| 摘要 |
An electric power steering apparatus according to the present invention comprises steering torque detecting section (12) for detecting a steering torque applied to an operation member (1) for steering a vehicle, steering state judging section (32) for judging whether or not forward stroke steering for operation the operating member (1) in a direction away from a steering angle midpoint is performed, motor controlling section (2) for controlling the driving of an electric motor (M) on the basis of the steering torque detected by the steering torque detecting section (12), and phase compensating sections (22, 23) provided in the motor controlling section (2) for performing such phase compensation processing that a gain in a predetermined frequency band in frequency response characteristics is lower than gains in respective frequency bands lower and higher than the frequency band when the steering state judging section (32) judges that the forward stroke steering is not performed.
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