超磁致伸缩致动器优化设计与特性测试

摘要

The designment of giant magnetostrictive actuator and the optimization of its solenoid coil and enameled wire are presented and the static characteristic and dynamic characteristic of GMA is tested here.The structure of GMA is designed based on the analysis of GMM features and the method of producing bias magnetic field is determined. The magnetic field distribution along the axis and electro-magnetic conversion efficiency are studied when the size parameter are varied,from which the solenoid coil parameter is optimally designed.The model of solenoid coil s power consumption is set up to determine the enameled wire parameter.The result of experiment incarnates fine static and dynamic characteristic of GMA and consistency between design parameter and experimental value, which shows the rationality of the optimal design.%设计了超磁致伸缩致动器(GMA),对线圈尺寸及绕线进行了优化设计,并测试了超磁致伸缩致动器的静、动态特性.在分析超磁致伸缩材料特性的基础上设计了GMA基本结构,并确定了偏置磁场的加载方式.研究了线圈尺寸参数对线圈轴线上磁场分布和线圈的电-磁转换效率两方面的影响,优化设计了线圈的尺寸；提出了线圈功耗表达式并分析了绕线直径对功耗的影响,择优选取了绕线.实验表明GMA具有较好的静态、动态特性,且GMA工作特性与设计参数相吻合,证明了线圈优化设计的合理性.