基于主动油气悬架的某重型车平顺性研究  

Study on ride comfort of a heavy vehicle based on active hydro-pneumatic suspension

作　　者：乐文超 时岩[1] 彭安琪[1] 李守成[1] 

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《振动与冲击》2016年第24期183-188,共6页Journal of Vibration and Shock

基　　金：江苏省自然科学基金项目(BK20130757)

摘　　要：油气悬架因其变刚度、变阻尼特性在重型车上得到了广泛的应用,但常规的被动式油气悬架不能根据路面条件进行实时调整以满足整车平顺性的要求。在常规油气悬架的基础上提出了一种主动控制方法,首先在AMSEim中建立油气弹簧的数学模型,并通过试验验证模型的正确性,然后建立1/4主动油气悬架的动力学方程,采用Fuzzy-PID算法完成对电液伺服阀的控制,从而实现对主动油气悬架输出力的控制。通过AMESim和MATLAB/Simulink联合仿真表明,该主动油气悬架的性能明显得到改善,与被动悬架相比降低了车身加速度,提高了车辆的平顺性。Because of the variable stiffness and damping characteristics of the hydro-pneumatic suspension,it has been widely used in heavy vehicles. The conventional hydro-pneumatic suspension cannot be adjusted to fulfill the requirements of vehicle ride comfort based on road conditions. In this work,an active control method was proposed based on conventional hydro-pneumatic suspension. After modeling and experimental validation of the hydro-pneumatic spring,a quarter dynamic model of vehicle active hydro-pneumatic suspension was established and then Fuzzy-PID was used to control the active hydro-pneumatic suspension. It was co-simulated with AMESim and MATLAB. The simulation results show that the vehicle acceleration is reduced obviously and the ride comfort characteristics are improved comparing with passive suspension.

关 键 词：油气悬架 主动控制 AMESim/Simulink联合仿真 平顺性 

分 类 号：U461.1[机械工程—车辆工程]