液压与气动2024，Vol.48Issue(7)：162-170,9.DOI:10.11832/j.issn.1000-4858.2024.07.019
多喷嘴挡板单级电液伺服阀数学模型及特性分析
Mathematical Model and Characteristic Analysis of Multi-nozzle Flapper Single-stage Electro-hydraulic Servo Valve
王彦文 1葛声宏 2陈志闯 1吴河灯 1杨瀚浩 3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
Multi-nozzle flapper single-stage electro-hydraulic servo valve is one of the important components of aircraft auxiliary power unit(APU),which plays the role of precise control of fuel flow.According to the unique structure of torque motor,such as asymmetric initial air gap and unilateral four nozzles,the working mechanism was analyzed,and the mathematical model of the whole valve was established.Through MATLAB/Simulink,the mathematical model was simulated and the output characteristics of each component and the whole valve were obtained among them,the electromagnetic torque generated by the asymmetric initial value of the air gap of the torque motor could balance part of the torque generated by the nozzle liquid flow force.The maximum error is 11.4％when the pressure loss of nozzle cavity is considered and when the pressure loss is not considered.At the same time,the experimental study of multi-nozzle valve was carried out.The mathematical model was compared with the flow characteristic curve of the whole valve obtained by the experiment,and the trend was the same,which verified the accuracy of the mathematical model established,and laid the foundation for the characteristic analysis of the multi-nozzle flapper electro-hydraulic servo valve.关键词
单级伺服阀/多喷嘴/数学模型/流量特性Key words
single stage servo valve/multi-nozzle/mathematical model/flow characteristic分类
机械制造引用本文复制引用
王彦文,葛声宏,陈志闯,吴河灯,杨瀚浩,朱玉川..多喷嘴挡板单级电液伺服阀数学模型及特性分析[J].液压与气动,2024,48(7):162-170,9.
