毕业设计论文-交流永磁直线电机及其伺服控制系统的设计.doc

摘要
直线电机在各行各业中发挥着越来越重要的作用,特别是在机床进给驱动系统中。本文以平板式交流永磁同步直线电机为研究对象,从电机机体到伺服驱动系统的软、硬件设计作了深入研究。
本文首先介绍了交流永磁同步直线电机机体设计过程中电枢绕组、铝芯和定子磁钢的设计和改进方法,较大程度上减小了推力波动,并且结合大推力直线电机的特点设计了方便有效的装配过程。
建立交流永磁同步直线电机的数学模型,在此基础上分析了当今最通用的伺服控制策略,选择了矢量控制方法。确定的矢量控制实现形式。通过SVPWM方法进行脉宽调制,合成三相正弦波。选用TI公司2000系列最新DSP TMS320F2812,深入研究了以上算法在DSP中的实现形式。采用了C语言和汇编语言混合编程的实现方法。在功率放大装置中,以智能功率模块IPM为核心,设计了功率伺服驱动系统。还包括电流采样、光电隔离、过压欠压保护和电源模块等。
由于知识和能力的限制,本次课题只对直线电机做一些理论研究。
关键词:永磁同步直线电机 DSP SVPWM 矢量控制
Abstract
Line motors are playing a more and more important role in all kinds of trade, especially in machine tool feed system. We carry out our study in motor , software and hardware servo system based on flat AC permanent synchronous linear motor(PMSLM).
First introduce the design method of armature ,core of al and which can minish the thrust ripples, then introduce the means of assembly base on high thrust permanent synchronous motors.
To ensure the accuracy to a high requirements and get a wide speed range, we choose the dsp of Texas Instruments named TMS320F2812 which is the core of the servo system .In the paper we set up mathematical model of PMSLM, then analyse the current control strategies and choose the vector control method which is realized by the method of .The three phase sine wave pounded by space voltage pulse width modulation(SVPWM).The arithmetic realized by C language and assembly language in DSP. Intelligent Power Model (IPM) is the core of the power amplification circuit system which also contains current sampling circuit, photoelectric-isolation circuits, over-voltage protection circuits, under-voltage protection circuits and power supply.
As a result of the knowledge and ability limit, this topic only does a fundamental research to the linear motor.
Key words: permanent synchronous linear motor(PMSLM), DSP, SVPWM, vector control
目录
摘要中文 I
英文...............................................................................................................................II
第一章绪论 1