Active Front Wheel Steering System of 4×4 armored vehicle: Rejection of unwanted firing disturbance

Effect of firing force from the gun turret causes external disturbance to an armored vehicle. This disturbance has effected the dynamic performance of the armored vehicle while firing in a moving situation. Therefore, an active safety system is required in order to minimize the effect of firing disturbance to improve the dynamic performance and directional stability of the armored vehicle. In this paper, Active Front Wheel Steering System (AFWS) has been developed as an active safety system for the armored vehicle. An armored vehicle model using Pitman Arm Steering and DC motor model has been used to study the performance of the armored vehicle model using AFWS. In order to enhance the performance of AFWS, additional embodiment known as Estimated Yaw and Lateral disturbance Rejection (EsYLaR) has been included in the control strategy. The performance of the armored vehicle is evaluated in term of yaw rate, yaw angle, lateral acceleration and lateral displacement.