Control device

A control device whose control target is a vehicle drive device, the vehicle drive device including an input member drivingly coupled to an internal combustion engine, an output member drivingly coupled to a wheel, and a rotary electric machine provided to transmit torque to a power transmission path connecting the input member and the output member, the control device comprising:

• an input torque detection part configured to detect an input torque variation value that is a time-varying value of torque transmitted from the internal combustion engine side to the input member;
• a first filter processing part configured to:
• execute first filter processing of extracting, from the input torque variation value, a torque component that varies with a specific variation period in accordance with a rotation speed of the internal combustion engine;
• and
• obtain a post-first-filter variation value;
• a vibration reduction control part configured to execute vibration reduction processing of calculating an opposite-phase torque variation value that is a torque variation value whose phase is opposite to a phase of the post-first-filter variation value and causing torque corresponding to the opposite-phase torque variation value to be superimposed on output torque of the rotary electric machine;
• and
• a second filter processing part configured to:
• execute second filter processing of extracting, from the post-first-filter variation value, a torque component that varies with a period longer than the specific variation period;
• and
• obtain a post-second-filter variation value,
• wherein
• the vibration reduction control part is configured to cause the vibration reduction processing to be brought into a non-execution state based on the post-second-filter variation value.