本文探討無轉軸偵測元件內藏式永磁同步電動機驅動系統的角度及速度控制。首先，擷取電動機的定子電流，並計算其電流斜率。其次，利用電流斜率估測電動機的轉軸角度。文中使用兩個積分三角類比/數位轉換器與高性能數位信號處理器，實現無轉軸偵測元件的角度及速度閉迴路控制。此外，本文採用低通濾波器來解決使用電流磁滯控制，所造成電流變化較於劇烈的問題，並利用低通濾波器的轉移函數計算出延遲相角，即時補償低通濾波器所造成的相位落後，以增加電流斜率法的準確性。
本文中使用德州儀器公司所生產的TMS320F28379D數位信號處理器，作為角度控制、速度控制、電流控制及轉軸角度估測等的運算核心。實測結果說明本文所提方法的正確性及可行性。

This thesis investigates the angle control and speed control for a sensorless interior permanent magnet synchronous motor drive system. First, the stator currents are measured. Next, the current slope of each switching state is computed. After that, the rotor position is estimated by using the current slope. Two delta-sigma A/D converters and a high- performance digital signal processor are used to implement the sensorless angle and speed control system. In addition, a low-pass filter and its phase lag compensation are developed to improve the accuracy of the current slope method.
A digital signal processor, TMS320F28379D, is used to execute the angle control, speed control, current control, and rotor position estimation. Experimental results validate the correctness and feasibility of the proposed method.

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