| 摘要 |
PROBLEM TO BE SOLVED: To provide a self alignment torque correction device for a vehicle capable of easily correcting self alignment torque. SOLUTION: Auxiliary steering force from an electric motor M is applied to a steering mechanism 3. A target current value setting part 22 sets up a target current value Iobj of the electric motor based on steering torque and vehicle speed. A self alignment torque correction control part 24 has a steering angle adaptive compensation part 41 generating correction current Iθcorresponding to the steering angle, vehicle speed adaptive compensation part 42 generating compensation gain k corresponding to the vehicle speed, and a multiplication processing part 43 generating correction value Ib(=k.Iθ) by multiplying the correction current Iθby the correction gain k. The target current value Iobj is corrected by the correction value Ib and the electric motor M is controlled by the target current value (Iobj+Ib) after being corrected. COPYRIGHT: (C)2003,JPO |
