Position Control for Asymmetrical Hydraulic Cylinder System Using a Single On/Off Valve  

作　　者：雷军波 王宣银 徐志鹏 罗语溪 皮阳军 

机构地区：[1]State Key Laboratory of Fluid Power Transmission and Control,Zhejiang University [2]College of Engineering,Jiangxi Agricultural University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2010年第6期651-656,共6页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China (No. 50575202)

摘　　要：A single on/off valve is used to carry out the position control of the asymmetrical hydraulic cylinder. The influence of the nominal flow rate on the positional accuracy of piston is investigated and the proximate formula for calculating the nominal flow rate of on/off valve is introduced. The system structure proposed in this paper could avoid cavitation and hyper pressure in two chambers to some extent. The simulation results indicated that the control method in this paper could satisfy the expected control requirements.A single on/off valve is used to carry out the position control of the asymmetrical hydraulic cylinder. The inuence of the nominal flow rate on the positional accuracy of piston is investigated and the proximate formula for calculating the nominal flow rate of on/off valve is introduced. The system structure proposed in this paper could avoid cavitation and hyper pressure in two chambers to some extent. The simulation results indicated that the control method in this paper could satisfy the expected control requirements.

关 键 词：on/off valves asvmmetrical hydraulic cvlinder position control 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置] TH137.7[自动化与计算机技术—控制科学与工程]