隨著電腦科技的快速發展，消費者對於資訊產品的需求亦快速增加，如儲存裝置、行動電話、數位助理及筆記型電腦等，而產品的發展需求均朝向輕薄化的趨勢。在新的資訊產品的開發過程中，馬達為最主要的動力源，是影響產品輕薄化的關鍵技術之ㄧ，研發高速之薄型馬達設計具有其重要性。本研究整合馬達相關基礎學理，發展具高轉速之薄型永磁無刷馬達（厚度小於3mm），採用軸向磁通型馬達設計，達到馬達輕薄化的目的，並提出兩種新型繞組製程設計，分別為軟性印刷電路繞組及微電鑄繞組，此有異於傳統馬達的繞線式繞組，可有效縮小馬達尺寸並增加馬達量化製程上的彈性。

本論文整合遺傳演算法與磁路分析方法，提出馬達最佳設計流程，可在空間限制條件下，搜尋滿足設計目標的馬達尺寸參數，並提升分析時效，有效節省馬達設計時程。本研究利用所提的最佳化設計流程，成功應用於軸向磁通型結構的高速薄型馬達設計及原型機製作，所開發之薄型馬達原型機無載轉速可達兩萬轉以上，製程中結合軟性印刷電路板技術，實現特殊的箏形繞組設計，可降低馬達繞組的銅損。此外，亦應用微電鑄技術達成薄型馬達線圈繞組開發，該技術更可增加製程量化上的彈性，深具薄型馬達未來之量產應用潛力。最後，避免因耦合器連接造成薄型馬達偏心或是軸承安裝上的問題，配合三相驅動IC電路，提出無需耦合器的反電動勢量測方法，以及馬達特性曲線的間接量測方法。

As the trend toward compact sizes in 3C (computer, communication and consumer) electronic products, the required motor drives in these applications need to be downsized with increased power densities. It appears that the winding of motors is the most awkward part to be scaled down from conventional motor design when miniaturizing. Hence, this thesis mainly presents an optimal motor design procedure to develop a slim-type and high-speed axial-flux motor. The motor design applies two winding fabrications, which are flexible printed circuit board winding (FPCBW) and micro-electroformed winding (MEW). Both of them represent an ultra-thin electromagnetic exciting source where coils could be design as any shape in order to improve the motor performance.

The proposed design procedure integrated with the genetic algorithm (GA) and magnetic circuit analysis, which could calculate the related motor parameters effectively. According to the procedure, a slim-type and high-speed axial-flux motor is designed and prototyped. The prototype uses rhomboidal PCBW to reduce the end-winding length and minimize the copper loss. In addition, the prototype of MEW is fabricated and shows the effectiveness of the micro-electroforming procedure for the development of slim-type motors.

At last, a commercially available motor drive IC can be effectively adapted to make the motor work at higher speed, and excellent agreement is found between simulation and measurement. This thesis also proposed the technique to measure the back-EMF waveform without any coupling, and an indirect method to determine torque-speed characteristic curve for the motor. These would avoid the mechanical destruction from coupling. Experimental results also indicated that the slim-type motor can be effectively adapted to work in 3C electronic products, giving it some promising applications.

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