未來工業加工除了要求高解析度定位外，亦追求低成本之量測系統。以現有之精密儀器來說，常見的定位方式主要分為磁性編碼器與光學編碼器兩種，其感測原理都是使用二進位編碼做為定位來源，區別在於使用之基材與編碼製程的差異。光學編碼器精度較高，但對工作環境要求也相對高且價格偏貴，相比於價格低且工作環境容忍度高之磁性編碼器來說，在工業應用上佔有相當大的優勢。因此本研究希望透過磁性編碼器，開發出一套具有高解析度、符合工業規格且能夠應用於工具機高轉速馬達之位移量測系統，以因應智慧機械化的需求。
本論文所要研究的新型旋轉磁性編碼器，是於基材表面磁化出數條等間距之磁極，透過不同之充磁方式與磁極排列方式，使編碼器應用層面更加多元。有別於以往的電磁鐵充磁，本研究改以永久磁鐵做為充磁元件；所提出之特殊的磁極編碼方式與所開發之量測系統，能即時判斷主軸偏擺量與位移程度。本文藉由充磁機構、實驗參數設計與分析，提升主軸旋轉時位移訊號的穩定性，並驗證此新型旋轉磁性編碼器應用於工具機之可行性。

In the existing precision instruments, positioning methods are mainly divided into two types: magnetic encoder and optical encoder. Both types of positioning method utilize binary coding and the only differences are the material substrate and encoding process. Optical encoders have higher precision when compared to that of magnetic encoders. However, it demands higher requirement in working environment and cost. On the other hand, magnetic encoder has the advantage of lower cost and excellent in dirt immunity. Therefore, this research is aimed at development a displacement measurement system with high-resolution that can be used in high-speed spinning shaft in machine tools.
The proposed rotary magnetic encoder in this work is magnetized with various arrangements of uniform magnetic poles. Through different methods of magnetization and magnetic pole arrangement, it allows magnetic encoders to be more diverse and favorable in different applications. Compared to commonly found magnetization process, the proposed magnetization process uses a permanent magnet as the magnetizing source. Furthermore, with the use of special magnetic pole coding pattern in the development at the measurement system, the shaft’s displacement in both linear and radial directions can be determined. Through this research the feasibility of the proposed new type rotary magnetic encoder is validated.

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