摘要
针对目前电液伺服主动悬架所存在的诸如结构相对复杂、可靠性低等不足,提出了一种基于PBW功率电传技术的EHA(Electro-Hydrostatic Actuator)汽车主动悬架结构。在分析该作动器原理和汽车悬架结构的基础上,利用键图理论分别建立了控制电机、液压元件、EHA作动器及1/4汽车EHA主动悬架的键图模型。采用模糊控制算法和MATLAB工具,对EHA主动悬架进行了仿真计算。并对所研制EHA主动悬架样机模型进行了性能试验。仿真和试验结果表明,所建立的EHA主动悬架的模型是正确的,同时对降低汽车振动、提高汽车行驶平顺性和安全性具有较好的效果。
The structure of traditional electro-hydraulic servo active suspension is relatively complicated. As a result, these active suspension＇s reliabilities drop. A kind of EHA （Electro-Hydrostatic Actuator） active suspension was proposed based on PBW （Power-By-Wire） technology. According to the analyses of EItA principle and suspension structure, bond graph theory was applied to respectively build the bond graphs of controlled motor, hydraulic components, EHA and active suspension with EHA. The fuzzy control arithmetic and MA TLAB tools were adopted and the simulations for EHA active suspension were carried out. And performance tests of developed active suspension with EHA were done. The simulation and experimental results show the established models of EHA active suspension are correct and EttA vehicle active suspension improves ride comfort, handling and stability of vehicle by the decline of vehicle vibration.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第7期2085-2089,共5页
Journal of System Simulation
基金
西安科技大学科技培育基金项目(200729)
关键词
主动悬架
EHA
仿真
台架试验
键图
active suspension
EHA
simulation
bench test
bond graph
