臺灣博碩士論文加值系統

針對可變結構控制的應用，我們提出一個以可變結構控制為基礎的模糊控制器，藉著加入平滑參數來降低系統的顫動現象。平滑參數所產生的影響將會在文中被分析。
另一方面，本篇論文對非匹配不確定可變結構大型系統，進行穩定性的研究。這種分析和設計被應用在具有非匹配不確定藕合項的系統中。我們設計出的控制器不但可以消除顫動現象而且滿足到達條件。此外，我們另設計一種可變結構控制器能使系統達到指數穩定。根據Barbalat引理，這些控制器會迫使系統軌跡進入順滑平面上。
在論文中，我們不只將輸出回授可變結構控制器應用在非匹配大型系統，更進一步推導出新的分散式輸出回授可變結構控制器，能保證系統能於有限時間進入滑動模式，系統的回授控制只用到輸出變數而且不需要估測器。

In the variable structure control (VSC) applications, the new VSC based fuzzy controller will reduce chattering phenomenon by adding a smoothing parameter to the discontinuous control. The effect of the smoothing parameter will be analyzed.
The problem of stabilization of a class of mismatched uncertain variable structure systems is also investigated in this thesis. The analysis and design is applied to mismatched uncertain interconnected systems. We develop a new decentralized controller which can not only eliminate the chattering problem but also guarantee reaching condition. In addition, we will propose another decentralized sliding mode controller such that the mismatched uncertain interconnected system is exponentially stable. According to Barbalat Lemma, these controllers will force the state trajectory be trapped on the switching surface.
On the other hand, we develop a new output feedback sliding mode controller to mismatched uncertain interconnected systems. In order to sustain the limited hitting time, a newly decentralized sliding mode controller is derived to guarantee the existence of the sliding mode by using output feedback only. There is no estimated state required.

TABLE OF CONTENTS

Page
COVER
AUTHORIZATION LETTERS............................................................iii
ABSTRACT(CHINESE)............................................................v
ABSTRACT(ENGLISH) ..........................................................vi
ACKNOWLEDGMENT.....................................................vii
TABLE OF CONTENTS..........................................................viii
LIST OF FIGURES..............................................................x
LIST OF TABLES..............................................................xi
ABBREVIATIONS AND SYMBOLS............................................................xii
Chapter I
INTRODUTION
1.1 Motivation.......................................................1
1.2 Literature Review................................................5
1.3 Organization of This Thesis......................................7
Chapter II
DESIGN A NEW VSC BASED FUZZY CONTROLLER
2.1 Description of the System........................................9
2.2 Smoothing of Control Law........................................10
2.3 Building the Fuzzy Control......................................13
Chapter III
EXPONENTIAL STABILIZATION OF MISMATCHED UNCERTAIN INTERCONNECTED VARIABLE STRUCTURE SYSTEMS
3.1 Mismatched Uncertain Decentralized Systems Model Definition.....18
3.2 Decentralized Variable Structure Controller Design.............19
3.3 Decentralized Controller Design with Exponential Stable.........23
3.4 Simulating the Large-Scale Systems..............................26
Chapter IV
NEWLY DECENTRALIZED OUTPUT FEEDBACK SLIDING MODE CONTROL FOR MISMATCHED UNCERTAIN INTERCONNECTED SYSTEMS
4.1 Review of Output Feedback Sliding Mode Control in Matched
Uncertain Systems...............................................32
4.2 Mismatched Uncertain Decentralized Systems Mode Definition......33
4.3 Stability in the Sliding Mode...................................35
4.4 Decentralized Output Feedback Sliding Mode Controller Design....38
Chapter V
CONCLUTIONS.........................................................47
REFERENCE...........................................................48

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