JP2008260357A5 - - Google Patents

Claims (3)

Steering torque detecting means for detecting steering torque, current command value calculating means for calculating a current command value based on at least the steering torque detected by the steering torque detecting means, and electric motor for generating steering assist torque to be applied to the steering system Electric power comprising: a motor; drive current detection means for detecting a motor drive current of the electric motor; and motor control means for feedback-controlling the electric motor based on a deviation between the current command value and the motor drive current. A steering device,
A steered state determining unit that determines whether or not the steering wheel is in a steered state; and a filter processing unit that performs a filtering process on the deviation, wherein the motor control unit is the steered state determining unit. When it is determined that the steering wheel is in the steering-holding state, the electric power steering device is configured to perform feedback control of the electric motor based on the deviation filtered by the filter processing unit. It has at least one of vehicle speed detection means for detecting vehicle speed, rotation angle detection means for detecting the motor rotation angle of the electric motor, and motor angular speed detection means for the electric motor, and the steered state determination means includes the steering torque Steering torque detected by the detection means, current command value calculated by the current command value calculation means, vehicle speed detected by the vehicle speed detection means, motor rotation angle detected by the rotation angle detection means, and motor detected by the angular velocity detection means based on at least one angular velocity, an electric power steering apparatus according to claim 1, wherein the steering wheel and judging whether or not the holding steering state. The electric power steering apparatus according to claim 1 or 2 , wherein the filter of the filter processing means is constituted by a low-pass filter.