摆动气缸位置伺服系统特性实验研究  

Experimental Study on Characteristics of Pneumatic Rotary Actuator Position Servo System

作　　者：柏艳红[1] 李小宁[1] 

机构地区：[1]南京理工大学机械工程学院

出　　处：《南京理工大学学报》2008年第1期28-32,共5页Journal of Nanjing University of Science and Technology

基　　金：山西省高校科技研究开发资助项目(2007141)

摘　　要：该文通过大量实验对比例流量阀控摆动气缸位置伺服系统的典型非线性特性进行了研究,主要包括:研究分析了工作点位置、负载大小、摆动气缸两腔初始压力等工作参数对系统特性的影响;指出了系统存在的粘滑振荡、位移波动、"停滞"等现象,并分析了其产生的原因。研究得出:在摆动气缸行程范围内的不同位置或摆动气缸两腔初始压力不同时,系统呈现出不同的特性;摆动气缸的摩擦力及其两腔压力较慢的动态过程引起了系统的"粘滑振荡"等典型非线性现象。The typical nonlinear characteristics of the pneumatic rotary actuator position servo system using proportional flow valves are experimentally studied. First, the influence of such operating parameters as the position of the operating points, the magnitude of the payloads and the initial pressures in the two chambers is studied. Some particular phenomena such as stick-sllp oscillation, dis- placement fluctuation and ＂stagnation＂ are pointed out, and the causes of these phenomena are analyzed. The conclusions are drawn： the system behaviors are different in different positions within the stroke or with different initial pressures in the two chambers; the typical nonlinear phenomena such as stick-slip oscillation are mainly caused by the friction of the actuator and the slow dynamic process of the pressures in the two chambers.

关 键 词：摆动气缸 气动位置伺服系统 系统特性 

分 类 号：TH138.51[机械工程—机械制造及自动化]