本論文中的控制系統除了會接收輸入的信號外，也會接收Feed Back Signal及Parameter Setting的信號，Feed Back Signal是一組迴授信號，使系統更穩定且使馬達更精準的轉動，Parameter Setting是調整參數的信號，調整及控制馬達的輸出，達到不需使用外部線路的調整而僅使用輸入的參數設定達到控制馬達的能力，而負責將Parameter Setting輸入的設定完成馬達的調整是本文中所使用的Gain Tuning 1及Gain Tuning 2，Gain Tuning 1主要的功能是將解碼過後的信號有效地提升增益或降低增益，達到輸入信號放大或縮小的目的，而Gain Tuning 2的功能則是將輸入信號與馬達的回饋信號（經ADC轉換後的數位信號），經過比較器後所產生的差值信號，功能與Gain Tuning 1類似相同，可以調整信號的增益。另外，本論文將使用一組控制信號即能控制多組馬達的方式，達到一次控制多組馬達的功能。 Besides receiving input signal, the control system can receive feed-back signal and parameter setting signal, It can make system stably and precise to rotate with motor. Moreover, the parameter setting can adjust system coefficient that tuned and control motor output condition. And the parameter setting doesn’t need to adjust coefficient by external circuit. It just only inputs the parameter setting. In this paper, the Gain Tuning 1 and the Gain tuning 2 have the ability to tune motor setting when Parameter Setting inputs set into the Gain Tuning 1 and the Gain tuning 2. The main function of Gain Tuning 1 can boost or reduce input signal when input signal going through decode circuit. Therefore, they accomplish amplify or shrink input signal gain.Input signal and motor feedback signal both go through comparator to produce a contrast value. The Gain Tuning 2 tune signal is similar with the function of the Gain Tuning 1. The control system also used another input control signal and it will control more motors in one time by a frame signal.
