基于AMESim的喷嘴挡板伺服阀动态性能分析  

Dynamic performance analysis of nozzle baffle servo valve based on AMESim

作　　者：李云松[1,2] 陈小安[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]重庆广播电视大学机电工程学院,重庆400052

出　　处：《现代制造工程》2017年第3期88-94,共7页Modern Manufacturing Engineering

摘　　要：喷嘴挡板伺服阀的动态性能关系到电液调速系统的控制精度和响应速度。根据挡板组件、阀芯套件的运动规律,推导出了挡板的位移偏移与控制滑阀位移的函数关系和动态平衡方程。结合某型伺服阀的相关参数,采用AMESim软件建立了喷嘴挡板伺服阀动态模型,仿真结果表明:伺服阀具有超快的响应、较高的灵敏度、良好的油压稳定性和稳定的动态跟随性能;系统在阶跃响应下,挡板与喷嘴的间隙能快速准确地回到初始位置保证了稳定初调速度。分析了伺服阀内部状态变量的灵敏度特征,为喷嘴挡板伺服阀结构参数优化和动态性能分析提供了理论依据。The dynamic performance of the nozzle baffle servo valve is related to the control precision and the response speed of the electro-hydraulic speed control system. According to the geometric relationship among the baffle components and the main valve, the functional relation between the baffle and the control valve and dynamic equilibrium equation of the servo valve were constructed. The dynamic model of the nozzle baffle servo valve is established by AMESim with relevant parameters of a certain type of servo valve. The results showed that servo valve has an ultra fast response, high sensitivity, good oil pressure stability and stable dynamic following performance ;it is proved that under the step response of the system, the gap between the flapper and the nozzle can return to the initial state both quickly and accurately,which will help ensure the stability of the initial setting speed. The sensitivity characteristics of the internal state variables of the servo valve are analyzed, so this modeling method provides a theoretical basis for the optimal design and dynamic analysis of servo valves.

关 键 词：AMESIM 喷嘴挡板 动态性能 仿真分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]