直动式高频响比例阀位置控制研究  

Position Control of Direct-acting High-frequency Proportional Valve

作　　者：陈立娟 彭泽钦 高伟 艾超[2] CHEN Li-juan;PENG Ze-qin;GAO Wei;AI Chao(School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing, Jiangsu 211167;School of Mechanical Engineering, Yanshan University, Qinhuangdao, Hebei 066004)

机构地区：[1]南京工程学院机械工程学院,江苏南京211167 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《液压与气动》2021年第2期36-41,共6页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51775476)。

摘　　要：为了提高比例换向阀的频响和位置控制精度,以直动式电液比例方向阀为研究对象,建立比例阀的非线性数学模型,并结合工程实际,分析比例阀的非线性特性。采用LVDT观测阀芯的位移变化,提出了一种基于前馈补偿的控制方法,并通过AMESim仿真验证该方法的有效性。该控制方法的提出将有助于提高电液比例阀的频响和控制性能,并进一步提升高性能比例阀的生产效率。In order to improve the frequency response and position control accuracy of the proportional directional valve,this article takes the direct-acting electro-hydraulic proportional directional valve as the research object,establishes the nonlinear mathematical model of the proportional valve,and combines the engineering practice to analyze the nonlinear characteristics of the proportional valve.Using LVDT to observe the displacement of the spool,a control method based on feedforward compensation is proposed,and the effectiveness of the method is verified by AMESim simulation.The proposed control method will help to improve the frequency response and control performance of electro-hydraulic proportional valves,and further improve the production efficiency of high-performance proportional valves.

关 键 词：高频响比例阀 非线性特性 位置控制方法 

分 类 号：TH137[机械工程—机械制造及自动化] TM574[电气工程—电器]