本研究介紹了使用NC機床進行自動螺旋槳葉片校正的專家系統的開發。採用有限元方法對螺旋槳葉片進行分析，可以建立葉片不同位置的塑性變形和位移之間的關係。通過推導各點的位移/變形方程和相鄰變形效應，為實現目標，一套最佳化方法被接續採用。

在最初的實驗中，校正了兩個葉片以驗證系統的預測能力。結果表明，預測誤差與實際誤差非常吻合，由於校正後的葉片回彈效應，最高偏差約為0.15mm。降低NC機床產生的指定位移值，可導致變形吻合偏離量測值。

隨後，一批12個螺旋槳葉片按照預定義的約束條件進行三輪校正過程。校正結果符合0-0.5mm的理想公差範圍，確保符合製造質量標準。

實驗證明，螺旋槳校正專家系統在減少人力成本方面是可靠和有效的，同時可確保校正的準確性。本系統內的知識庫便於輕鬆複製和功能，機器操作員不須具備太多經驗。這項研究的結果有助於提升螺旋槳葉片校正過程的自動化技術，提高製造效率和品質控制。

This research presents the development of an expert system for autonomous propeller blade correction using an NC machine. The propeller blades are analyzed by finite element method, allowing the establishment of the relationship between plastic deformation and displacement on different positions of the blade. By deriving the displacement-deformation equation for each point and neighboring deformation effect, an optimization approach based on the goal attainment method is applied.
In the initial experiment, two blades are corrected to validate the system's predictive capabilities. The results show a close match between the predicted and actual errors, with the highest deviation of approximate 0.15mm due to springback effects in the correcting machine. The designated displacement generated by the NC machine is assigned, resulting in correct deformation that deviates from the predicted values.
Subsequently, a batch of 12 propeller blades is subjected to the correction process within three rounds as per the predefined constraints. The obtained results meet the desired tolerance range of 0-0.5mm, ensuring compliance with the manufacturing quality standards.
The propeller correction expert system proves to be reliable and effective in reducing human effort and costs while ensuring the accuracy of corrections. The knowledge base within the system facilitates easy duplication and functionality, regardless of the machine operator. The findings from this research contribute to the automation of propeller blade correction processes, improving manufacturing efficiency and quality control.

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