基于ADAMS的载重汽车半主动悬架磁流变减振系统研究

Research on Magneto-Rheological Vibration System of Vehicle Semi-active Suspension Based on ADMAS

为改善车辆悬架系统的刚度和阻尼特性,通过分析载重汽车半主动悬架系统的运动,建立了半主动悬架磁流变减振器阻尼力设计模型,确定了磁流变阻尼器的结构参数、控制策略,应用ADAMS软件仿真分析了磁流变连续可变阻尼半主动悬架的动力学响应。仿真结果表明,磁流变阻尼器具有很好的阻尼减振效应。利用磁流变液体的表观黏度随外加磁场变化阻尼可变的特性,控制半主动悬架的刚度和阻尼规律,实现了载重汽车的自适应减振,有效改善了车辆的行驶平顺性及操纵稳定性。

In order to improve the stiffness and damping characteristic of vehicle suspension system, this paper analyzes the motion of vehicle semi-active suspension system, and builds the damping force design model of semi-active suspension magneto-rheological vibration absorber. The structure parameters and the control strategy are defined and tested on a damper indicator test bench. The dynamics response of the magneto-rheological continuously variable damping semi-active suspension is simulated using ADAMS. The simulation results indicate that magneto-rheological dampers have a perfect damping vibration absorbing effect. The running smoothness and controlling stability of vehicle will be effectively improved using the property that the magneto-rheological fluid＇s apparent viscosity can change with the applied magnetic change damping to control the semi-active suspension＇s stiffness and damping rules.