Patent ID: 6079513
Filing Date: 2000-06-27
Classification: B62D

Abstract:
A steering apparatus for a vehicle comprising:a steering operating means;a steering mechanism which is not mechanically connected to the steering operating means;a vehicle speed sensor detecting vehicle speed;a steering angle sensor detecting a moved position of the steering operating means;a moved position sensor detecting an actual moved position of the steering mechanism;a reaction force motor applying a reaction force torque to the steering operating means; anda processor calculating a target value for the reaction force torque on the basis of (a) a self-aligning torque term based on a detected value of the vehicle speed sensor and a detected value of the moved position sensor, (b) an elastic resistance torque term which is proportional to a deviation between a detected value of the steering angle sensor and a detected value of the moved position sensor, and (c) an inertial resistance torque term which is proportional to a time varying amount of the deviation,whereby the application of the reaction force to the steering operating means is controlled by driving the reaction force motor on the basis of the calculated target value.