Abstract
@ 本論文提出一個雙可調度之模糊控制器，並且成功地應用在磁場導向感應馬達驅動系統之速度控制上。此一所提出的雙可調度模糊控制器，主要包含了兩個分別強調在命令速度追蹤以及負載調整兩方面特性之獨立設計的模糊控制器；有別於傳統模糊控制器的設計，在命令速度追蹤的模糊控制器設計上，經由馬達實際輸出的轉子速度訊號以及所要求的參考模式的軌跡，二者之間所產生的誤差訊號與誤差訊號變化量來激發此一速度追蹤模糊控制器；則馬達實際上的動態轉子速度響應就能夠被緊密地控制在所追蹤的模式軌跡上，達到良好的命令速度追蹤特性；同時，由於在控制器的結構上包含了另一個獨立設計的負載調整模糊控制器，使得在負載調整特性上也能夠得到良好的反應。此外，由於模糊控制器本身存在著調適的能力，因此，整個馬達控制系統受到馬達參數變化以及操作環境改變的影響十分微小。在本論文中，有關整個模糊控制器架構的設計、感應馬達系統的轉子速度動態訊號分析等，均有詳盡的說明；同時，經由電腦軟體的模擬結果來證明此架構之可行性。最後，整個模糊控制器部分的實做經由個人電腦上之軟體撰寫來完成，並以一些實做上的量測結果來驗證此控制器的有效性，證實在速度追蹤以及負載調整兩方面上，均有強韌的控制特性。In this thesis, a fuzzy two degree of freedom (2DOF) controllerand its application to the speed control of induction motordrives are presented. The proposed controller is composed oftwo fuzzy controllers which are emphasized in obtaininggood tracking and regulating responses, respectively.Unlike the conven- tional fuzzy controller, the error betweenthe outputs of a reference model and the controlled drive isused to drive the proposed fuzzy controller. It followsthat the dynamic response of rotor speed can accurate- lyfollow the trajectory produced by the reference model, andgood step load speed regulating response can also be obtainedsimultaneously owing to possess- ing two degree of freedomin structure. Moreover, since the fuzzy controller has theinherently adaptive capability, the performances of thecontrolled motor drive are rather insensitive to the parameterand ope- rating condition changes. Dynamic signal analysis aswell as the construction of fuzzy control algorithms aredescribed in detail. Having tested the perfor- mances of theproposed controller by simulations, the drive is implementedand the proposed controller is realized by software in a PCAT-80386 control computer. Some measured results are providedto further demon- strate the effectiveness of the proposed2-DOF fuzzy controller.