CONTROL OF MOTOR-DRIVEN TYPE POWER STEERING DEVICE FOR VAHICLE

摘要

PURPOSE:To improve the responsiveness in the handle return control at extremely low speed, by adding the negative viscous element value to the steering angular speed in the low car speed region and feedback-controlling the steering angular speed to the difference between the aimed value and the actual value in the primary delaying system. CONSTITUTION:A motor-driven type power steering part 4 is controlled by a control part 23 according to the output of a torque sensor 2 for detecting the torque on the basis of the operation of a steering wheel 1, and a control pert 3 is constituted of an aimed value setting means 3a for setting the aimed value Tt of the steering force or motor output and a primary delaying system setting means 3b which generates the negative value in the low car speed region from V0 to V1 (V0