| 摘要 |
The rotational angle correction controller includes a second correction amount-computing part that computes a second correction amount &egr;2 for correcting the rotational angle &thetas; such that the phase is shifted in the steering operation direction, and the rotational angle correction controller performs the rotational angle correction by adding the computed second correction amount &egr;2 to the rotational angle &thetas;. Further, the rotational angle correction controller includes a stuck steering wheel determining part that detects the significant reduction in the follow-up performance of the motor with respect to the steering operation that occurs due to the existence of the deceleration section caused by execution of the above-described electric current restriction, that is, the occurrence of the stuck steering wheel. When the occurrence of the stuck steering wheel is detected, the second correction amount-computing part changes the second correction amount &egr;2 to a value (&egr;2′) larger than the normal value.
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