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研究生:吳銘賢
研究生(外文):Ming-Hsien Wu
論文名稱:PC-Based控制器於智慧型溫度控制之研究
論文名稱(外文):A Study of Intelligent Temperature Control Using PC-Based Controller
指導教授:林志民林志民引用關係
學位類別:碩士
校院名稱:元智大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:英文
論文頁數:56
中文關鍵詞:模糊控制溫度控制
外文關鍵詞:fuzzy controltemperature control
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在傳統的控制方法中,我們必須求得系統的數學式和線性化模型之後,才能設計控制器,但是在一些比較複雜的系統中,卻是不容易取得的,也因為如此,控制器變得不容易設計或者是設計的結果不佳。
本文提出了「模糊控制結合PC-Based 」的方法,利用模糊控制去解決溫度系統的非線性、不容易定義、時變還有複雜的狀態,並且更有彈性的來處理其變化。 而PC-based 的控制應用在很多的地方,例如自動化控制、信號分析與測量。另一方面要得到即時的系統狀態,人機介面的設計變得相當重要,一般來說,人機介面可以利用軟體Visual Basic、Visual C++ 或 Labview來達成,讓使用者可以即時監控且記錄系統的狀態,在本文中便以Visual Basic 來進行。
在實際的實驗後,使用模糊控制在溫度系統的恆溫效果比傳統的ON/OFF控制及PID控制來得好,另外在抗干擾能力上,我們也可驗證出模糊控制器的彈性及穩定性特色。
In classical control theory, the controller design needs to know the mathematical description and linearized model of the system, but it is not easy to get those models in some complex control systems. Because of these reasons, the controller is not easy to design or the design performance is unsatisfactory. In this thesis, a PC-based fuzzy temperature control system is proposed. Using fuzzy theory to deal with temperature control has the flexibility to handle the change of temperature. PC-based systems have been widely used in many application domains, such as automation control systems, signal analysis and measurement. In order to obtain real time production information, the human machine interface (HMI) has become more important. Specific software can be used to achieve particular function in a PC-based system, such as Visual Basic, Visual C++, or Labview. The Visual Basic approach is used in this thesis. The HMI interface also allows the operator to maintain the machine easily so that any problem can be identified real time. Based on the results of experiments where the temperature is constant, ON/OFF and PID controllers can not manage the temperature well if there are external disturbances in the plant, but the fuzzy controller can achieve excellent result in this aspect.
書頁名i
論文口試委員審定書 ii
摘要iii
Abstract iv
誌謝 v
Contents vi
List of Figures vi
List of Tables xi
Nomenclature xii
Chapter 1 Introduction 1
1.1 General Remarks and Overview of Previous Work 1
1.2 Motivation and Contribution of This Thesis 2
1.3 Scope and Organization of This Thesis4
Chapter 2 Fuzzy Logic Control Theory 5
2.1 Overview 5
2.2 Fuzzy Logic Controller 5
2.2.1 Fuzzification 7
2.2.2 Knowledge Base 8
2.2.3 Decision Making Logic 9
2.2.4 Defuzzification 11
2.3 Summary 14
Chapter 3 The Architecture of Temperature Control 15
3.1 Overview 15
3.2 System Configuration 15
3.2.1 I/O Expansion Unit 17
3.2.2 Temperature Measurement Unit 18
3.2.3 Switching Unit 22
3.2.4 Data Converter 25
3.2.5 Heater and Sensor 27
3.3 Experiment Hardware 30
3.4 Summary 31
Chapter 4 Temperature Controller Design 32
4.1 Overview 32
4.2 ON/OFF Controller Design 33
4.3 PID Controller Design 35
4.4 Fuzzy Controller Design 38
4.4.1 Membership Function of Input and Output 39
4.4.2 The Rule Base of Fuzzy Controller 41
4.4.3 The Flow Chart of Software Design 43
4.5 PWM Control 46
4.6 Experiment Result 46
4.6.1 The Temperature Control 47
4.6.2 The Temperature Control with Disturbance 49
4.7 Summary 51
Chapter 5 Conclusions and Suggestions for Future Research 53
5.1 Conclusions 53
5.2 Suggestions for Future Research 54
Reference 55
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[14]祁亨忠,“自組織模糊控制器設計及其應用,”元智大學電機工程研究所論文, 1997.
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