Patent ID: 11859679
Assignee: DENSO CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A control device that controls a torque transmission device, the torque transmission device including an actuator that operates by being energized and a torque transmission portion that is switched to a transmission state or a non-transmission state by the actuator operating, and configured to transmit a torque between a first transmission portion and a second transmission portion when the torque transmission portion is in the transmission state, the control device comprising:
a target calculation unit configured to calculate a target transmission torque that is a torque to be transmitted between the first transmission portion and the second transmission portion;
a mode determination unit configured to determine that an operating mode is an engagement mode when the target transmission torque increases over time, determine that the operating mode is a release mode when the target transmission torque decreases over time, and determine that the operating mode is a steady mode when the target transmission torque does not change over time; and
a control unit configured to control the actuator based on the operating mode determined by the mode determination unit, wherein
the control unit includes
a feedback control unit configured to perform feedback-control of the actuator based on the target transmission torque,
a gain setting unit configured to set a gain used for the feedback-control by the feedback control unit,
a duty calculation unit configured to calculate a duty based on the gain,
a duty output unit configured to output the duty calculated by the duty calculation unit as an output duty,
an energization control unit configured to control energization of the actuator based on the output duty output from the duty output unit, and
a feedback control adjustment unit configured to shift to a control stop mode that causes the feedback control unit to stop the feedback-control of the actuator when a predetermined stop condition is satisfied in a case where the mode determination unit determines that the operating mode is the steady mode, and

the feedback control adjustment unit stores an integral calculation value in the feedback-control immediately before the feedback control unit stops the feedback-control of the actuator when shifting to the control stop mode, and then restarts the feedback control unit performing the feedback-control of the actuator by using the integral calculation value stored when a predetermined restart condition is satisfied.