典型液压节流阀口的动态特性  

Dynamic Characteristics of Typical Hydraulic Notches

作　　者：陈晋市[1] 刘昕晖[1] 元万荣[1] 王同建[1] 赵锋[1] 

机构地区：[1]吉林大学机械科学与工程学院,吉林长春130025

出　　处：《西南交通大学学报》2012年第2期325-332,共8页Journal of Southwest Jiaotong University

基　　金：国家863计划资助项目(2007AA04Z208)

摘　　要：为改善液压系统的性能,选择合适的液压控制阀节流阀口,建立了5种典型液压节流阀口过流面积的数学模型;采用AMESim软件建立了相应的仿真模型,并分别就输入信号、负载和阀口尺寸对5种节流阀口系统动态特性的影响进行了仿真分析.研究结果表明:外形尺寸相同时,L形节流阀口适用于重载、系统压力快速建立的情况,三角槽形节流阀口适用于压力稳定、灵敏度要求高的情况;适当增大阀口的外形尺寸可改善系统的动态响应性能.In order to improve the performance of a hydraulic system and select proper notches of a hydraulic control valve, mathematical models for flow areas of ~e typical hydraulic notches were established, and corresponding simulation models were set up based on software AMESim. The effects of input signal, load and notch dimension on the systematic dynamic characteristics of the five notches were analyzed numerically. The results show that under the same dimension, L-shaped notches are applicable under the circumstances of heavy load and rapid pressure establishing, and triangle notches are suited for the conditions of pressure stability and high sensitive response. To increase the apparent dimensions of notches appropriately can improve the dynamic characteristic of the system.

关 键 词：节流阀口 过流面积 动态性能 仿真分析 

分 类 号：TH137.5[机械工程—机械制造及自动化]