| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power steering device for achieving fine inertia compensation control while keeping the stability of a system. SOLUTION: A target current value setting part 12 sets a target current value Iobj for driving an electric motor M based on a vehicle velocity V and steering torque T. A torque differential control part 13 applies a plurality of differential processing with different frequency characteristics to the steering torque T in parallel, and a torque differential correction value It is derived based on a result of the processing. A rotational angular velocity differential control part 15 applies a plurality of differential processing with the differential frequency characteristics to a motor rotational angular velocityωin parallel, and a rotational angular velocity differential correction value Iωis derived based on the result of the processing. The target current value Iobj is corrected based on the correction values It, Iω. COPYRIGHT: (C)2004,JPO&NCIPI |
