早期，巴比倫人便利用了大自然的「風」來推動風車、灌溉農田；羅馬人亦使用了風車及水車推動了「磨坊」與「鋸木廠」的機器運作。老祖先的智慧，乃在藉由動力機械裝置輔助人力和獸力，進一步取代超過人、獸力所能負荷的工作。然而在日新月異的發展之下，演變至今，機械的要求不僅僅是取代人力而已，在能源告急的今天，如何降低能源成本並提高產品附加價值已儼然成為產業界重要的議題。
　　離心泵葉輪為三維扭轉曲面，其流體沿著曲面來改變流向或改變流體速度與壓力，促使能量提昇。而干涉程度大、形狀複雜、葉片外廓建構不易、多軸加工困難與複雜的流場特性，涵蓋著流場分析與五軸加工技術；同時，其相關技術亦為國防科技發展的關鍵技術。本文有鑑於此，以創成加工理念的體積掃掠法來設計建構流體葉輪外形；由三次仿線導入有理式B仿線來建構葉片空間曲線，用以平滑葉片曲面與加工，並搭配導流葉片冀以強化流場特徵，且利用類神經網路輔以最佳化方法進行流場參數尋優，最後則考慮葉輪的型式並加入葉頂間隙作為探討，並分析加工路徑之合理性，對不合理之加工路徑作一適當的修正。

　　The Babylonian could use the wind to make the windmill work in the early stages. The Roman also used the windmill and the waterwheel to make the machines operating. The wisdom of forefather was making the mechanical device more useful to aid people’s living. Today, the machine is not only replace people work, but also save the source energy. It is the most important business to make the production more economic way.
　　The centrifugal impeller is a three-dimensional twisted surface. The energy is transformed by the change of velocity and pressure. The flow simulation and five-axial machining technology of centrifugal impellers have some hard works, such as the interference of tools, the complex form of blades, the establishment of blade, multi-axial machining, and the complicated fluid characteristics. The blade design is the key point of the defensible technology. In this thesis, the volume swept method based on the generated machining concept will be used to construct the profile of centrifugal impellers. From cubic spline, the rational B-spline is used to construct the space-curve of surface and machining of blade smoothly. We would add the splitter blade to make the smoother fluid field. The artificial neural network combined with the optimum method is used to find the best parameter of fluid field. The impeller type and tip clearance is considered to analyze the fluid flow. Finally, the machining tool path would be modifying if the path were not reasonable.

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