超磁致伸缩材料的伸缩特性及其磁感应强度控制原理及方法的实现  

The Elastic Characteristic of the Giant Magnetostrictive Materials and the Realization of its Control Principle Based on Magnetic Induction

作　　者：杨兴[1] 贾振元[1] 郭东明[1] 

机构地区：[1]大连理工大学机械工程学院,116024

出　　处：《电工技术学报》2001年第5期55-58,共4页Transactions of China Electrotechnical Society

基　　金：教育部高校博士点专项基金资助项目 ( 2 0 0 0 0 14 10 9)

摘　　要：超磁致伸缩材料 (GiantMagnetostrictiveMaterial,简称GMM )是近年来发展起来的一种新型功能材料。在分析了磁致伸缩现象产生的唯象机理的基础上 ,建立了超磁致伸缩材料的控制模型 ,提出采用磁感应强度作为控制量的原理及其在执行器中的具体实现方法 ,并对采用电流强度 (磁场强度 )和磁感应强度作为控制量的两种控制方法进行了对比分析和实验研究 ,得出了基于磁感应强度的控制方法可提高超磁致伸缩微位移执行器的线性度和控制精度并减小滞回的结论。Giant magnetostrictive materials (GMM) is a new type of functional materials which has been developed in recent years. In this paper, based on the knowledge of the magnetostriction generating mechanism, we constructed the control model of GMM, proposed the theory in which the magnetic induction was adopted as the control variable and developed the concrete realization method in actuator, compared and analyzed the results of two control techniques in which current intensity and magnetic induction are respectively taken as control variables, obtained the satisfactory conclusion of how to improve the linearity and control precision of microdisplacement actuator and reduce the hysteresis based on the control method of magnetic induction.

关 键 词：铁磁材料 超磁致伸缩材料 伸缩特性 磁感应强度 控制原理 

分 类 号：TM271[一般工业技术—材料科学与工程]