JP2002195405A - Crank shift control device for automatic transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the shift action of a driver her/himself, shorten the shift action time in an automatic speed change, and improve performance. SOLUTION: In this automatic transmission 2, a manual transmission 1 is automatically speed-changed by an actuator according to an H type shift pattern comprising a linear shift 33 in which a shift lever 6 is linearly moved on the same line and a crank shift 34 in which the shift lever 6 is moved into a crank shape on different parallel lines 31 and 32. The locus of the movement of the shift lever moving from one parallel line 31 to the other parallel line 32 of the H type shift pattern 3 in the crank shift 34 is controlled to obliquely draw a polygonal line passing through four inflection points A, B, C, D in this crank shift control device for the automatic transmission.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator according to an H-shaped shift pattern comprising a linear shift in which a shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on a different parallel line. And an automatic transmission for automatically shifting a manual transmission.

[0002]

2. Description of the Related Art In a conventional manual transmission, from the viewpoint of operability, a guide of an H-shaped shift pattern is provided, for example, from a second (2nd) to a third (3r) as shown in FIG.
The chamfer M was applied to the H-shaped guide portion G when shifting to d), and the driver performed the shift operation along the chamfer M of the guide portion G.

[0003] An automatic transmission has been developed in which an actuator (Act) is attached to a conventional manual transmission (MT), and a shift operation is automated to perform an automatic shift.

However, a general manual transmission employs 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 a different parallel line. Therefore, the conventional automatic transmission has a configuration in which a control system is added to a manual transmission having an H-shaped shift pattern.

[0005]

In the above-mentioned conventional manual transmission, as shown in FIG. 11, a second (2n)
The driver himself had to perform the shift operation along the guide portion G where the chamfer M was performed when shifting from d) to the third (3rd).

Further, in the conventional automatic transmission, there is a problem that the neutral range Y shown in FIG. 1 is very narrow, 1 mm or less, and it is difficult to operate the shift lever obliquely.

In addition, there are dimensional variations, and in order to achieve this crank shift in a controlled manner, it is necessary to perform an operation for the worst dimension. The worst here means the thing which can pass through the narrowest area. In this state, much time is required for the crank shift, and performance improvement cannot be expected.

Therefore, the present inventor has manually operated the actuator in accordance with an H-shaped 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 a different parallel line. In an automatic transmission that automatically shifts the transmission,
Attention is paid to the technical idea of the present invention in which the movement trajectory of the intermediate shift lever which shifts from one parallel line to the other parallel line of the H-shaped shift pattern in the crank shift is controlled to be oblique. As a result of further research and development, the present invention has been made to achieve the object of eliminating the driver's own shift operation, shortening the shift operation time in automatic shifting, and improving the performance.

[0009]

According to a first aspect of the present invention, there is provided a crank shift control device for an automatic transmission, which is different from a linear shift in which a shift lever moves linearly on the same line. An automatic transmission in which a manual transmission is automatically shifted by an actuator in accordance with an H-shaped shift pattern comprising a crank shift in which a shift lever moves in a crank shape on a line, wherein one parallel line of the H-shaped shift pattern in the crank shift is provided. Is controlled so that the locus of the movement of the intermediate shift lever, which shifts from the second parallel line to the other parallel line, becomes oblique.

[0010] The crank shift control device for an automatic transmission according to the present invention (a second invention according to a second aspect of the present invention) is configured such that:
In the present invention, the trajectory of the movement of the intermediate shift lever is a polygonal line passing through four inflection points.

According to the third aspect of the present invention, there is provided a crank shift control device for an automatic transmission, wherein
In the invention, the first and fourth inflection points of the four inflection points are points on the one parallel line and the other parallel line.

According to a fourth aspect of the present invention, there is provided a crank shift control device for an automatic transmission according to the third aspect.
In the present invention, a second inflection point of the four inflection points is a point close to the one parallel line, and a third inflection point of the four inflection points is the other parallel line. Is a point close to

[0013] The crank shift control device for an automatic transmission according to the present invention (fifth invention according to claim 5) may be configured such that:
In the present invention, the four inflection points are stored in a memory of a control device in advance.

According to a sixth aspect of the present invention, there is provided a crank shift control device for an automatic transmission according to the fifth aspect.
In the present invention, the positions of the four inflection points are detected, and control is performed so as to pass through the detected positions of the four inflection points.

[0015] The crank shift control device for an automatic transmission according to the present invention (a seventh invention according to a seventh aspect) is configured as follows.
In the invention, the shift lever is controlled without a response delay by controlling the actuator in consideration of a response delay of the actuator.

[0016]

According to the first aspect of the present invention, there is provided a crank shift control device for an automatic transmission according to a first aspect of the present invention, wherein an intermediate portion of the H-shaped shift pattern in the crank shift is shifted from one parallel line to the other parallel line. Since the movement trajectory of the shift lever is controlled to be oblique, the driver does not need to perform the shift operation himself and has the effect of shortening the shift operation time in automatic shifting.

The crank shift control device for an automatic transmission according to the second aspect of the present invention, wherein the trajectory of the movement of the intermediate shift lever is a polygonal line passing through four inflection points in the first aspect. Therefore, there is an effect that the shift operation time in the automatic transmission is shortened and the performance can be improved.

In the crank shift control apparatus for an automatic transmission according to the third aspect of the present invention, the first and fourth inflection points of the four inflection points may be parallel to one of the four inflection points. Point on the line and the other parallel line,
Smoothly along the chamfered guide section,
There is an effect that the transition from one parallel line to the other parallel line of the mold shift pattern is reliably performed.

According to a fourth aspect of the present invention, in the crank shift control device for an automatic transmission according to the third aspect, the second inflection point of the four inflection points is 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, the transition from one chamfer to the other chamfer of the guide portion is reliably and smoothly performed. This has the effect.

In the crank shift control apparatus for an automatic transmission according to the fifth aspect of the present invention, the four inflection points are stored in advance in the memory of the control apparatus. This makes it possible to perform a shift operation corresponding to the four inflection points previously stored in the memory.

In the crank shift control device for an automatic transmission according to a sixth aspect of the present invention, the positions of the four inflection points are detected in the fifth aspect, and the detected four inflection points are detected. Is controlled so as to pass through the positions of the four inflection points, so that it is possible to perform control so as to reliably pass through the positions of the four detected inflection points.

In the crank shift control apparatus for an automatic transmission according to the seventh aspect of the present invention, the actuator is controlled in consideration of a response delay of the actuator in the sixth aspect, so that the shift lever responds. This has the effect of being controlled without delay.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are described below.
This will be described with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 to 7, a crank shift control device for an automatic transmission according to a first embodiment includes a linear shift 33 in which the shift lever 6 moves linearly on the same line. Parallel lines 31, 32 different from
In the automatic transmission 2 in which the manual transmission 1 is automatically shifted by an actuator in accordance with an H-shaped shift pattern comprising a crank shift 34 in which the shift lever 6 moves in a crank shape, the H-shaped shift pattern 3 in the crank shift 34 Is controlled so that the locus of the movement of the intermediate shift lever 6 that shifts from one parallel line 31 to the other parallel line 32 becomes a polygonal line passing through four inflection points A, B, C and D. Is what is done.

The automatic transmission 2 according to the first embodiment comprises:
As shown in FIG. 6, the present invention is directed to a manual transmission 1 in which the rotation of an input shaft connected to an output shaft of an engine (or a motor) 3 is changed by a plurality of gears and the rotation is output from the output shaft.

The automatic transmission 2 according to the first embodiment
Includes a clutch actuator 41 for controlling the clutch of the manual transmission 1 described above, a shift actuator 42 for controlling a shift operation, and a select actuator 43 for controlling a select operation.

The actuator is provided with a mechanism for automatically operating the structure of the conventional MT or clutch regardless of hydraulic pressure, pneumatic pressure, or electricity (such as a motor) and a power source for the mechanism.

Further, the automatic transmission 2 according to the first embodiment includes an ECU which is a control device 5 for controlling the clutch actuator 41, the shift actuator 42, and the select actuator 43.

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) of such a guide.
The guides shifted from the fourth speed (4th) to the fifth speed (5th) are provided with inclined chamfers 601 and 602.

That is, in the first embodiment, the shift lever 6 moves linearly on the same lines 31 and 32 in accordance with the guide 600, and the shift lever 6 moves on different parallel lines 31 and 32. The actuator basically follows an H-shaped shift pattern including a crank shift 34 that moves in a crank shape.
43, the chamfered portion 601 of the shift lever 6
Is configured to allow a partially deformed automatic shift along.

Therefore, the four inflection points A, B, C, D
The point at which the trajectory of the shift lever 6 is inflected when 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 is performed (each And the coordinates of the contact point where the outer wall of the shift lever 6 is in contact with both end positions of the chamfered portions 601 and 602 of the guide 600, respectively, as shown in FIG. And the position (coordinates) of the axis of the shift lever 6 in contact with the contact point.

The control device 5 includes a clutch sensor 61 for detecting the position or load of the clutch, a shift sensor 62 for detecting the position or load of the shift, a select sensor 63 for detecting the position or load of the select, Input shaft sensor 6 for detecting the rotation speed of the input shaft of transmission 1
4, an output shaft sensor 65 for detecting the rotation speed of the output shaft of the manual transmission 1, a shift lever sensor and a steering switch 66 for detecting the position of the shift lever 6 as a sensor and switches that can recognize the driver's will. , An accelerator pedal sensor and a brake pedal sensor 67 are connected to output a control signal to the actuator based on information from the sensor.

FIG. 2 shows a procedure of crank shift control in the automatic transmission according to the present embodiment, which is stored in advance in a ROM which is a memory of an ECU constituting the control device 5.
4 and FIG. 7 will be described below.

Step 20 after starting in FIG.
At 1, 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 set to the coordinate xa in the select direction of the first inflection point.

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.

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.

In step 204, it is determined whether the difference between the current position Y of the shift actuator 42 in the shift direction and the coordinate yb of the second inflection point in the shift direction is smaller than a reference value Z close to zero.

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 the coordinate X2 that is the final target coordinate.
(On the other parallel line 32).

In step 206, it is determined whether or not the difference between the current position Y of the shift actuator 42 in the shift direction and the coordinate yc of the third inflection point in the shift direction is smaller than a reference value Z close to zero.

When it is determined in step 206 that the difference between the current position X of the select actuator 43 in the select direction and the coordinate xc of the third inflection point in the select direction 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 final target coordinate X2 (the other parallel line). 32 above).

In step 208, it is determined whether or not the difference between the current position X of the select actuator 43 in the select direction and the coordinate xd of the fourth inflection point in the select direction is smaller than a reference value Z close to zero.

When it is determined in step 208 whether the difference between the current position X of the select actuator 43 in the select direction and the coordinate xd of the fourth inflection point in the select direction is smaller than a reference value Z close to 0, In step 209, the target in the shift (Y) direction is set to the final target coordinate Y2, and the target in the select (X) direction is the final target coordinate X2 (on the other parallel line 32).
Is set to

The ROM, which is the memory of the ECU constituting the control device 5, stores first and fourth inflection points of the four inflection points on the one parallel line and the other parallel line.
Are the points near the one parallel line 31, and the third inflection point of the four inflection points is Point C is a point close to the other parallel line 32, and each coordinate (x shown in FIG. 4 in which the positions and shapes of the chamfers 601 and 602 of the guide portion 600 are considered.
a, ya) (xb, yb) (xc, yc) (xd, y
d) is stored in advance, and the stored positions of the four inflection points are detected, and control is performed so as to pass through the detected positions of the four inflection points. .

The crank shift control device for the automatic transmission according to the first embodiment described above detects the positions of the four inflection points A, B, C, and D shown in FIG. When the target stroke is set, the crank is accurately shifted by converging the stroke toward the target by feedback control.

In the first embodiment, the actuator (Act) is driven as indicated by the arrow shown in FIG. That is, the shift lever is released by the shift actuator 42 that controls the shift operation while pressing in the select direction by the select actuator 43 that controls the select operation.

The shift and select inflection points A,
B, C, and D are called out 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 every moment by the shift lever sensor 66. By the feedback control, the shift lever 6 is moved to A, B, C, D
Is controlled to pass through each inflection point.

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. Let it.

However, in the first embodiment, the PID control of the actual stroke with respect to the stroke target is performed.

The above-described crank shift control device for the automatic transmission according to the first embodiment is characterized in that the intermediate shift lever moves from one parallel line to the other parallel line of the H-shaped shift pattern in the crank shift. As shown in FIG. 5, the trajectory of the vehicle is controlled so as to be inclined in a polygonal line passing through four inflection points. There is an effect that the length can be shortened and the performance can be improved.

That is, in the first embodiment, the above-described crank shift control enables the fastest crank shift control without contacting the gate during the crank shift.

Further, in the crank shift control device for the automatic transmission according to the first embodiment, the first and fourth inflection points A and D of the four inflection points are set as shown in FIG. Since the point is on one of the parallel lines 31 and the other of the parallel lines 32, the guide portion 600 on which the chamfer 601 is performed is provided.
And the transition from one parallel line 31 to the other parallel line 32 of the H-shaped shift pattern is reliably performed.

Further, the crank shift control device in the automatic transmission according to the first embodiment is provided with the second inflection point of the four inflection points.
The inflection point B is a point close to the one parallel line 31 as shown in FIG. 1, and the third inflection point C of the four inflection points is close to the other parallel line 32 Therefore, the transition from one chamfer 601 to the other chamfer 602 of the guide portion 600 is ensured and smooth.

Further, the crank shift control device in the automatic transmission according to the first embodiment includes the four inflection points A, B,
Since C and D are stored in the memory of the control device 5 in advance, there is an effect that a shift operation corresponding to the four inflection points stored in the memory of the control device in advance is enabled.

Further, the crank shift control device in the automatic transmission according to the first embodiment detects the positions of the four inflection points, and passes through the detected positions of the four inflection points. Since the control is performed, there is an effect that the control can be performed so as to reliably pass through the detected positions of the four inflection points.

(Second Embodiment) In a crank shift control device for an automatic transmission according to a second embodiment, an actuator is controlled in consideration of a response delay of the actuator.
The difference from the first embodiment is that the shift lever 6 is controlled without a response delay. The difference will be mainly described below with reference to FIGS. 9 and 10.

In the second embodiment, feedforward (FF) control is performed in consideration of the response delay in the shift and select actuators 42 and 43.
In the operation of the actuator (Act), a delay (generally, no response time) occurs in an actual movement in response to a command.

Thus, the stroke speed is calculated from the stroke displacement of the actuator, or the speed of the actuator is detected by a speed sensor. No response time t
1. Assuming that the actuator speed is V1 and the current stroke position is S1, the stroke position S 'after the no response time.
Is represented by the following equation. S ′ = V1 × t1 + S1

In the above-described first embodiment shown in FIG. 3, the control method for the actual stroke is described. However, in the second embodiment, instead of this, as shown in FIG. 9 and FIG. Since the control is performed on the stroke position S ′ read ahead for the non-response time, which is the response delay of the actuator, the shift operation can be further speeded up as compared with the first embodiment.

The above-described embodiments have been described by way of example only, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without departing from the technical idea of the present invention.

In the above-described embodiment, four inflection points A, B, C, and D have been described as an example for explanation. However, inflection points may be omitted or the position may be appropriately changed as necessary. You can change it.

Further, in the above-described embodiment, as an example for explanation, the second (2nd) to the third (3r)
Although the case of shifting to d) has been described, the present invention is not limited thereto, and the second (2n)
The same applies when shifting from d) to 4th speed (4th) or from 2nd (2nd) to 5th speed (5th) or the like.

In the above-described embodiment, the PID control has been described as an example of the control method for the purpose of explanation. However, the present invention is not limited to this.
Generally, anything can be applied as long as it is represented by PID control or the like.

Further, in the above-described embodiment, an example of use of the actuator and the sensor has been described. However, the present invention is not limited to this, and the number, arrangement, and the like can be changed as necessary. It is possible.

Regarding the actuator, a mechanism for automatically operating the structure of a conventional manual transmission (MT) or a clutch and its power source can be used regardless of hydraulic pressure, pneumatic pressure, or electric (motor or the like). .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining shift patterns at 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 directions of operating forces of a shift and a select actuator in the crank shift control device according to the first embodiment.

FIG. 3 is a diagram showing a change in a target value and a shift lever position 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 describing a locus of movement of a shift lever controlled by the crank shift control device according to 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 illustrating an example of a shift and select target, a stroke, and a locus of movement of a shift lever in the first embodiment.

FIG. 9 is an explanatory diagram for explaining a locus of movement of a shift lever controlled by the crank shift control device according to the second embodiment and the first embodiment of the present invention.

FIG. 10 is a diagram illustrating an example of a shift and select target, a stroke, and a locus of movement of a shift lever in the device according to the second embodiment.

FIG. 11 is an explanatory diagram for explaining a shift pattern by a chamfered H-shaped guide in a conventional manual transmission.

[Explanation of symbols]

 DESCRIPTION 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

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ryuji Choji 1 Aichi Shiroyama, Kojimacho, Nishio City, Aichi Prefecture Inside (72) Inventor Mitsutoshi Kamiya 1 Shiroyama Kojimacho, Nishio City, Aichi Prefecture Aisin AI (72) Inventor Yoshihiro Ichikawa 2-3-3 Showa-cho, Kariya-shi, Aichi F-term (reference) in Ishin Engineering Co., Ltd. 3J067 AA04 AA21 AB11 AB23 AC01 BA52 BA58 CA31 FA03 FA13 FB42 FB45 FB62 FB90

Claims (7)

[Claims] 1. A manual transmission is automatically operated by an actuator according to an H-shaped shift pattern including a linear shift in which a shift lever moves linearly on the same line and a crank shift in which the shift lever moves in a crank shape on a different parallel line. In the automatic transmission that shifts gears, the trajectory of movement of an intermediate shift lever that shifts from one parallel line to the other parallel line of the H-shaped shift pattern in the crank shift is controlled to be oblique. Crank shift control device for an automatic transmission. 2. The crank shift control device for an automatic transmission according to claim 1, wherein the locus of the movement of the intermediate shift lever is a polygonal line passing through four inflection points. 3. The automatic transmission according to claim 2, wherein the first and fourth inflection points of the four inflection points are points on the one parallel line and the other parallel line. Shift control device for the machine. 4. The inflection point of the four inflection points according to claim 3, wherein a second inflection point of the four inflection points is a point close to the one of the parallel lines. The point is,
A crank shift control device for an automatic transmission, wherein the crank shift control device is located at a point close to the other parallel line. 5. The crank shift control device for an automatic transmission according to claim 4, wherein the four inflection points are stored in a memory of the control device in advance. 6. The method according to claim 5, wherein the positions of the four inflection points are detected and the detected four inflection points are detected.
A crank shift control device for an automatic transmission, which is controlled so as to pass through the positions of inflection points. 7. The crank shift according to claim 6, wherein the shift lever is controlled without a response delay by controlling the actuator in consideration of a response delay of the actuator. Control device.