臺灣博碩士論文加值系統

本文主旨在於利用無感測器電感估測轉子位置來取代光學編碼器之位置判斷的功能，來驅動實驗所使用的四相切換式磁阻馬達，我們在驅動器的每一相間安裝不同的電流感測器，這樣可以分別得到四相不同的電流，經過計算後可以得到其個相電感值，並且用來估測出轉子的位置。在控制器的部分，我們使用了DSP做為控制器及取得系統的參數。為了實際應用所設計之低成本的系統結構，在之後能有更全面的應用。最後經由實驗結果的資料證實本文所提供的理論的可行性。

The purpose of this paper is to develop a sensorless driving mechanism for a four-phase switched reluctance motor (SRM) so as to replace the optical encoder for position information feedback. Each phase on the drive is equipped with a current sensor, with which all the phase currents can be obtained for computation of the inductance values. As the self inductances are functions of the rotor position, the motor position can be derived accordingly. We use the Digital Signal Processor (DSP) for computing the system parameters. The idea is confirmed by numerical simulations as well as by experiments.

誌謝 i
中文摘要 ii
Abstract iii
目錄 iv
圖目錄 v
符號說明 vii
第一章 緒論 1
1.1 前言 1
1.2 研究動機 1
1.3 文獻回顧 2
1.4 論文架構 3
第二章 切換式磁阻馬達簡介 4
2.1 切換式磁阻馬達結構 4
2.2 機械結構與運轉原理 5
2.3 電感模型 8
2.4 數學模型 9
第三章 驅動器電路設計 15
3.1 驅動器設計 15
3.2 感測器 20
3.2.1 電流感測器 20
3.2.2 光學編碼器 21
第四章 無感測電感估測系統 23
4.1 無感測電感系統簡介 23
4.2 無感測電感估測 24
第五章 實驗結果 28
5.1 系統架構 28
5.2 Digital Signal Processor(DSP) 30
5.3 實驗結果 31
第六章 結論 42
6.1 結論 42
6.2 未來工作 42
參考文獻 43

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