摘 要
近年來，電力電子技術(shù)、微處理器技術(shù)以及異步電機矢量控制理論的發(fā)展，極大的促進(jìn)了異步電機控制技術(shù)的發(fā)展。作為現(xiàn)代工業(yè)中不可缺少的動力裝置，異步電動機的智能控制方法及其高性能的控制器已成為該領(lǐng)域研究的發(fā)展趨勢。在此背景下，本課題研究了基于TMS320F2812的異步電動機矢量控制系統(tǒng)，研究結(jié)果對交流變頻調(diào)速具有一定的參考及實用價值。
本文首先介紹了交流調(diào)速及其相關(guān)技術(shù)的發(fā)展概況，通過分析異步電動機在不同坐標(biāo)系下的數(shù)學(xué)模型，詳細(xì)闡述了矢量控制系統(tǒng)的基本原理及SVPWM的原理。并在MATLAB/Simulink環(huán)境下完成了異步電動機矢量控制系統(tǒng)的建模及其仿真研究。為了提高轉(zhuǎn)速性能，本文將傳統(tǒng)的轉(zhuǎn)速PI控制器設(shè)計為模糊自適應(yīng)PI控制器。通過仿真實驗，驗證了模糊自適應(yīng)PI控制具有減小轉(zhuǎn)速超調(diào)量，提高穩(wěn)態(tài)精度的優(yōu)點。
在仿真研究的基礎(chǔ)上，完成了異步電動機矢量控制系統(tǒng)的軟硬件設(shè)計。硬件部分主要包括交-直-交型的功率主電路、驅(qū)動電路和以TMS320F2812為核心的控制電路。軟件部分在CCS3.3平臺上采用C語言編寫，主要包括主程序和中斷服務(wù)程序的設(shè)計，其中矢量控制的相關(guān)算法都在中斷服務(wù)程序中完成。
最后，在設(shè)計的硬件平臺上進(jìn)行了異步電動機程序的調(diào)試，通過實驗結(jié)果的分析，可以看出本文所設(shè)計的控制方案滿足高性能電機調(diào)速系統(tǒng)的要求。




關(guān)鍵詞 異步電動機；模糊自適應(yīng)PI；矢量控制；SVPWM；TMS320F2812


































Abstract
In recent years, the development of power electronics, micro-processor and the appearance of the vector control theory for asynchronous motor have resulted in the rapid development of asynchronous motor control technology. As a kind of indispensable power equipment in modern industry, asynchronous motor has intelligent control methods and high-performance controller which have become the development trend of researches in this area. Under the background, the thesis studied the asynchronous motor vector control system which is based on TMS320F2812. The study results have certain reference and practical value for AC variable frequency speed regulation.
Firstly, in this thesis, the development of AC speed regulating and its related technologies were reviewed. And, through the analysis of asynchronous motor’s mathematics models in different coordinate, it elaborated the basic principle of vector control system and the space vector pulse width modulation (SVPWM). In addition, the system was modeled and simulated under Matlab/Simulink software environment. In order to improve the characteristics of rotating speed, instead of traditional PI controller, the thesis designed the fuzzy self-adjusting PI controller. The results of simulation experiment validated that the method of fuzzy self-adjusting PI control has the advantages of reducing speed overshoot and improving the static precision.
Secondly, based on the simulation, it completed the design of software and hardware of asynchronous motor vector control system. Hardware mainly included AC-DC-AC power circuit, its drive circuit and control circuit with a core of TMS320F2812. Software depended on CCS3.3 platform, using C language, mainly including main program and interrupt service program design, and the vector control algorithms were realized in the interrupt service program.
Finally, asynchronous motor was debugged on the hardware design platform. According to the analysis of experiment results, it can be seen that the control scheme can be satisfied the requirements of high-performance motor speed regulation system.


Key words Asynchronous motor; Self-adjusting PI controller; Vector control; SVPWM; TMS320F2812













目 錄
摘 要 I
Abstract II
第1章 緒論 1
1.1 研究目的和意義 1
1.2 交流調(diào)速的發(fā)展概況 1
1.2.1 電力電子器件的發(fā)展 1
1.2.2 PWM調(diào)制技術(shù)的發(fā)展 2
1.2.3 微處理器與數(shù)字控制技術(shù)的發(fā)展 3
1.2.4 交流電機控制策略的發(fā)展 3
1.2.5 仿真技術(shù)在交流調(diào)速系統(tǒng)中的應(yīng)用 4
1.3 論文研究的主要內(nèi)容及結(jié)構(gòu)安排 5
第2章 異步電動機矢量控制的原理 6
2.1 引言 6
2.2 異步電動機的數(shù)學(xué)模型 6
2.2.1 三相異步電動機在三相靜止坐標(biāo)系中的數(shù)學(xué)模型 6
2.2.2 三相異步電動機在兩相靜止坐標(biāo)系下的數(shù)學(xué)模型 8
2.2.3 三相異步電動機在兩相同步旋轉(zhuǎn)坐標(biāo)系下的數(shù)學(xué)模型 10
2.3 異步電動機矢量控制基本原理及方案選擇 11
2.3.1 異步電動機矢量控制基本思路 11
2.3.2 異步電動機矢量控制方案選擇 12
2.3.3 本文所選方案介紹 13
2.4 電壓空間矢量脈寬調(diào)制技術(shù) 14
2.4.1 電壓矢量與磁鏈?zhǔn)噶康年P(guān)系 14
2.4.2 基本電壓空間矢量 15
2.4.3 磁鏈軌跡的控制 18
2.5 空間電壓矢量的算法實現(xiàn) 19
2.6 本章小結(jié) 21
第3章 模糊控制理論及其在電動機控制中的應(yīng)用 22
3.1 引言 22
3.2 PI控制算法 22
3.3 模糊控制的基本理論 23
3.4 模糊自適應(yīng)PI控制器的設(shè)計 25
3.5 模糊自適應(yīng)PI控制器的仿真 27
3.6 本章小結(jié) 29
第4章 系統(tǒng)的仿真研究 30
4.1 引言 30
4.2 仿真環(huán)境介紹 30
4.3 異步電機矢量控制系統(tǒng)仿真模型建立 30
4.3.1 坐標(biāo)變換模塊 31
4.3.2 磁鏈觀測模塊 32
4.3.3 SVPWM仿真模塊 32
4.3.4 電流滯環(huán)PWM仿真模塊 35
4.4 系統(tǒng)仿真結(jié)果及分析 36
4.5 本章小結(jié) 39
第5章 系統(tǒng)的硬件設(shè)計 40
5.1 系統(tǒng)設(shè)..