Influence analysis of dynamic changes of wheel alignment parameters on high-speed rocking vibration of steering wheel

Abstract

The control of high-speed rocking vibration of steering wheel is very important for vehicle comfort performance. Among vibration control methods, the reasonable design of wheel alignment parameters is the most effective method. At present, the alignment parameters are obtained through quasi-static test. However, under high-speed driving conditions, the wheel alignment parameters change dynamically, which intensifies the vibration of the steering wheel. Therefore, it is more meaningful to study and control the dynamic characteristics of wheel alignment parameters. In order to analyze the dynamic characteristics of wheel alignment parameters and the problem of high-speed rocking vibration of steering wheel, the method of dynamic identification and dynamic control of alignment parameters is presented in the paper. By controlling the wheel dynamic unbalance and lateral force variations, the dynamic variation of the toe angle is significantly reduced, which reduces the vibration of the steering wheel.