电液伺服阀测试台的开发  

Development of Electro-Hydraulic Servo Valve Test Bench

作　　者：余晨阳 陈新元[1] 彭海洋 桂晓江 YU Chen-yang;CHEN Xin-yuan;PENG Hai-yang;GUI Xiao-jiang(Wuhan University of Science and Technology mechanics institute,Hubei Wuhan 430081,China;Shaoguan Quality Measurement Supervision and Inspection Institute,Guangdong Shaoguan 512000,China;Jiangsu Liyuan Hydraulic Machinery Co.,Ltd.,Jiangsu Huaian 223001,China)

机构地区：[1]武汉科技大学机械学院,湖北武汉430081 [2]广东省韶关市质量计量监督检测所,广东韶关512000 [3]江苏力源液压机械有限公司,江苏淮安223001

出　　处：《机械设计与制造》2021年第10期114-118,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51475338)。

摘　　要：开发了一种基于LabVIEW图形编程语言的自动测试系统,能够完成电液伺服阀的空载流量特性、压力增益特性、内泄漏特性等静态特性的自动测试。在测试过程中,由于电液伺服系统本身的特点,一些干扰信号的频段与正常信号的频段非常接近,因此普通数字滤波器很难获得较好的滤波效果。为了准确地过滤这些干扰信号,采用了迭代滤波分解算法对原始信号进行了滤波处理,并将该算法应用到实际的电液伺服阀性能测试系统中,通过与普通数字滤波器的对比,其结果验证了迭代滤波器对信号的处理效果更佳。An automatic test system based on LabVIEW graphic programming language is developed,which can automatically test the static characteristics of electro-hydraulic servo valve,such as no-load flow characteristics,pressure gain characteristics,internal leakage characteristics,etc.In the testing process,due to the characteristics of the electro-hydraulic servo system itself,the frequency band of some interference signals is very close to the frequency band of normal signals,so it is difficult for ordinary digital filters to obtain better filtering effect.In order to filter these interfering signals accurately,an iterative filter decomposition algorithm is used to filter the original signal.The algorithm is applied to the actual performance test system of electro-hydraulic servo valve.By comparing with the ordinary digital filter,the results show that the iterative filter has better effect on signal processing.

关 键 词：电液伺服阀 静态特性测试 测试系统 迭代滤波 

分 类 号：TH16[机械工程—机械制造及自动化]