BEHAVIOR CONTROL SYSTEM FOR VEHICLE AND METHOD THEREOF

摘要

According to the present invention, disclosed are a behavior control system for a vehicle and a method thereof, which compensates Yaw generation using cooperative control of an active front steering (AFS) and a rear wheel steering (RWS) in a vehicle in which the AFS and the RWS are mounted. The behavior control system of the present invention includes: a vehicle speed detection part for detecting a traveling vehicle speed; a steering angle detection part for detecting a steering angle according to the operation of a steering wheel; a rear wheel steering controller which adjusts a steering angle of a rear wheel in an opposite direction to a front wheel according to the steering angle of the steering wheel at low speed, and adjusts the steering angle of the rear wheel in the same direction as the front wheel at high speed; and a front wheel steering controller for determining a steering gear ratio of the front wheel for determining the steering gear ratio of the front wheel according to the traveling speed vehicle speed and the steering angle of the opening angle. The rear wheel steering controller provides steering angle information of the rear wheel for a current steering controller, and the front wheel steering controller. The front wheel controller determines a steering compensation value to compensate Yaw generation if the rear wheel steering angle provided by the rear steering controller is equal to the front wheel steering angle, and then adjusts a front steering angle by adding the steering compensation value to a front gear ratio.