臺灣博碩士論文加值系統

在現今的直流無刷馬達應用中，會採用無位置感測控制降低生產成本，由於無位置感測控制在啟動運轉會發生逆轉現象，有些應用產品不允許此現象發生。為了避免馬達啟動時的逆轉現象，利用起始位置偵測轉子位置是有必要的。本文進行轉子起始位置偵測，利用各相電流峰值差進行判斷，隨後使馬達啟動運轉，即可克服逆轉現象。馬達順向啟動後，利用順滑模式控制(Sliding Mode Control)進行吊扇馬達無位置感測控制，最後利用實作結果進行無位置感測控制與起始位置偵測的驗證。

BDCM position sensorless control is common in the low-cost applications. When the motor starts, the motor may run in the reverse direction. Some applications don’t allow this condition. We need to find initial position of rotor. In this thesis the initial rotor position is estimated by the current peak differences. By this method, we can start motor in clock wise direction. This paper uses sliding mode control to implement position sensorless control for ceiling fan motor. All the control are implemented and verified. The provided results are also explained.

摘要 I
Abstract II
第一章 緒論 1
1.1 研究背景與發展現況 1
1.2 文獻回顧 2
1.3 研究目的 3
1.4 本文架構 4
第二章 三相直流無刷馬達模型 5
2.1三相直流無刷馬達介紹 5
2.2三相直流無刷馬達數學方程式[13] 11
2.2.1三相二極直流無刷馬達參數及方程式推導 11
2.2.2座標軸轉換 17
2.2.3三相P極直流無刷馬達參數及方程式 21
第三章 三相直流無刷馬達無位置感測控制 25
3.1起始位置偵測[4]-[7] 26
3.2無位置感測啟動策略 42
3.3無位置感測方程式推演[10]-[12] 45
3.3.1 擴展感應電壓 45
3.3.2 順滑模式電流估測方程式 46
第四章 實作電路 50
4.1電路架構 50
4.1.1電源電路 52
4.1.2電流感測電路 53
4.1.3數位轉類比電路 53
4.2三相直流無刷馬達無位置感測實作 54
第五章 結論 60
參考文獻 61

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