Steering apparatus controller for electric power steering apparatus

摘要

A steering apparatus controller for an electric power steering apparatus, which includes an electric motor (M) for generating assist torque for assisting steering of a steering wheel (1) and the steering apparatus controller is designed to execute a feedback control of the applied drive voltage to the electric motor (M) based on the detection result of the actual current that flows through the motor. A sensor (22) detects the actual current to produce the detection result. When detecting an abnormal decrease of the drive voltage of the sensor (22), a voltage controller maintains the applied voltage to the electric motor (M) at the voltage at a predetermined time before the drive voltage abnormally decreased.