切換式磁阻馬達(Switched Reluctance Motor, SRM)具有結構簡單、高強健性、轉矩大、成本低等優點，但本身的雙凸極結構造成轉矩漣波大、噪聲高，使得切換式磁阻馬達使用場合受到很大的限制。因其電氣、磁路上特性呈高度的非線性，大幅增加了控制難度。若能有效的抑制其轉矩漣波，便是絕佳的動力來源，深具市場發展的潛力。
本研究先分析切換式磁阻馬達漣波產生的原因，再探討馬達於不同操作條件下，繞組電流需如何訂定激磁區間，才能有較小的轉矩漣波，並提出一動態調變邏輯。接著針對SRM的電流迴路作分析，於此迴路加入疊代學習控制器抑制其非線性的電氣特性，彌補一般電流控制器無法完美追蹤電流命命令的情形。最後討論傳統定電流命令下的缺點，於速度迴路再使用一個疊代學習控制器，用以補償不足的電流命令，達到抑制轉矩漣波的效果。
本文從電流激磁區間的調變，到電流命令的規劃與追蹤，做了一套完整的控制架構，最後以實測驗證提出的控制架構具有良好的轉矩漣波抑制能力。

Switched Reluctance Motor (SRM) benefits from simple structure, robustness, large torque output and low cost; however, the double-saliency structure produces large torque ripple, noise and vibration. This limits the application of SRM. The difficulity of SRM control originates from nonlinear electrical and mechanical characteristics. On the other hand, if the torque ripple can be effectively reduced, SRM can be regarded as a great power device with marketing potential.
This research firstly analyzes the source of the torque ripple. To achieve lower torque ripple, a dynamic modulating logic is proposed, through this the excitation current is investigated against different operating conditions of motor. The current loop of SRM is studied, and an iterative learning controller is then developed to reduce its non-linear characteristics. This is superior to the traditional constant current controller while the torque output might be insufficient. The proposed controller is coupled with the iterative learning controller to compensate insufficient torque. The results show that torque is significantly reduced.
This research accomplishes a control system for current excitation modulation and current loop with its tracking. Finally an experimental study is conducted to verify the capability of torque reduction.

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