EHA汽车主动悬架试验台虚拟样机模型研究  

VIRTUAL PROTOTYPE STUDY OF VEHICLE ACTIVE SUSPENSION BASED ON EHA

作　　者：赵研[1] 方宗德[1] 寇发荣[1] 张国胜[1] 

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《振动与冲击》2008年第8期110-113,共4页Journal of Vibration and Shock

基　　金：西北工业大学科技创新基金资助(M450211)

摘　　要：提出了一种基于EHA的汽车主动悬架,建立了测试该悬架性能试验台的物理样机。在该物理样机的基础上,采用功率键合图方法和ANSYS-ADAMS-SIMULINK软件,建立了主动悬架试验台的复杂的机、电、液压、控制等多领域的虚拟样机。基于虚拟样机的仿真结果与基于物理样机的试验结果的对比表明:簧载质量的位移及加速度均方根值误差百分比均在8%以内,达到了工程上的要求。同时,加入PID控制后,簧载质量的位移和加速度都减小了30%左右。验证了所建立的机电液一体化系统虚拟样机模型的准确性。A suspension system based on electro hydraulic actuator (EHA) was presented.A physical prototype composed of the electro-mechanical and hydraulic integrated system on the test bed was built, which was used to test the performances of the suspension system. Based on the physical prototype, the virtual prototype of the test bed for the active suspension system was established using the power bond graphs and the software of ANSYS-ADAMS-SIMULINK. The comparisons between the simulation results of the virtual prototype and the test results of the physical prototype show: the errors of root-mean-squares of displacement and acceleration of the sprung mass are both under 8% and the virtual prototype satisfies the need in the engineering. Meanwhile, by the use of the PID control method, the root-mean-squares of displacement and acceleration of the vehicle body are both decreased by about 30%.

关 键 词：EHA 主动悬架 虚拟样机 协同仿真 试验 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]