本文以可程式邏輯元件(Complex Programmable Logic Device, CPLD)來設計與實作一多用途數位位置轉換器，僅需少許類比電路，此數位化的解碼電路即可用來處理分解式位置感測器、光學尺或霍爾效應感測器的位置訊號，並且可以很方便地與其它數位系統整合，廣泛地應用於精密機械之定位、CNC工具機與電腦週邊如掃描器、印表機、傳真機。
於實驗驗證部分，使用這三種不同的位置感測器來實際量測機械裝置的位移，藉以驗證此多用途數位位置轉換器的可行性及可達到的性能，經實驗結果證明，此數位電路可成功的應用在這三種不同的位置感測器，並大幅提高原位置感測器的解析度。

In this thesis, the realization and verification of the multipurpose digital position converter using CPLD is presented. It represents an integrated solution in measuring the position by means of resolvers, sine/cosine optical encoders and Hall-effect sensors. The superiority of this converter is that it produces both position and velocity in digital form and the digital circuits can be easily applied to many modern applications. The external hardware required to interface between the sensors and the CPLD is limited to two A/D converters and some analog circuits. The feasibility and effectiveness of these position sensors in measuring the mechanical displacement data using the proposed digital position converter is further validated by experiments.

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