电反馈式超磁致伸缩伺服阀的理论研究  

An Electric Feedback Giant Magnetostrictive Material(GMM) Servo Valve

作　　者：朱玉川[1] 

机构地区：[1]南京航空航天大学江苏省精密与微细制造技术重点实验室,南京210016

出　　处：《机械科学与技术》2009年第2期254-257,261,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(50805080)资助

摘　　要：设计了一种新型超磁致伸缩执行器驱动的喷嘴挡板伺服阀,基于超磁致伸缩材料磁机耦合理论建立了该伺服阀的数学模型,推导了其简化传递函数、稳定性判断准则及稳定裕量计算公式。最后对超磁致伸缩伺服阀的静动态特性进行了理论研究、仿真实验并与传统喷嘴挡板伺服阀进行了比较,证明了该新型伺服阀具有高频响、高精度、稳定裕度大、静态特性和线性度好等显著优点,并得出了提高超磁致伸缩伺服阀性能的具体途径和方法。A new kind of nozzle flapper servo valve driven by GMA（ Giant Magnetostrictive Actuator） is designed in this paper, its mathematic model is established based on magneto-mechanical theory, its simplified transfer function is deduced, and its stability criterion and stability margin formula are presented. Finally, theoretical analysis and simulation experiment show that GMM（ Giant Magnetostrictive Material）servo valve has higher frequency response, higher presicion, better stability, better static state characteristic and linearity than the traditional nozzle flapper servo valve.

关 键 词：超磁致伸缩执行器 伺服阀 频宽 稳定性 

分 类 号：TH137[机械工程—机械制造及自动化]