本論文旨在研製無轉軸偵測元件之開關式磁阻電動機驅動系統，並實際應用在洗衣機。文中首先介紹開關式磁阻電動機之結構、原理及數學模式，其次說明無轉軸偵測元件系統驅動方法。本文所提之開關式磁阻電動機轉軸角度估測法，係利用偵測定子電流之斜率估算自感，進而估測轉軸角度。
本論文將開關式磁阻電動機應用在洗衣機驅動系統，以數位信號處理器TMS320LF2407A晶片為系統核心發展軟體，並由無轉軸角度估測方法計算轉軸角度及速度，完成閉迴路控速，實測結果驗證本文所提出的方法確實可行。

The thesis studies the development of sensorless switched reluctance motor drive systems and its application in washing machines. First, the structure, basic principle and mathematical model of the switched reluctance motor are introduced. Then, the sensorless method of the drive system is discussed. The sensorless technique, which does not include rotor position sensor, is proposed by detecting the stator currents of the motor, computing the self-inductance from the current slope, and then estimating the rotor position.
This thesis proposes the switched reluctance motor applying in a washing machine system. We use a digital signal processor TMS320LF2407A as the system core and develop its software. Based on the proposed sensorless technique, a closed-loop adjustable speed system can be achieved. The experimental results validate that the proposed method is feasible and correct.

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