| 主权项 |
1. A lock-up clutch control device that sets a hydraulic pressure command value for a lock-up clutch as a starting device together with a pump impeller coupled to a motor of a vehicle and a turbine runner coupled to an input shaft of a transmission such that an actual rotational speed difference between the motor and the input shaft coincides with a target slip speed that matches a state of the vehicle, and that controls the lock-up clutch based on the hydraulic pressure command value, the lock-up clutch control device comprising:
an electronic control unit that is programmed to:
acquire a rotational speed of the input shaft; andset a feedback term of the hydraulic pressure command value including at least a proportional term and an integral term using at least a difference between the target slip speed and the actual rotational speed difference, a proportional term gain, and an integral term gain, wherein an amount of variations in the hydraulic pressure command value required to vary the actual rotational speed difference by a certain amount fluctuates in accordance with fluctuations in a reaction torque that acts from an input shaft side against torque from the motor, and at least the integral term gain is changed in accordance with the rotational speed of the input shaft. |
