Patent ID: 8209089
Filing Date: 2012-06-26
Classification: B62D

Abstract:
1. A vehicular steering apparatus comprising: a road surface reaction torque detection unit that detects an actual road surface reaction torque which is received by a wheel of a vehicle from a road surface; a vehicle speed detection unit that detects a vehicle speed of the vehicle; an angle detection unit that detects a steering wheel angle of a steering wheel of the vehicle or a steered angle of the wheel; a target road surface reaction torque calculation unit that calculates a target road surface reaction torque based on the vehicle speed and an output of the angle detection unit; and a disturbance occurrence detection unit that detects an occurrence of a disturbance to the vehicle and outputs a disturbance state signal; wherein the disturbance occurrence detection unit includes a sign comparison means for making a comparison between positive or negative signs of the actual road surface reaction torque and the target road surface reaction torque to determine if the sign of the actual road surface reaction torque coincides with the sign of the target road surface reaction torque.