本文探討無轉軸偵測元件內藏式永磁同步電動機定位系統的研製。首先以高頻電壓注入d-軸。其次，量測d-q軸的高頻電流進一步估測電動機的轉軸位置。並且以12位元的類比/數位轉換器實現無轉軸偵測元件的定位控制。此外，本文提出新的補償方法以改善因互感現象而造成的角度估測誤差。透過量測與互感有關的耦合因子，探討一種新的補償方法，以期減少互感效應的影響。本文使用德州儀器公司所生產的TMS320F2808數位信號處理器，作為執行位置控制、速度控制、電流控制及角度估測等。實測結果說明本文所提方法的正確性及可行性。

The thesis investigates a sensorless interior permanent magnet synchronous motor position control system. First, a high frequency voltage is injected into the d-axis. Next, the d-axis and q-axis high frequency currents are measured to estimate the rotor position of the sensorless motor. Two 12-bit analog to digital converters are used to implement the position control system. Moreover, a new compensation method is proposed to improve the rotor estimation error due to the influence of the mutual inductance. By measuring the coupling coefficients, a new compensation method is used to reduce the influence of the mutual inductance.The low resolution A/D converters with a digital signal processor,TMS320F2808, are employed to execute the position control,velocity control, current control, and rotor position estimation.Experimental results validate the correctness and feasibility of the proposed sensorless position control system.

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