振动环境下2D电液比例伺服换向阀动静态特性的研究  

Dynamic and static characteristics of 2D electro-hydraulic proportional servo valve in vibration environment

作　　者：彭宽栋[1] 张学良[1] 左强[2] 郑龙[1] 曾斌 PENG Kuan-dong;ZHANG Xue-liang;ZUO Qiang;ZHENG Long;ZENG Bin(Institute of High-end Equipment,Hangzhou Polytechnic,Hangzhou 311402,China;School of Engineering,Zhejiang University City College,Hangzhou 310015,China;School of Information Engineering,Zhejiang A&F University,Hangzhou 311300,China)

机构地区：[1]杭州科技职业技术学院高端装备研究所,浙江杭州311402 [2]浙江大学城市学院工程分院,浙江杭州310015 [3]浙江农林大学信息工程学院,浙江杭州311300

出　　处：《机电工程》2019年第1期27-31,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51605430);浙江省自然科学基金资助项目(2015C32083);浙江省公益技术研究项目(LY16F010020);杭州市农业与社会发展科研项目(20180432B37)

摘　　要：针对振动环境下的液压系统对可靠的高压大流量比例伺服换向阀的需求,及实际高端液压系统中的新要求,提出了一种紧凑型大流量2D电液比例伺服换向阀。分析了该阀的螺旋伺服机构工作原理,建立了数学模型,推导了导控级流量方程,并基于振动环境下推导了主阀芯的力学平衡方程,利用Matlab进行了动态响应仿真分析,进行了静动态特性相关实验。研究结果表明:仿真分析、数学解析与实验三者所得到的结果基本吻合;并且在振动环境下叠加颤振后,滞环为2. 9%,且静态特性良好,对应-3 d B、-90°的频宽约为85 Hz,动态特性基本符合设计要求,振动可靠性良好。In order to solve the need of reliable high pressure and large flow proportional servo directional valve for hydraulic system under vibration environment and the new requirements of actual high end hydraulic system,the compact 2D electro hydraulic proportional servo directional valve with large flow rate was proposed. The working principle of the spiral servo mechanism of the valve was analyzed,the mathematical model was established,the flow equation of the guide control stage was derived,and the mechanical balance equation of the main valve core was derived based on the vibration condition,and the dynamic response simulation analysis was carried out by using Matlab. Experiments on static and dynamic characteristics were carried out. The experimental results show that simulation analysis,mathematical analysis and experimental results are basically consistent. Under the vibration environment,the hysteresis loop is 2. 9% and the static characteristic is good. The bandwidth corresponding to-3 d B,-90 °is about 85 Hz. The dynamic characteristic basically accords with the design requirement,the vibration reliability is good.

关 键 词：电液比例伺服阀 振动环境 MATLAB 静动特性 

分 类 号：TH137.52[机械工程—机械制造及自动化]