Patent ID: 8483912

Claim:
A control apparatus of a rear-wheel steering apparatus, the rear-wheel steering apparatus comprising: a steering force supplying device capable of supplying rear wheels of a vehicle with a steering force for promoting steering of the rear wheels in accordance with an electrification state; and an electrifying device capable of controlling the electrification state, said control apparatus comprising: a target rudder angle setting device for setting a target rudder angle of the rear wheels; an actual rudder angle specifying device for specifying an actual rudder angle of the rear wheels; and an electrification controlling device for controlling the electrifying device such that the steering force is supplied on the basis of a deviation between the set target rudder angle and the specified actual rudder angle, and for controlling the electrifying device such that electric power supply to the steering force supplying device is cut if the specified actual angle is greater than or equal to a reference rudder angle and if the deviation is greater than or equal to a reference deviation.