Control device for power transmission mechanism, control method for power transmission mechanism, and program for control device.

Abstract

The first control unit (71) outputs a drive signal to the motor actuator (63) to move the motor clutch (61). The first position determination unit (73) determines the position of the motor clutch (61) based on the output of the sleeve stroke sensor (52). The first wire breakage determination unit (75) detects a wire breakage in the sleeve stroke sensor (52) if the amount of change in the output of the sleeve stroke sensor (52) per predetermined time is greater than or equal to a threshold. The first movement determination unit (77) determines whether or not the motor clutch (61) is moving. The first wire breakage determination unit (75) changes the threshold depending on whether or not the first movement determination unit (77) has determined that the motor clutch (61) is moving or not.

Claims

1. A control device for a power transmission mechanism, comprising: a clutch having a sleeve, which is movable between a cutting position where the drive source and the drive shaft of a vehicle are disconnected and a connecting position where the drive source and the drive shaft are connected, as the sleeve moves in the axial direction; a first position sensor for detecting the position of the sleeve; and an actuator for supplying driving force to move the clutch, A control unit that outputs a drive signal to the actuator to move the clutch, A position determination unit that determines the position of the clutch based on the output of the first position sensor, A wire break detection unit detects a wire break in the first position sensor when the amount of change in the output of the first position sensor per predetermined time exceeds a threshold, The system includes a movement determination unit that determines whether or not the clutch is in motion, The disconnection detection unit changes the threshold depending on whether the movement detection unit determines that the clutch is moving or not. A control device for the power transmission mechanism.

2. In the control device for the power transmission mechanism according to claim 1, The threshold value set when it is determined that the clutch is moving is set to be greater than the threshold value set when it is determined that the clutch is not moving. A control device for the power transmission mechanism.

3. In the control device for the power transmission mechanism according to claim 1, If the wire breakage detection unit determines that there is a wire breakage, the position determination unit retains the previous output of the first position sensor and determines the position of the clutch based on the retained output of the first position sensor. A control device for the power transmission mechanism.

4. In the control device for the power transmission mechanism according to claim 3, The power transmission mechanism further includes a second position sensor for detecting the drive position of the actuator, The position determination unit holds the output of the first position sensor and then determines the position of the clutch based on the output of the second position sensor. A control device for the power transmission mechanism.

5. In the control device for the power transmission mechanism according to claim 1, The wire break detection unit does not perform a wire break detection until a predetermined time has elapsed since the ignition was turned on. A control device for the power transmission mechanism.

6. A control device for a power transmission mechanism comprising: a first clutch having a first sleeve, which is movable between a cutting position where the engine and the drive shaft of a vehicle are separated and a connecting position where the engine and the drive shaft are connected, as the first sleeve moves in the axial direction; a position sensor for the first clutch that detects the position of the first sleeve; a first actuator that supplies a driving force to move the first clutch; a second clutch having a second sleeve, which is movable between a cutting position where the motor and the drive shaft are separated and a connecting position where the motor and the drive shaft are connected, as the second sleeve moves in the axial direction; a position sensor for the second clutch that detects the position of the second sleeve; and a second actuator that supplies a driving force to move the second clutch, wherein A first control unit outputs a drive signal to the first actuator to move the first clutch, A second control unit outputs a drive signal to the second actuator to move the second clutch, A first position determination unit that determines the position of the first clutch based on the output of the position sensor for the first clutch, A second position determination unit that determines the position of the second clutch based on the output of the position sensor for the second clutch, A first wire break detection unit detects a wire break in the position sensor for the first clutch when the amount of change per predetermined time of the output of the position sensor for the first clutch is greater than or equal to a first threshold, A second wire break detection unit detects a wire break in the second clutch's position sensor when the amount of change per predetermined time of the output of the second clutch's position sensor is greater than or equal to a second threshold, A first movement determination unit that determines whether or not the first clutch is in motion, The system includes a second movement determination unit that determines whether or not the second clutch is in motion, The first disconnection determination unit changes the first threshold depending on whether the first movement determination unit determines that the first clutch is moving or not. The second wire break detection unit changes the second threshold depending on whether the second movement detection unit determines that the second clutch is moving or not. A control device for the power transmission mechanism.

7. A control method for a power transmission mechanism comprising: a clutch having a sleeve, which is movable between a cutting position in which the drive source and the drive shaft of a drive wheel are disconnected as the sleeve moves in the axial direction, and a connecting position in which the drive source and the drive shaft are connected; a first position sensor for detecting the position of the sleeve; and an actuator for supplying a driving force to move the clutch, A control step of outputting a drive signal to the actuator to move the clutch, A position determination step in which the position of the clutch is determined based on the output of the first position sensor, A wire break detection step is performed to detect a wire break in the first position sensor when the amount of change in the output of the first position sensor per predetermined time is greater than or equal to a threshold, The system includes a movement determination step for determining whether or not the clutch is in motion, In the wire breakage determination step, the threshold is changed depending on whether the clutch is determined to be moving or not in the movement determination step. A method for controlling a power transmission mechanism.

8. A control device for a power transmission mechanism having a sleeve, a clutch that is movable between a cutting position in which the drive source and the drive shaft of a vehicle are disconnected and a connecting position in which the drive source and the drive shaft are connected as the sleeve moves in the axial direction, a first position sensor for detecting the position of the sleeve, and an actuator for supplying driving force to move the clutch, A control unit that outputs a drive signal to the actuator to move the clutch, A position determination unit that determines the position of the clutch based on the output of the first position sensor, A wire break detection unit detects a wire break in the first position sensor when the amount of change in the output of the first position sensor per predetermined time exceeds a threshold, A program for a control device that functions as a movement determination unit for determining whether or not the clutch is in motion, The disconnection detection unit changes the threshold depending on whether the movement detection unit determines that the clutch is moving or not. The program for the control unit.

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