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毕业设计 电磁轴承数字控制系统的设计与研究，共74页，25210
目录
目录.............................................................................................................................. ............I
摘要.......................................................................................................................................... III
ABSTRACT....................................................................................... .. ............................ ... ...IV
第一章绪论............................. .................................................................................................1
1.1磁轴承概述.. ...... ............ ........... ............ ......... ..................... ...............................1
1.1.1磁轴承的分类和工作原理.，.............................................................. ... . 1
1.1.2电磁轴承的发展历史和研究现状.......................................................... ... 2
1.1.3电磁轴承的特点和工业应用.................................................................. ... 5
1.2电磁轴承数字控制系统概述............................................................................. ... ..6
1.2.1电磁轴承数字控制系统的组成......................................................... ... ... .6
1.2.2开关功率放大器................................................................................... ... ...7
1.2.3数字控制器.................... ............. ................................... ... ... ... ... ... ... ... .8
1.3论文工作和内容安排.......................................................................... ... ... ............10
1.3.1本文所做的工作......................... ............... ............... ............... ................ .10
1.3.2论文内容安排…................................................................................... ... ....11
第二章电磁轴承系统的数学模型........................................................................................ ... .12
2.1电磁轴承系统的数学模型....................................................... ... ... ... ... ... ... ... ....12
2.1.1五自由度电磁轴承系统的基本结构............................................. ... .......... 12
2.1.2单自由度电磁轴承的数学模型…....................................................... ... .....13
2.2单自由度电磁轴承系统的仿真....................................................................... ... ...19
2.2.1仿真条件.............................................................. ... ... ... ... ... ... ... ... ... ... ..19
2.2.2仿真结果......................................................................................... ... .......... 20
2.3本章小节........................................................................................................ ... ...... 22
第三章开关功率放大器的设计与研究........................................................................ ... .........23
3.1开关功率放大器............................................................................................ ... ...... 23
3.1.1开关功放原理..................................................................................... ... ...... 23
3.1.2开关功放主电路的拓扑结构......................................................... ... .......... 24
3.1.3电压一电流型开关功放控制策略及实现方式............................. ... .......... 26
3.1.4开关功放性能参数............................................................................ ... ....... 29
3.2三电平PWM电压一电流型开关功率放大器的设计与研究................ ... ........... 31 3.2.1三电平PWM功放原理...................................................................... ... .....32
3.2.2三电平PWM功放电路...................................................... ... ... ... ............36
3.2.3三电平PWM功放性能仿真.................................................. ... ... .............39
3.2.4三电平PWM功放实验测试，............................................. ... ... ... ...........41
3.3本章小节.................................... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .........44
第四章数字控制器的设计与研究............................................................................ ... ... ... ... ...45
4.1数字控制器硬件选择.................................................................. ... ... ... ... ... ...........45
4.1.1处理器的选择.............................................................................. ... ............. 45
4.1.2 DSP型号的选择................................................................................ ... ....... 46
4.1.3 TMS320F240的特点概述................................................................ ... ........ 47
4.2数字控制器硬件设计.................................................................................. ... ........ .. 47
4.2.1 DSP硬件电路结构....................................................................... ... ... ......... 47
4.2.2信号调理电路........................................................................................ 49
4.2.3 A/D采样电路........................................................................................ 49
4.2.4 D/A转换电路........................................................................................ 51
4.2.5存储器扩展及串行通信接口................................................................ 52
4.3数字控制器软件设计..................................................................... ... ... ... ......53
4.3.1 PID控制策略......................................................................................... 54
4.3.2数字PID控制器的设计........... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... 55
4.3.3数字控制器的软件流程........................................................................ 58
4.4上位机在线调试软件设计.............................................. ... ... ... ... ..................61
4.5本章小节........................................................................................................... .62
第五章系统集成和系统调试...............................................................................................63
5.1系统集成........................................................................................................... .63
5.1.1系统集成方案........................................................................ ... ... ... ... ..63
5.1.2系统抗干扰.................................................................................... ... ......63
5.2系统软硬件调试..................................................................... ... ........................65
5.2.1系统调试方案.............................................. ... ... ... ... ... ... ....................65
5.2.2数字控制器软件调试.，............................. ... ... ... ... ............................66
5.2.3上位机软件调试................................................... ... ...... ........................66
5.2.4采样频率的选择和PID参数整定..................... ... .................................66
5.2.5数字控制器硬件调试.......................................... ... ... ... ... ... ... ............ 67
5.3系统综合调试结果........................................................................................... ...67
5.3.1单自由度测试........................................................................................ .. 67
5.3.2两自由度测试........................................................................................ ...68
5.3.3四自由度悬浮测试....................