惯性式超磁致伸缩直线驱动器建模与实验  

Modeling and Experiments of Inertial Magnetostrictive Linear Actuators

作　　者：周景涛 何忠波 刘国平 柏果 ZHOU Jingtao;HE Zhongbo;LIU Guoping;BAI Guo(Department of Vehicle and Electrical Engineering,Army Engineering University Shijiazhuang Campus,Shijiazhuang 050003,Hebei Province,China)

机构地区：[1]陆军工程大学石家庄校区车辆与电气工程系,河北省石家庄市050003

出　　处：《中国电机工程学报》2020年第10期3350-3358,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51275525)。

摘　　要：为了满足大行程、高精度直线位移的需求,根据尺蠖运动原理,设计出一种惯性冲击式超磁致伸缩直线驱动器,通过对激励线圈施加锯齿波信号,可以实现步进式累积位移运动。根据电压定律、磁阻理论和动力学理论,以磁路模型、标准平方模型和J-A模型为基础,建立系统的位移模型。搭建实验平台,对设计的样机进行实验测试。模拟和实验结果表明:驱动器的平均最小和最大单步位移为2.41mm和7.49mm,最大工作频率为60Hz;柔性铰链两端位移的实验值曲线和模拟值曲线基本吻合;在工作电压3~9V范围内,系统输出位移的实验值和模拟值最大相对误差为6.48%。In order to meet the demand of long stroke and high precision linear displacement, an inertial impact type magnetostrictive linear actuator was designed according to the principle of inchworm motion. By applying sawtooth wave signal to the exciting coil, the step-by-step accumulative displacement motion could be realized. According to the voltage law, the magnetoresistance theory and the dynamics theory, the displacement model of the system was established based on magnetic circuit model, standard square model and the J-A model. A designed prototype was tested experimentally. The experimental platform was built and the prototype was tested. The results of simulations and experiments show that the average minimum and maximum single-step displacements of linear actuators are 2.41mm and 7.49mm, respectively, and the maximum operating frequency is 60 Hz. The experimental and simulated displacement curves of the two ends of the flexure hinge basically coincide with each other. The maximum relative error between the experimental and simulated values of the output displacement is 6.48% in the range of 3 V to 9 V.

关 键 词：直线驱动器 惯性式 超磁致伸缩 步进运动 位移模型 

分 类 号：TM359[电气工程—电机]