Kinematic Performance Analysis of the Double Wishbone Independent Front Suspension

The vector method is applied to study the kinematic performance of the double wishbone independent front suspension.The model of the right front suspension is established in this paper, on this basis, the local motion reference frames of the upper and lower arms are established by using the coordinate transformation method. Therefore, the space relations between of the arms can be transformed into the plane motion of their respectively local reference frame by this method. Furthermore, the variable law of the wheel alignment parameters with the swing angle phi of the lower arm, is obtained through establishing the constrain equations of the key points.