电液伺服阀用超磁致伸缩转换器的建模与动态仿真研究  

Research on Modeling and Dynamic Simulation of Giant Magnetostrictive Actuator for Electro-hydraulic Servo valve

作　　者：吴晓磊[1] 周禾清[1] 黄宇[1] 王传礼[1] 

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《机床与液压》2013年第1期128-130,共3页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(51075001);安徽省自然科学基金资助项目(070414268x)

摘　　要：介绍电液伺服阀用超磁致伸缩转换器(GMA)的结构和工作原理;在建立转换器数学模型的基础上,构建转换器的AMESim仿真模型,分析阻尼系数、等效质量、驱动频率和GMM棒刚度系数等不同参数对转换器动态特性和输出位移的影响。仿真结果表明:增大阻尼系数,减小等效质量,可以提高转换器的动态特性;减小驱动频率和GMM棒刚度系数,可以增加转换器的输出位移。仿真结果为电液伺服阀用超磁致伸缩转换器的结构参数优化提供了理论依据。The basic structure and working principle of giant magnetostrictive actuator for electro-hydraulic servo valve were in- troduced. The AMESim simulation model of the actuator was established based on the mathematic model. The influences of damping coefficient, equivalent mass, driving frequency, equivalent stiffness coefficient of GMM rod and other structure parameters on the dy- namic characteristics and output displacement of actuator were investigated through simulation. The simulation results show that the dy- namic characteristics of GMA can be improved by increasing the damping coefficient and reducing the equivalent mass, the output dis- placement of GMA can be increased by reducing the driving frequency and equivalent stiffness coefficient of GMM rod. The results pro- vide theoretical basis for the structural parameter optimization of GMA.

关 键 词：超磁致伸缩 转换器 电液伺服阀 动态特性 仿真 

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]