泵控缸位置伺服系统建模与特性分析  

Modeling and Characteristic Analysis of Pump Controlled Cylinder Position Servo System

作　　者：沈伟[1,2] 崔霞 SHEN Wei;CUI Xia(Shanghai Ocean University,College of Engineering,Shanghai 201306,China;Shanghai Engineering Research Center of Marine Renewable Energy,Shanghai 201306,China;Shanghai Normal University,TianHua College,Shanghai 201815,China)

机构地区：[1]上海海洋大学工程学院,上海201306 [2]上海海洋可再生能源工程技术研究中心,上海201306 [3]上海师范大学天华学院,上海201815

出　　处：《液压气动与密封》2022年第12期76-84,共9页Hydraulics Pneumatics & Seals

基　　金：上海市工程技术研究中心建设计划(19DZ2254800)。

摘　　要：泵排量控制系统具有工作效率较高、结构紧凑的优点;而动态响应性是泵控系统的不足。该文建立了具有位移-力反馈变量机构的泵控非对称缸位置伺服系统的数学模型,运用MATLAB软件Simulink模块和Simscape模块,建立了系统时域仿真模型,取得了较好的仿真效果。通过仿真验证了电液比例阀子系统固有频率、变量缸子系统的固有频率和变量泵输入转速扰动等因素对泵控非对称缸系统动态响应性的影响,为系统设计和控制策略的改进奠定了的基础。The pump displacement control system has the advantages of high efficiency and compact structure,but the dynamic response is the shortage.In this paper,the mathematical model of pump controlled asymmetric cylinder position servo system is established.The Simulink module and the Simscape module of MATLAB are used to establish the time domain simulation model.The simulation result of time domain model is desirable.By simulation,the influence on dynamic response by the natural frequency of the electro-hydraulic proportional valve subsystem,the natural frequency of the variable mechanism cylinder subsystem and the input speed disturbance of the variable pump is verified.It lays a solid foundation for system design and control strategy improvement.

关 键 词：泵控非对称缸 动态响应性 固有频率 数学建模 仿真建模 

分 类 号：TH137[机械工程—机械制造及自动化] TP391.9[自动化与计算机技术—计算机应用技术]