Fuzzy pid based Temperature Control of Electric Furnace for Glass Tempering Process
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TABLE OF CONTENTS
Contents page DECLARATION ................................................................................................................................................ i ACKNOWLEDGMENTS .................................................................................................................................. ii LIST OF ABBREVIATIONS ............................................................................................................................... v LIST OF TABLES ............................................................................................................................................. vi LIST OF FIGURES .......................................................................................................................................... vii LIST OF APPENDIXES .................................................................................................................................. viii ABSTRACT ..................................................................................................................................................... ix CHAPTER ONE ............................................................................................................................................... 1 INTRODUCTION ............................................................................................................................................. 1 1.1 Background ................................................................................................................................... 1 1.2 Statement of the problem ............................................................................................................ 3 1.3 Relevance and scope of the Thesis ............................................................................................... 3 1.4 Objective of the thesis .................................................................................................................. 4 1.4.1 General objective .................................................................................................................. 4 1.4.2 Specific objective .................................................................................................................. 4 1.5 Outline of the thesis ...................................................................................................................... 4 CHAPTER TWO .............................................................................................................................................. 5 2 LITERATURE REVIEW ............................................................................................................................. 5 2.1 Introduction glass Tempering Process .......................................................................................... 5 2.1.1 History of Tempered Glass .................................................................................................... 5 2.1.2 Tempering process ................................................................................................................ 6 2.1.3 Glass properties .................................................................................................................... 7 2.2 Resistance Heating and Melting furnace ...................................................................................... 9 2.2.1 Direct resistance heating furnace ......................................................................................... 9 2.2.2 Indirect resistance heating furnace .................................................................................... 10 2.3 Temperature control systems of resistance electric furnace ..................................................... 10 2.3.1 PID Controller ...................................................................................................................... 10 2.3.2 Fuzzy logic controller .......................................................................................................... 13 2.4 Related works ............................................................................................................................. 22 iv CHAPTER THREE .......................................................................................................................................... 24 3 MATERIALS AND METHODS ................................................................................................................ 24 3.1 Modeling of glass tempering process ......................................................................................... 24 3.1.1 Modeling of electric furnace ............................................................................................... 25 3.1.2 Modeling of temperature sensor ........................................................................................ 31 3.2 Design and analysis of control system ........................................................................................ 33 3.2.1 Design and analysis of PID .................................................................................................. 33 3.2.2 Simulink model for pid controller ....................................................................................... 39 3.2.3 Modeling and Analysis of fuzzy PID controller .................................................................... 40 3.2.4 Digital controller ................................................................................................................. 47 3.2.5 Simulink model of overall system ....................................................................................... 52 CHAPTER FOUR ........................................................................................................................................... 54 4 SIMULATION RESULTS AND DISCUSSIONS .......................................................................................... 54 4.1. Simulation of PID controller ............................................................................................................. 54 4.1.1 Comparison of different PID tuning mechanisms ............................................................... 56 4.2 Simulation result of PID and fuzzy PID Simulink model .............................................................. 57 4.2.1 Comparison of PID and FPID controller mechanisms ......................................................... 58 CHAPTER FIVE ............................................................................................................................................. 63 5 CONCLUSIONS AND RECOMMENDATIONS ......................................................................................... 63 5.1 Conclusion ................................................................................................................................... 63 5.2 Recommendation ........................................................................................................................ 64 6 REFERENCES ........................................................................................................................................ 65 7 APPENDICES ........................................................................................................................................ 69 |
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