旋转式水液压比例阀的动态特性仿真研究  

Simulation for Dynamic Character of Rotary Spool Proportional Valve in Water Hydraulics

作　　者：毛燕语[1] 杨友胜[1] 李明杰 

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266100 [2]穆棱市穆棱镇小学,黑龙江牡丹江157513

出　　处：《液压与气动》2017年第7期16-21,共6页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51275495;51475197);中央高校基本科研业务费专项(201562009)

摘　　要：水液压比例/伺服阀是水液压驱动的自动化装备的核心元件,控制着执行元件的运动速度及方向。设计了一种新型旋转式水液压比例阀,介绍了其组成、工作原理及特点,建立了数学物理模型,对其动态特性,特别是频率响应特性进行了仿真研究。得出:适当减小阀芯半径以及阀芯与阀套的配合长度,或适当增加阀芯与阀套的间隙,可提高系统的稳定性及响应频率;力矩电机的转矩常数与转速常数的选择也会影响系统的稳定性与响应频率。Water hydraulic proportional/servo valve, which controls the speed and direction of actuator, is the key control element of the water hydraulic actuated automation equipment. A novel rotary spool proportional valve is developed, and its composition, working principle as well as the features of the design are described. A model is built and the numerical studies are carried out to investigate the dynamic characteristics, especially the frequency response and the stability of the valve. The results show that by reducing the radius of the spool and the length of valve sleeve, or increasing the gap between the spool and the valve sleeve appropriately, we can improve the stability and the response frequency of the system the torque constant and rotational speed constant of torque motor can affect the stability and response frequency of the system.

关 键 词：旋转阀芯 比例阀 动态特性 水液压技术 

分 类 号：TH137[机械工程—机械制造及自动化]