【摘要】 直线超声电机具有结构简单、体积重量小、精度高、响应快、不受磁场干扰以及安装气隙影响等,是近年来研究较热的一种新型直线电机。本文以计算机硬盘磁头驱动为例,分析了直线电机用于磁头驱动的特点及要求,概述了直线超声电机在磁头驱动中的应用研究现状及前景,构建了一种新型直线超声电机模型,并讨论了其应用的关键问题。更多还原

【Abstract】 Ultrasonic linear motor has become the focus of research with it’s advantages of simple structure, small volume and low weight, high precision, faster transient response, no magnetic-field interference, no air-gap separation between stator and vibrator, etc. In this paper, the linear feeding features and the requirements of linear motor for magnetic head driving are analyzed. The present situation of research and its application prospects for a new type of ultrasonic linear motor for magnetic head driving are summarized, a dynamical model of vibrator is established, and the key problems for a new ultrasonic linear motor are discussed.更多还原