论文初稿宋小齐.doc

本 科 毕 业 论 文 磁通切换直线电机矢量控制系统设计 The system design of Linear Flux-switching motor based on vector control 学院名称： 京江学院 专业班级： J自动化1102 学生姓名： 宋小齐 指导教师姓名： 杜怿 指导教师职称： 教授 2015年 6月城市交通直线电机在领域的应用也得到了广泛关注。本文研究一种磁通切换直线电机，初级动子永磁体和电枢绕组，而次级长定子结构简单，仅由导磁铁芯组成。因此，该电机可降低成本永磁同步直线电机功率密度高和直线感应电机定子结构简单的点，轨道交通等长定子场合。传统的直线驱动装置是由旋转电机加滚珠丝杠，自动控制技术与微型计算机发展，对自动控制系统的控制精度提出了高的要求，显然传统的方式已经无法满足现代控制系统的求，因此研究直线电机的矢量控制系统具有现实的意义。直线电机中间转换环节直接产生直线运动，在气隙磁场中直接产生动力，可获比传统驱动机构高几倍的定位精度和响应速度。本文对磁通切换永磁直线电机性能进行了较为全面的研究，搭建了驱动控制系统平台，并进行了仿真和实验，验证了磁通切换永磁直线电机及其驱动控制系统具有良好的性能，为实际的直线电机控制系统提供了参考和依据。 首先，介绍了磁通切换永磁直线电机的基本结构，并建立了电机的数学模型，分别测试了电机的电势、电流等基本特性，分析了矢量控制方法在直线电机应用的可行性。 其次，基于 Matlab/Simulink 仿真软件建立了该电机的数学模型及其驱动系统模型，并进行了原理验证，对电机的矢量控制进行了仿真研究。关键词：轨道交通；磁通切换直线电机 ；矢量控制 The system design of Linear Flux-switching motor based on vector control Abstract With the rapid development of science and technology ,the progress of modernization and urban rail transit,linear motor has attracted much more attention in transit area. In this paper, a linear flux-switching permanent magnet (LFSPM) motor is presented, in which both permanent magnet and armature windings are located in the short primary mover, while the long stator is only made of iron core, and the structure is simple. Hence, the motor incorporates both the high power density of permanent synchronous linear motor and the simple structure of induction linear motor, which is perfectly suitable for long stator application, such as urban rail transit, resulting in considerable reduction of system cost due to its simple and cheap stator. The conventional linear driving device is provided by the rotary motor plus ball screw. With the rapid development of automatic control technology and microcomputer, a higher demand for control accuracy of the automatic control system is put forward. Obviously, the traditional way has been unable to meet the modern control syste