JPH04310433A - Shift-in detecting method for shift lever position controller and stroke regulating method - Google Patents

Abstract

PURPOSE:To provide a shift-in detecting method for shift lever position controller and a stroke regulating method capable of preventing stress and a shift miss of a shift lever from occurring. CONSTITUTION:A servomotor 12 of an actuator is rotated at a slow speed according to a speed command of a speed setting part 24 at the regulating time, and in a shift-in judging part 21, after operation force detected by an operation force sensor 16 provided in a shift lever 11 passes through a peak point to decrease and the number of times of level-lowering reaching a set shift-in detection level is confirmed, the increase of the operation force is detected to perform a shift-in judgment, and a stroke, immediately before the shift-in judgment, detected by a stroke detector 13 provided in the servomotor 12 is stored as the shift-in stroke. The stroke of the actuator is regulated by defining the stored value as a stroke command value at the operation time.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting the stroke of an actuator in a shift lever position control device for a transmission.

0002

2. Description of the Related Art A conventional method for adjusting the stroke of an actuator in a shift lever position control device for a transmission will be described with reference to FIG. First, the operation/adjustment switch SW1 is set to the adjustment side, and a person manually operates the shift lever 1 to move the servo motor 2 in the actuator that is free during adjustment. Servo motor 2
is provided with a stroke detector 3 that detects the stroke of the actuator, and the detected stroke is A.
/D converter 4 and input to CPU 5.

The shift lever 1 is stopped at the shift-in completion position, the set button switch SW2 is pressed, and the stroke at this time is stored in the memory section 51.

During operation, by switching the switch S1 to the operating side and turning on the position command switch SW3, the stroke stored in the memory section is retrieved and sent from the D/A converter 6 as a stroke command. This stroke command causes the stroke control amplifier 8,
A servo motor is driven via a servo driver 9 to move the actuator by the stroke at the time of adjustment.

[0005]

In the current actuator stroke adjustment method, a person manually operates a shift lever to determine the stroke position of the actuator, which results in individual differences in stroke adjustment.

[0006] For this reason, if the actuator stroke is set so as to push the shift lever too much, extra force is applied to the shift lever, giving it stress. Also, if you set it toward the front, you may not be able to shift in. If you cannot shift in, you will have to reset it. Also, with this method, it is impossible to automatically adjust the stroke of the actuator without human intervention.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a shift-in detection method for a shift lever position control device that can prevent shift lever stress and shift errors, and to provide a shift-in detection method for a shift lever position control device that can prevent shift lever stress and shift errors. The object of the present invention is to provide a stroke adjustment method.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the shift-in detection method of the shift lever position control device according to the present invention moves the actuator at a slow speed, confirms that the operating force decreases, and detects the set shift. Level drop detection is performed to detect a level drop by comparison with the in-detection level until a set number of level drops is reached, and then an increase in operating force is detected and a shift-in determination is made.

Furthermore, in the stroke adjustment method, shift-in is determined by the above method while detecting the stroke of the actuator, and when an increase in operating force is detected, the previous stroke is memorized as the shift-in stroke, and during operation, the shift-in is determined. The stroke of the actuator is controlled using this stored value as a stroke command value.

0010

[Operation] When the actuator is moved at a slow speed to increase the stroke of the actuator, the operating force increases, and after passing the peak point, the operating force decreases and reaches the shift-in detection level. The number of peaks and drops in this operating force is determined by changing the range, for example, "N" → "1st", "N" → "2nd".
...Varies depending on etc. Therefore, if you check that the operating force decreases and perform level drop detection to detect a level drop by comparing it with the set shift-in detection level until the set number of level drops is reached, it will be close to the shift-in stroke. Points can be detected. Therefore, the optimum shift-in time can be determined by detecting that the operating force increases after the level drop is detected at a predetermined rotation.

Therefore, if the shift-in is determined while detecting the stroke of the actuator and the stroke immediately before the determination is stored as the shift-in stroke, the actuator can be controlled using this stroke as a stroke command during operation.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram showing an example of a shift lever position control device implementing the method of the present invention.

In FIG. 1, 11 is a shift lever; 12 is a shift lever;
is a servo motor in the actuator, 13 is a stroke detector of the actuator using a potentiometer provided on the servo motor, 14 is a rotary encoder provided on the servo motor, 15 is an F/V converter into which the encoder signal is input, 16 is a shift An operating force sensor using a pressure sensor provided on the lever, 17 and 18 are operating force sensors,
A/D converter to which the output of the stroke detector is input.

20 is a CP into which the A/D converter signal is input.
In U, 21 is a shift-in determination unit that makes a shift-in determination based on the operating force T from the A/D converter 18, the operating force limit setting value A1, the level decrease number N, and the shift-in detection level B1, and 25 is a shift-in determination unit. An AND circuit into which the shift-in output of the determination section and the adjustment signal are input; 22 is an A/D converter 17;
23 is a memory value output selection section that selects a stored value in the stroke memory based on the operation signal and position selection signal; 24 is a speed setting section during adjustment.

Reference numerals 31 and 32 indicate D/D inputs to which the outputs of the memory value output selection section 23 and adjustment speed setting section 24 of the CPU are input.
A converter 33 is a stroke control amplifier that amplifies the deviation between the stroke command from the D/A converter 31 and the stroke signal from the stroke detector 13; SW11 is the output of the stroke control amplifier 33 and the D/A converter 32; 34 is a speed control amplifier to which the deviation between the signal selected by the changeover switch SW1 and the speed signal from the F/V converter 15 is input; 35 is a speed control amplifier to which the output of the speed control amplifier is input and the servo motor 12 It is a servo driver that drives the.

Shift-in detection and stroke adjustment using this device will be explained with reference to the operating force characteristics shown in FIG. 2 and the shift stroke adjustment flow shown in FIG. 3.

First, the changeover switch SW1 is set to the adjustment side, and the set speed of the adjustment speed setting section 24 is output as a speed command (step S2 in FIG. 3) (hereinafter, steps S1, S2, etc. in FIG. 3 are simply referred to as S1, S2...), the servo motor 12 is rotated at a slow speed, and the actuator is moved at a slow speed from the neutral "N" to the first "1st" position. As a result, the operating force T increases as shown in FIG. Stroke L and operating force T are detected by stroke detector 13
and is detected by the operating force sensor 16 and input to the stroke memory section 22 and shift-in determination section 21.

The operating force T reaches its peak at the synchronizing point of the synchronizing gear (point b in FIG. 2). If the meshing of the synchro gears is poor, the operating force will reach the limit setting value A1 and adjustment will become impossible. This determination is made by comparing the operating force T and the operating limit setting A in the shift-in determining section 21 (S3
, S31, S32).

After the operating force T passes the peak point b, it decreases and reaches the shift-in detection level B1, and after decreasing further, it increases. The point where the operating force is the lowest just before this increase (point d in FIG. 2) is the optimum shift-in point. This determination is made by confirming that the operating force has decreased in the shift-in determination section, and further confirming that the shift-in detection level B1 has been reached (S4), and then detecting that the operating force has increased (S9). The in output is input to the stroke memory through the AND circuit 25 (S10), the stroke immediately before this shift in output is input is stored in the stroke memory (S11), and the speed command from the speed setting section 24 is stopped during adjustment (S12).
.

[0020] The above shows the shift range from neutral "N" to fast "1s" of the manual transmission.
We have explained the case where the number of times the level is lowered by switching to "t" is 1, but for example, if the manual transmission [M/
There are two peaks in operating force, such as when switching from "1st" to "2nd" for the automatic transmission [A/T] and from "N" to "2nd" for the automatic transmission [A/T]. There is also range switching in which peaks occur three or four times. Therefore, the number N of peaks that occur during range switching is input to the shift-in determination section, and between steps S4 and S9, the number of times the level decreases is measured and compared with the set number N of level decreases in steps S5 to S8. will be established. Thereby, the stroke for switching to each range can be stored in the stroke memory section 22.

During operation, by inputting operation and position selection signals to the memory value output selection section 23, the stroke commands for each range stored in the stroke memory section 22 are output, and the servo motor 12 is controlled. , the actuator can be moved a predetermined stroke.

In this embodiment, the operating force is detected by a pressure sensor and the stroke is detected by a potentiometer, but the current of the servo motor is detected and used as the operating force, and the encoder pulse is used to detect the stroke. Good too,
It is not limited to the examples.

[0023]

[Effects of the Invention] Since the present invention is constructed as described above, it produces the following effects.

(1) The stroke can be automatically adjusted without the need for humans to operate the shift lever.

(2) Since there are no individual differences in stroke adjustment, stress on the shift lever and shift errors can be prevented.

[Brief explanation of drawings]

FIG. 1 is a configuration explanatory diagram of a shift lever position control device according to an embodiment of the method of the present invention.

FIG. 2 is a transmission operating force characteristic diagram.

FIG. 3 is a shift stroke adjustment flow diagram.

FIG. 4 is a configuration explanatory diagram of a shift lever position control device for explaining a conventional shift stroke adjustment method.

[Explanation of symbols]

1, 11...shift lever, 2, 12...servo motor, 3, 13...stroke detector, 4, 17, 18...A/D converter, 5, 20...CPU, 51, 22...stroke memory section, 6, 31, 32...D/A converter, 8, 33...stroke control amplifier, 9, 35...servo drive circuit, 14...Rotary encoder, 15...F/V converter, 21...Shift-in determination section, 23...Memory value output selection section, 24...Adjustment speed setting section, 25...AND circuit, SW1 to SW4, SW11...switches.

Claims (2)

[Claims] [Claim 1] Move the actuator at a slow speed, confirm that the operating force decreases, and perform level drop detection in which a level drop is detected by comparing it with a set shift-in detection level until a set number of level drops is reached. 1. A shift-in detection method for a shift lever position control device, characterized in that a shift-in determination is performed by detecting an increase in operating force. 2. A shift-in determination is performed by the method of claim 1 while detecting the stroke of the actuator, and when an increase in operating force is detected, the immediately preceding stroke is stored as a shift-in stroke, and this storage is performed during operation. A stroke adjustment method for a shift lever position control device, characterized in that the stroke of an actuator is controlled using a value as a stroke command value.