Patent ID: 11858568
Assignee: KIA MOTORS CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 1:
2. A method for controlling rear wheel steering, comprising:
comparing, by a controller, a steering torque with a torque threshold value;
calculating, by the controller, a steering speed;
comparing, by the controller, the steering speed with a speed threshold value when the steering torque is equal to or greater than the torque threshold value;
calculating, by the controller, a lateral acceleration to match the steering speed when the steering torque is equal to or greater than the torque threshold vale and in response to determining that the steering speed is equal to or greater than the speed threshold value, wherein the lateral acceleration is calculated by reflecting steering angle information acquired from a steering angle sensor and wheel speed information acquired from a wheel speed sensor;
calculating, by the controller, a rear wheel steering angle based on the lateral acceleration;
terminating, by the controller, the method when the steering torque is less than the torque threshold value;
reducing, by the controller, a rear wheel steering angle control amount in response to determining that the steering speed is less than the speed threshold value; and
controlling, by the controller, a rear wheel steering actuator based on the rear wheel steering angle and the lateral acceleration.