Patent ID: 7703561
Filing Date: 2010-04-27
Classification: B60W,B62D

Abstract:
1. A power steering system comprising: a steering actuator which applies a steering assist force to a front wheel which turns in accordance with a steering state by a driver, a steering state detecting means which detects the steering state by the driver, a rear wheel side actuator which applies drive torques to left and right rear wheels, and a power steering control unit, which monitors a state of the steering actuator and increases the drive torque of the rear wheel side actuator based upon the state of the steering actuator, wherein opposite drive torques in normal and reverse directions are produced on the respective left and right rear wheels, or a drive torque is produced on one of the wheels while a braking force is produced on the other wheel, based on the steering state in a vehicle stopping state, by controlling driving of the rear wheel side actuator.