液压与气动2024，Vol.48Issue(6)：159-168,10.DOI:10.11832/j.issn.1000-4858.2024.06.018
非对称喷嘴挡板压力伺服阀建模与特性研究
Modeling and Characteristic Research of Pressure Servo Valve with an Asymmetric Nozzle Flapper
吴河灯 1葛声宏 2周振锋 3杨瀚浩 3陈志闯 1朱玉川1
作者信息
- 1. 南京航空航天大学机电学院,江苏南京 210016
- 2. 南京航空航天大学机电学院,江苏南京 210016||中航工业南京伺服控制系统有限公司,江苏南京 210032
- 3. 中航工业南京伺服控制系统有限公司,江苏南京 210032
- 折叠
摘要
Abstract
The mathematical model and MATLAB/Simulink simulation model were established for a pressure servo valve with an asymmetric nozzle baffle structure(asymmetric pressure valve).The static and dynamic performance of the entire valve was analyzed,and the design principles of asymmetric pressure valve were studied.The research results indicate that the valve is a one-way positive gain pressure servo valve with a dead zone,which has high output pressure,good linearity,small hysteresis,and fast dynamic response.The intersection point of nozzle cavity pressure and output pressure has a unique mapping relationship with static performance indicators,and the position of the intersection point can be used to determine whether the performance of the servo valve meets the working requirements.The asymmetry of the end face area of the valve core is the source of the asymmetry of the front stage.In order to ensure the zero position stability and performance requirements of the asymmetric pressure valve,the front stage needs to be set in an asymmetric form.The liquid resistance coefficient ratio of the fixed throttle hole is greater than that of the nozzle hole.The asymmetry of the nozzle clearance is beneficial for reducing the influence of nozzle structural parameters and facilitating the size design and debugging of the servo valve;Finally,the accuracy of the mathematical model was verified through experiments.The mathematical and simulation models can provide a basis for the structural design and optimization of pressure servo valves.关键词
压力伺服阀/非对称液压阀/MATLAB/Simulink/静态特性/动态特性Key words
pressure servo valve/asymmetric hydraulic valve/MATLAB/Simulink/static characteristic/dynamic characteristic分类
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吴河灯,葛声宏,周振锋,杨瀚浩,陈志闯,朱玉川..非对称喷嘴挡板压力伺服阀建模与特性研究[J].液压与气动,2024,48(6):159-168,10.
