JP4794733B2 - Crank shift control device for automatic transmission - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention automatically shifts a manual transmission by an actuator according to an H-type shift pattern consisting of a linear shift in which the shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on different parallel lines. The present invention relates to an automatic transmission.
[0002]
[Prior art]
In the conventional manual transmission, from the viewpoint of operability, the guide of the H type shift pattern is chamfered to the H type guide portion G when shifting from the second (2nd) to the third (3rd) as shown in FIG. M is applied, and the driver performs a shift operation along the chamfer M of the guide portion G.
[0003]
There has been developed an automatic transmission that automatically shifts by attaching an actuator (Act) to a conventional manual transmission (MT) and automating a shift operation.
[0004]
However, a general manual transmission has an H-shaped shift pattern including a linear shift in which the shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on different parallel lines. Therefore, the conventional automatic transmission has a configuration in which a control system is added to an H-type shift pattern manual transmission.
[0005]
[Problems to be solved by the invention]
In the above-described conventional manual transmission, the driver himself performs a shift operation along the guide portion G on which the chamfer M is given when shifting from the second (2nd) to the third (3rd) as shown in FIG. Had to do.
[0006]
Further, the conventional automatic transmission has a problem that the neutral range Y shown in FIG. 1 is as narrow as 1 mm or less and it is difficult to operate the shift lever diagonally.
[0007]
Further, there is dimensional variation, and in order to establish this crank shift in a controlled manner, it is necessary to perform an operation for the worst dimension. The worst here refers to the thing with the narrowest possible range. In this state, a long time was required for the crank shift, and no performance improvement was expected.
[0008]
Therefore, the present inventor has used a manual transmission by an actuator in accordance with an H-type shift pattern consisting of a linear shift in which the shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on different parallel lines. In an automatic transmission that automatically shifts, the trajectory of the movement of an intermediate shift lever that shifts from one parallel line to the other parallel line of the H-type shift pattern in the crank shift is controlled to be oblique. As a result of further research and development focusing on the technical idea of the invention, this book achieves the purpose of eliminating the driver's own shift operation, shortening the shift operation time in automatic gear shifting, and improving performance. The invention has been reached.
[0009]
[Means for Solving the Problems]
A crank shift control device in an automatic transmission according to the present invention (first invention according to claim 1) is:
An automatic transmission that automatically shifts a manual transmission by an actuator according to an H-type shift pattern comprising a linear shift in which the shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on different parallel lines In
Based on the positional relationship between the current position of the shift lever and the inflection point, a shift and select stroke target is set to change from one parallel line of the H-type shift pattern to the other parallel line in the crank shift. The movement locus of the intermediate shift lever to be moved is controlled to be inclined without contacting the gate .
[0010]
A crank shift control device in an automatic transmission according to the present invention (the second invention according to claim 2),
In the first invention,
The locus of movement of the intermediate shift lever is a polygonal line passing through four inflection points.
[0011]
A crank shift control device in an automatic transmission according to the present invention (the third invention according to claim 3),
In the second invention,
The first and fourth inflection points of the four inflection points are points on the one parallel line and the other parallel line.
[0012]
The crank shift control device in the automatic transmission according to the present invention (the fourth invention described in claim 4) is:
In the third invention,
The second inflection point of the four inflection points is a point close to the one parallel line, and the third inflection point of the four inflection points is a point close to the other parallel line It is what is.
[0013]
A crank shift control device in an automatic transmission according to the present invention (the fifth invention according to claim 5),
In the fourth invention,
The four inflection points are stored in advance in the memory of the control device.
[0014]
A crank shift control device in an automatic transmission according to the present invention (sixth invention described in claim 6) is:
In the fifth invention,
The positions of the four inflection points are detected and controlled so as to pass through the detected positions of the four inflection points.
[0015]
A crank shift control device in an automatic transmission according to the present invention (seventh invention according to claim 7) is:
In the sixth invention,
The shift lever is controlled without a response delay by controlling the actuator in consideration of the response delay of the actuator.
[0016]
Operation and effect of the invention
The crank shift control device in the automatic transmission according to the first aspect of the present invention has the crank shift control device by setting shift and select stroke targets based on the positional relationship between the current position of the shift lever and the inflection point. Since the trajectory of the movement of the intermediate shift lever that shifts from one parallel line to the other parallel line of the H-shaped shift pattern is controlled to be slanted without contacting the gate , the driver's own shift operation The shift operation time in the automatic shift is shortened , and the crank shift control can be performed at the highest speed without contacting the gate during the crank shift .
[0017]
In the crank shift control device in the automatic transmission of the second invention having the above-described configuration, in the first invention, since the locus of the movement of the intermediate shift lever is a polygonal line passing through four inflection points, There is an effect that the shift operation time in the automatic shift can be shortened and the performance can be improved.
[0018]
In the crank shift control device for an automatic transmission according to the third aspect of the present invention, the first and fourth inflection points of the four inflection points are the one parallel line and the other. Therefore, the transition from one parallel line of the H-shaped shift pattern to the other parallel line can be performed reliably along the chamfered guide portion. Play.
[0019]
In the crank shift control device for an automatic transmission according to the fourth aspect of the present invention, the second inflection point of the four inflection points is a point close to the one parallel line. Since the third inflection point of the four inflection points is a point close to the other parallel line, there is an effect that the transition from one chamfering to the other chamfering of the guide portion is surely and smoothly performed. Play.
[0020]
In the crank shift control device in the automatic transmission of the fifth invention having the above-described configuration, in the fourth invention, the four inflection points are stored in advance in the memory of the control device. There is an effect that a shift operation corresponding to the four inflection points stored in advance is made possible.
[0021]
In the crank shift control device for an automatic transmission according to the sixth aspect of the present invention, the position of the four inflection points is detected in the fifth aspect, and the positions of the detected four inflection points are determined. Since it is controlled to pass, there is an effect that it is possible to perform control so that the detected positions of the four inflection points are surely passed.
[0022]
In the crank shift control device for an automatic transmission according to the seventh aspect of the present invention, the actuator is controlled in consideration of the response delay of the actuator in the sixth aspect of the invention, so that the shift lever is controlled without a response delay. The effect that it is done.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0024]
(First embodiment)
As shown in FIGS. 1 to 7, the crank shift control device in the automatic transmission according to the first embodiment is on parallel lines 31, 32 different from the linear shift 33 in which the shift lever 6 moves linearly on the same line. In the automatic transmission 2 that automatically shifts the manual transmission 1 by an actuator in accordance with an H-type shift pattern comprising a crank shift 34 in which the shift lever 6 moves in a crank shape, the H-type shift pattern 3 of the crank shift 34 The trajectory of the movement of the intermediate shift lever 6 moving from one parallel line 31 to the other parallel line 32 is controlled to be inclined in the form of a broken line passing through the four inflection points A, B, C, and D. Is.
[0025]
As shown in FIG. 6, the automatic transmission 2 according to the first embodiment is manually operated to change the rotation of the input shaft connected to the output shaft of the engine (or motor) 3 with a plurality of gears and to rotate and output from the output shaft. The transmission 1 is intended.
[0026]
The automatic transmission 2 according to the first embodiment includes a clutch actuator 41 that controls the clutch of the manual transmission 1 described above, a shift actuator 42 that controls a shift shift operation, and a select actuator 43 that controls a select operation. It has.
[0027]
The actuator includes a mechanism for automatically operating the structure of a conventional MT and clutch, and a power source thereof, regardless of hydraulic pressure, pneumatic pressure, or electricity (such as a motor).
[0028]
Further, the automatic transmission 2 according to the first embodiment includes an ECU that is a control device 5 that controls the clutch actuator 41, the shift actuator 42, and the select actuator 43.
[0029]
The shift lever 6 is configured to move along an H-shaped guide 600 as shown in FIG. 1, and the second speed (2nd) to the third speed (3rd) and the fourth speed (4th) to the fifth speed of the guide. Inclined chamfered portions 601 and 602 are provided on the guide shifted to the speed (5th).
[0030]
That is, in the first embodiment, the shift lever 6 linearly moves on the same lines 31 and 32 according to the guide 600, and the shift lever 6 is cranked on different parallel lines 31 and 32. It basically follows an H-shaped shift pattern consisting of a moving crank shift 34, and allows the actuators 42, 43 to allow a partially deformed automatic shift along the chamfered portion 601 of the shift lever 6. It is configured.
[0031]
Therefore, the four inflection points A, B, C, and D are subjected to an automatic shift in which the shift lever 6 is partially deformed along the H-shaped guide 600 in which the chamfered portion 601 is partially formed. Sometimes the locus of the shift lever 6 is inflected (corresponding to both end positions of each chamfered portion 601), and the outer walls of the shift lever 6 are respectively connected to the guide 600 as shown in FIG. There are two coordinates: a coordinate of a contact point that contacts both end positions of the chamfered portions 601 and 602 and a position (coordinate) of the axis of the shift lever 6 that contacts the contact point.
[0032]
The control device 5 includes a clutch sensor 61 that detects a clutch position or load, a shift sensor 62 that detects a shift position or load, a select sensor 63 that detects a select position or load, and the manual transmission 1. An input shaft sensor 64 for detecting the rotational speed of the input shaft, an output shaft sensor 65 for detecting the rotational speed of the output shaft of the manual transmission 1, a sensor capable of recognizing the will of the driver, and a shift lever 6 as switches. A shift lever sensor and a steering switch 66, an accelerator pedal sensor, and a brake pedal sensor 67 are connected to detect the position of the vehicle, and a control signal is output to the actuator based on information from the sensors.
[0033]
A crank shift control procedure in the automatic transmission of the present embodiment stored in advance in a ROM, which is a memory of the ECU constituting the control device 5, will be described below with reference to FIGS.
[0034]
In step 201 after starting in FIG. 7, the target in the shift (Y) direction is set to Y1 which is the coordinate of the neutral line in the shift direction, and the target in the select (X) direction is the first inflection point select. The direction coordinate xa is set.
[0035]
In step 202, it is determined whether the difference between the current position Y in the shift direction of the shift actuator 42 and the coordinate ya in the shift direction of the first inflection point is smaller than a reference value Z close to zero.
[0036]
When it is determined in step 202 that the difference between the current position Y in the shift direction of the shift actuator 42 and the coordinate ya in the shift direction of the first inflection point is smaller than the reference value Z close to 0, in step 203 The target in the shift (Y) direction is set to Y1, and the target in the select (X) direction is set to the coordinate xb in the select direction of the second inflection point.
[0037]
In step 204, it is determined whether or not the difference between the current position Y in the shift direction of the shift actuator 42 and the coordinate yb in the shift direction of the second inflection point is smaller than a reference value Z close to zero.
[0038]
When it is determined in step 204 that the difference between the current position Y in the shift direction of the shift actuator 42 and the coordinate yb in the shift direction of the second inflection point is smaller than the reference value Z close to 0, in step 205 The target in the shift (Y) direction is set to Y1, and the target in the select (X) direction is set to the coordinate X2 (on the other parallel line 32) which is the final target coordinate.
[0039]
In step 206, it is determined whether or not the difference between the current position Y in the shift direction of the shift actuator 42 and the coordinate yc in the shift direction of the third inflection point is smaller than a reference value Z close to zero.
[0040]
If it is determined in step 206 that the difference between the current position X in the select direction of the select actuator 43 and the coordinate xc in the select direction of the third inflection point is smaller than the reference value Z close to 0, in step 207 The target in the shift (Y) direction is set to the coordinate yd in the shift direction of the fourth inflection point, and the target in the select (X) direction is the coordinate X2 (on the other parallel line 32) as the final target coordinate. Set to
[0041]
In step 208, it is determined whether or not the difference between the current position X in the select direction of the select actuator 43 and the coordinate xd in the select direction of the fourth inflection point is smaller than a reference value Z close to zero.
[0042]
When it is determined in step 208 whether the difference between the current position X in the select direction of the select actuator 43 and the coordinate xd in the select direction of the fourth inflection point is smaller than a reference value Z close to 0, step 209 is performed. The target in the shift (Y) direction is set to the coordinate Y2 that is the final target, and the target in the select (X) direction is set to the coordinate X2 that is the final target coordinate (on the other parallel line 32).
[0043]
Further, a ROM which is a memory of the ECU constituting the control device 5 has first and fourth inflection points A of the four inflection points which are points on the one parallel line and the other parallel line, D and the second inflection point B of the four inflection points are points close to the one parallel line 31, and the third inflection point C of the four inflection points is the other Each of the coordinates (xa, ya) (xb, yb) (xc, yc) (xd,) shown in FIG. 4 is a point close to the parallel line 32 and considering the positions and shapes of the chamfers 601 and 602 of the guide portion 600. yd) is stored in advance, and the stored positions of the four inflection points are detected and controlled to pass through the detected positions of the four inflection points. .
[0044]
In the crank shift control apparatus in the automatic transmission according to the first embodiment described above, the positions of the four inflection points A, B, C, and D shown in FIG. When set, the crank shift is accurately performed by converging the stroke toward the target by feedback control.
[0045]
In the first embodiment, actuator (Act) drive is performed as indicated by the arrows shown in FIG. That is, the shift lever is pulled out by the shift actuator 42 that controls the shift shift operation while being pressed in the select direction by the select actuator 43 that controls the select operation.
[0046]
The shift and select inflection points A, B, C, and D are called and detected from the coordinate data of points A, B, C, and D stored in the ROM of the ECU 5, and the current position of the shift lever 6 is detected. The shift lever 6 is controlled so as to pass through the inflection points A, B, C, and D by being detected and feedback-controlled by the shift lever sensor 66 from time to time.
[0047]
In the first embodiment, as shown in FIGS. 3A and 3B and FIGS. 8A and 8B, the shift and select stroke targets are changed at the respective timings.
[0048]
However, in the first embodiment, PID control of the actual stroke with respect to the stroke target is performed.
[0049]
In the crank shift control apparatus in the automatic transmission according to the first embodiment described above, the locus of movement of the intermediate shift lever that shifts from one parallel line to the other parallel line of the H-type shift pattern in the crank shift is described. As shown in FIG. 5, it is controlled to be inclined in a polygonal line passing through four inflection points, so that the driver's own shift operation is unnecessary and the shift operation time in automatic shift is shortened, There is an effect that the performance can be improved.
[0050]
That is, in the first embodiment, the crank shift control described above enables the crank shift control at the highest speed without contacting the gate during the crank shift.
[0051]
Further, in the crank shift control apparatus in the automatic transmission according to the first embodiment, the first and fourth inflection points A and D of the four inflection points are parallel to the one as shown in FIG. Since it is a point on the line 31 and the other parallel line 32, the parallel line 32 extends from one parallel line 31 to the other parallel line 32 of the H-shaped shift pattern along the guide portion 600 having the chamfer 601. There is an effect that the transition to is surely performed.
[0052]
Further, in the crank shift control device in the automatic transmission according to the first embodiment, the second inflection point B of the four inflection points is close to the one parallel line 31 as shown in FIG. Since the third inflection point C of the four inflection points is a point close to the other parallel line 32, the transition from one chamfer 601 to the other chamfer 602 of the guide portion 600 is ensured. In addition, there is an effect of smoothing.
[0053]
In the crank shift control device in the automatic transmission according to the first embodiment, the four inflection points A, B, C, and D are stored in the memory of the control device 5 in advance. There is an effect that the shift operation corresponding to the four inflection points stored in the memory in advance can be performed.
[0054]
Further, the crank shift control device in the automatic transmission according to the first embodiment detects the positions of the four inflection points, and is controlled so as to pass through the detected positions of the four inflection points. Therefore, there is an effect that it is possible to perform control so as to surely pass through the detected positions of the four inflection points.
[0055]
(Second Embodiment)
The crank shift control apparatus in the automatic transmission according to the second embodiment is that the actuator is controlled in consideration of the response delay of the actuator, and the shift lever 6 is controlled without a response delay. This is a difference from the embodiment, and the difference will be mainly described below with reference to FIGS. 9 and 10.
[0056]
In the second embodiment, feed forward (FF) control is performed in consideration of response delays in the shift and select actuators 42 and 43, and the actuator (Act) is delayed in the actual movement with respect to the command (general). This is referred to as “no response time”.
[0057]
Therefore, the stroke speed is calculated from the stroke displacement of the actuator, or the speed of the actuator is detected by a speed sensor.
When the non-response time is t1, the actuator speed is V1, and the current stroke position is S1, the stroke position S ′ after the non-response time is expressed by the following formula.
S ′ = V1 × t1 + S1
[0058]
In the first embodiment shown in FIG. 3 described above, the control method for the actual stroke is described. In the second embodiment, instead of this, the actuator described above as shown in FIGS. 9 and 10 is used. Since the control is performed with respect to the stroke position S ′ pre-read for the non-response time, which is a response delay, the shift operation can be further speeded up as compared with the first embodiment.
[0059]
The above-described embodiments have been illustrated for the purpose of explanation, and the present invention is not limited thereto. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the description of the drawings. Modifications and additions can be made without departing from the technical idea of the present invention.
[0060]
In the above-described embodiment, four inflection points A, B, C, and D have been described as an example for explanation. However, the inflection points may be appropriately omitted as necessary. It does not matter.
[0061]
Furthermore, in the above-described embodiment, the case of shifting from the second (2nd) to the third (3rd) has been described as an example for explanation. However, the present invention is not limited thereto, and the second (2nd) The present invention can be similarly applied when shifting from the fourth speed (4th) or the second (2nd) to the fifth speed (5th) and others.
[0062]
In the above-described embodiment, PID control has been described as an example of a control method for the sake of explanation. However, the present invention is not limited to these, and may be generally represented by PID control or the like. Anything is applicable.
[0063]
Furthermore, although the above-mentioned embodiment demonstrated an example of the usage example of an actuator and a sensor, as this invention, it is not limited to them, A number, arrangement | positioning, and others can be changed as needed. .
[0064]
The actuator can use a mechanism for automatically operating the structure of a conventional manual transmission (MT) or clutch, and its power source, regardless of hydraulic pressure, pneumatic pressure, or electricity (such as a motor).
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining shift patterns of four inflection points of a crank shift control device in an automatic transmission according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram for explaining the direction of the acting force of a shift and select actuator in the crank shift control device of the first embodiment.
FIG. 3 is a diagram showing a change in a target value and a position of a shift lever in a shift direction and a select direction in the crank shift control device of the first embodiment.
FIG. 4 is an explanatory diagram for explaining coordinates of four inflection points in the crank shift control device according to the first embodiment;
FIG. 5 is an explanatory diagram for explaining a locus of movement of the shift lever controlled by the crank shift control device of the first embodiment.
FIG. 6 is a block diagram showing the automatic transmission according to the first embodiment.
FIG. 7 is a chart showing a control procedure of the crank shift control device of the first embodiment.
FIG. 8 is a diagram showing an example of a shift and select target, a stroke, and a movement locus of a shift lever in the first embodiment device;
FIG. 9 is an explanatory diagram for explaining a locus of movement of the shift lever controlled by the second embodiment of the present invention and the crank shift control device of the first embodiment.
FIG. 10 is a diagram showing an example of a shift and select target, a stroke, and a movement locus of a shift lever in the second embodiment.
FIG. 11 is an explanatory diagram for explaining a shift pattern by an H-shaped guide that is chamfered in a conventional manual transmission.
[Explanation of symbols]
1 Manual transmission 1
2 Automatic transmission 3 Shift pattern 6 Shift lever 31, 32 Parallel line 33 Linear shift 34 Crank shift A, B, C, D Inflection point

Claims (7)

An automatic transmission that automatically shifts a manual transmission by an actuator according to an H-type shift pattern comprising a linear shift in which the shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on different parallel lines In
Based on the positional relationship between the current position of the shift lever and the inflection point, a shift and select stroke target is set to change from one parallel line of the H-type shift pattern to the other parallel line in the crank shift. A crank shift control device for an automatic transmission, wherein the locus of movement of the intermediate shift lever to be moved is controlled to be inclined without contacting the gate . In claim 1,
A crank shift control device in an automatic transmission, wherein a locus of movement of the intermediate shift lever is formed in a polygonal line passing through four inflection points. In claim 2,
The crank shift control device in an automatic transmission, wherein the first and fourth inflection points of the four inflection points are points on the one parallel line and the other parallel line. In claim 3,
The second inflection point of the four inflection points is a point close to the one parallel line, and the third inflection point of the four inflection points is a point close to the other parallel line A crank shift control device for an automatic transmission, characterized in that In claim 4,
The crank shift control device in an automatic transmission, wherein the four inflection points are stored in advance in a memory of the control device. In claim 5,
A crank shift control device in an automatic transmission, wherein the positions of the four inflection points are detected and controlled so as to pass through the detected positions of the four inflection points. In claim 6,
A crank shift control device in an automatic transmission, wherein the shift lever is controlled without a response delay by controlling the actuator in consideration of a response delay of the actuator.

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