electric pole position Difference, de (t) is driven electric pole speed deviation, Kp_pTo do the ratio of scale operation to the driven electric pole speed deviation Example coefficient, Ti_pTo be the time coefficient of time integral computing, T to the driven electric pole speed deviationd_pFor to described driven Electric pole speed deviation does the time coefficient of time diffusion computing.
8. the synchronous control method of automobile power back door double-rod as claimed in claim 6, it is characterised in that the renewal is driven Rotating speed calculates as follows:
Wherein, Out2 is to update driven rotating speed, er(t) it is the difference of driven electric pole speed deviation and the real-time rotating speed of driven electric pole, Kp_sTo be the proportionality coefficient of scale operation, T to the driven electric pole speed deviationi_sFor to the driven electric pole velocity deviation Value does the time coefficient of time integral computing.
A kind of 9. synchronous control device of automobile power back door double-rod, it is characterised in that including:Active electric pole proportional plus integral control Device, driven electric pole pi controller, position proportional integral-derivative controller, active electric pole motor, driven electric pole motor, master Dynamic electric pole integrator computing unit, driven electric pole integrator computing unit;
The active electric pole pi controller, its input input the command speed, its feedback end and active electric pole electricity Machine output end is connected, and its output end is connected with active electric pole input end of motor;
The active electric pole motor, its output end are also connected with active electric pole integrator computing unit;
The active electric pole integrator computing unit, its output end are connected with position proportional integral-derivative controller first input end;
The position proportional integral-derivative controller, its first input end and the active electric pole integrator computing unit output end phase Even, its second input is connected with the driven electric pole integrator computing unit output end, its output end and driven electric pole proportional integration Controller is connected;
The driven electric pole pi controller, its input are connected with position proportional integral-derivative controller output end, its Feedback end is connected with driven electric pole motor output end, and its output end is connected with driven electric pole input end of motor;
The driven electric pole motor, its output end are also connected with driven electric pole integrator computing unit;
The driven electric pole integrator computing unit, its output end are connected with the input of position proportional integral-derivative controller second.
10. the synchronous control device of automobile power back door double-rod as claimed in claim 9, it is characterised in that the position ratio Example integral-derivative controller, for according to active electric pole real time position and driven electric pole real time position, revision directive speed.
CN201710422549.3A 2017-06-07 2017-06-07 The control method and device that a kind of automobile power back door double-rod is synchronized with the movement Pending CN107355162A (en)

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Application publication date: 20171117