Patent ID: 8050825
Filing Date: 2011-11-01
Classification: B62D

Abstract:
1. An electric power-steering control apparatus that assists in steering wheels of a vehicle in response to a steering torque applied by a driver by using a driving force of a motor, the electric power-steering control apparatus comprising: a steering-torque detecting unit that detects the steering torque as a steering torque signal; a phase-lag compensation unit that performs an operation having a frequency response characteristic of multiplying a phase-lag compensation by a constant for the steering torque signal based on a first signal obtained by applying an amplification by a first gain and a low pass filter on the steering torque signal and a second signal obtained by applying an amplification by at least a second gain on the steering torque signal; and a current control unit that controls a current applied to the motor to follow a current command that is obtained based on an output of the phase-lag compensation unit.