电液比例控制油气悬架模拟试验台设计与分析  

Design and analysis of an electro-hydraulic proportional control hydropneumatic suspension simulation test bench

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作  者:武志博[1] 李澜飞 赵振戎 赵浩成 赵星云 张琼瑞 WU Zhibo;LI Lanfei;ZHAO Zhenrong;ZHAO Haocheng;ZHAO Xingyun;ZHANG Qiongrui(State Key Laboratory of Dynamic Measurement Technology,North University of China,Taiyuan 030051,China;Northern Institute of Automatic Control Technology,Taiyuan 030006,China;Ultra High Voltage Transmission Branch,State Grid Shanxi Electric Power Company,Taiyuan 030001,China)

机构地区:[1]中北大学省部共建动态测试技术国家重点实验室,太原030051 [2]北方自动控制技术研究所,太原030006 [3]国网山西省电力公司超高压输电分公司,太原030001

出  处:《兵器装备工程学报》2023年第8期273-278,285,共7页Journal of Ordnance Equipment Engineering

基  金:山西省科技成果转化引导专项基金项目(202104021301061)。

摘  要:针对现有油气悬架模拟试验台加载精度不高、功能相对单一的问题,设计了一套基于电液比例控制技术的多功能复合式模拟试验台.通过建立电液比例液压加载系统的数学模型,完成了系统传递函数的推导.利用Matlab绘制Bode图,分析得到系统的幅值裕度为11 dB,相位裕度为74.9°,系统具有良好的稳定性.利用Simulink搭建系统仿真模型分析其动态特性,结果表明:阶跃响应完全消除稳态误差的时间为0.35 s,系统响应速度较快.因此,该系统可以满足重载车辆油气悬架模拟试验的加载需求.In response to the current situation of low loading accuracy and relatively single function of the existing hydropneumatic suspension simulation test bench,this paper designs a multi-functional composite simulation test bench based on electro-hydraulic proportional control technology.By establishing a mathematical model of the electro-hydraulic proportional hydraulic loading system,the derivation of the system transfer function is completed.Using Matlab to draw Bode diagram,the analysis shows that the system amplitude margin is 11 dB,and the phase margin is 74.9°.The system has good stability.Simulink is used to build a system simulation model to analyze its dynamic characteristics.The results show that the time for the step response to completely eliminate the steady-state error is 0.35 s,and the system response speed is fast.Therefore,this system can meet the loading requirements of the simulation test of the hydropneumatic suspension of heavy-duty vehicles.

关 键 词:模拟试验台 油气悬架 电液比例控制 传递函数法 阶跃响应 

分 类 号:U463.33[机械工程—车辆工程]

 

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