Patent ID: 6938725
Filing Date: 2005-09-06
Classification: B62D

Abstract:
1. A steering control apparatus comprising: a steering wheel angle detector for detecting a rotation angle of a steering wheel mounted in a vehicle and outputting a steering wheel angle signal; a road surface reaction force torque detector for detecting a road surface reaction force torque from a front wheel of the vehicle and outputting a road surface reaction force torque signal; a lag arithmetic part, including a first order lag filter to which the road surface reaction force torque signal is input and which has a specified time constant, for calculating a steering reaction force torque using a signal output by the first order lag filter; a first motor fixed to the steering wheel for generating the steering reaction force torque applied to the steering wheel; a first control part for controlling the first motor based on the steering reaction force torque; a lead arithmetic part, including a first order lead filter to which the steering wheel angle signal is input and which has the same time constant as the first order lag filter, for calculating a steering angle signal of the front wheel using a signal output by the first order lead filter; a second motor fixed to the front wheel for controlling the front wheel angle; and a second control part for controlling the second motor based on the steering angle signal.