Title: | 量化迴授設計規格之研究 Research of Specifications in QFT Design |
Authors: | 翁志泓 Won iyh-horng 鄧清政 Ching-Cheng Teng 電控工程研究所 |
Keywords: | 量化迴授設計規格;QFT |
Issue Date: | 2000 |
Abstract: | 本論文提出時域規格轉換至頻域規格,以及頻域規格轉換至時域規格之方法,這種轉換常用於QFT之設計。本論文之研究重點係在於提出三階含雙零點(3,2)系統轉移函數模式,時域規格轉換至頻域規格以行QFT之設計工作。再加上二階系統與三階系統模式,從頻域規格轉換至時域規格設計之研究,從研究中將發現,(3,2)系統模式在行QFT設計時,的確優於(3,1)系統,且(3,1)系統優於(3,0)系統,三階系統優於二階系統。
本論文使用轉換方法,將時域規格轉換為頻域規格,有了頻域規格,QFT設計就步入正軌了,從此進行頻域領域的設計工作,最後將所設計之系統,再求取其時域響應,期能符合時域規格之要求。再者在頻域中設計頻域規格,再轉換至時域規格之時域暫態響應中,再藉由轉換得來的時域規格,在轉換至頻域響應中進行QFT之設計。
在三階含雙零點(3,2)系統模式,如選取一個零點在負實軸很遠處,則其時域與頻域規格轉換結果與三階含單零點(3,1)系統模式相同,再者選取另一個零點在負實軸很遠處,則其時域與頻域規格轉換結果與三階全極點(3,0)系統模式相同,如選取一個極點在負實軸很遠處,則其時域與頻域規格轉換結果與二階全極點(2,0)系統模式相同。由模擬結果顯示,更可加以鑑定所有推導過程與結果無誤。 A procedure is provided for transformation of time specifications in QFT design to frequency specification, The main result of the thesis is on translation of time-domain tolerances into frequency-domain tolerances by third-order model with two zero (3,2) system transfer function, We also transfer frequency-domain tolerances into equivalent time response tolerances that include second-order system and third-order system. In third-order model with two zero (3,2) system, if we choose the zero far-off on the negative real axis, the result is the same as third-order model with single zero (3,1) system, then we also choose another zero far-off on the negative real axis, the result is the same as third-order model with single zero (3,0) system. If we choose the real pole far-off on the negative real axis, the result is the same as second-order model with all poles (2,0) system. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT890591046 http://hdl.handle.net/11536/67815 |
Appears in Collections: | Thesis |