臺灣博碩士論文加值系統

在本論文中，我們針對感應式電子鍋設計功率線路。這是共振型換能器一種特殊的應用。主要的功率線路包括LC共振器，共振時序控制器，溫度曲線產生器，以及溫度控制器。電感L纏繞在電鍋的較底部使得渦流可以均勻地分佈在內鍋周圍。均勻的渦流可產生均勻的溫度分佈。針對共振型換能器設計的時序控制器是為了產生需求的振盪電流振幅。我們也使用了功因修正器來改善功率因素。溫度控制器具有自我調整的能力。我們也建立了simulink的電鍋模型且設計自我調整控制器控制電鍋的溫度。我們的模擬結果顯示電鍋模型與實際的電鍋有非常相近的響應。我們的自調整控制器也能夠在溫度追蹤上工作良好。大部份的硬體已經建構起來，而控制器用FLEX10K20RC240來設計。

In this thesis, we propose a design of power circuit for an induction cooker. This is a special application of resonant converter. The main power circuit contains a LC power oscillator, an oscillating timing controller, a temperature curve generator, and a temperature controller. The inductor L is wound around the lower part of the cooking pot so that the eddy current can be uniformly induced around the pot. The uniform eddy current produces uniform temperature distribution. A timing controller of the resonant converter is designed to produce desired amplitude of oscillation current. A power factor corrector is also applied to improve the power factor. The temperature controller has self-adjusting capability. We have also build up a simulink model of the electric cooker and design the self-adjusting controller to control the temperature of the cooker. Our simulation results have shown that the cooker model has the similar heating response as the real one. Our self-adjusting controller can also work very well for the temperature tracking. Most of the hardware has been set up. The controllers are designed by using FLEX10K20RC240.

目錄
中文摘要 I
英文摘要 II
致謝 III
目錄 IV
表格 VIII
圖例 IX
第一章 緒論 1
1.1 研究動機及方法…………..….…………………………1
1.2 論文架構…….………………………..…………………2
第二章 模糊控制器技術回顧 3
2.1 模糊理論………………………………..……………….3
2.1.1 真實世界的模糊現象……..……………………4
2.1.2 模糊集合………..………………………………4
2.2 模糊控制系統…………………………………………...5
2.2.1 模糊推論………………….…………………….6
2.3 應用模糊控制的電子鍋………………………………9
2.3.1 炊飯控制………………………………………9
2.3.2 模糊控制方式……….……………………….10
2.3.2.1 吸水工程之炊飯量推定…………...11
2.3.2.2 加熱工程之控制…………………...12
2.3.3 模糊電子鍋與傳統電子鍋之評價比較……..14
2.3.4 結論…………………………………………..14
第三章 炊煮加熱用之共振型換能器基本原理 16
3.1 渦流負載加熱用之共振型換能器之結構說明……...16
3.2 渦流負載加熱用之共振型換能器基本工作原理…...17
3.2.1 零電壓切換…………………………………..17
3.2.2 功率控制分析………………………………..19
3.2.3 功率因數……………………………………..20
3.2.4 IGBT導通時間的限制………………………23
3.3 應用共振型換能器之感應電子鍋…………………...23
3.3.1 感應式電子鍋功率控制……………………..24
3.3.2 感應電子鍋功率控制方法…………………..26
第四章 感應電子鍋控制器和驅動器 28
4.1 電鍋模型建立與控制系統模擬……………………….28
4.1.1 電鍋模型參數求取…………………………...29
4.1.2 電鍋控制模擬………………………………...32
4.2 感應電子鍋加熱系統的結構………………………....38
4.2.1 感應電子鍋驅動器的開關控制……………...39
4.3 感應電子鍋控制器與驅動器線路設計………………40
4.3.1 零電壓偵測線路……………………………...42
4.3.2 PI控制器……………………………………...43
4.3.3 溫度命令曲線的產生…………………………44
4.3.4 功率命令對最大電流命令對照表……………47
4.4 模擬和實驗結果…………………………………….…50
4.4.1 FPGA單晶片設計模擬……………………….54
第五章 結論 58
附錄A 模糊控制的實作 60
A.1 模糊知識庫的建立……………………………………60
A.1.1 FKB編譯方式………………………………60
A.1.1.1 將FKB轉換成模糊關係矩陣…..60
A.1.1.2 預先計算的輸出入數值對照表…61
A.1.1.3 FKB轉譯成可執行的即時碼…...61
A.1.2 FKB直譯方式………………………………62
A.1.3 FKB直譯方式與FKB編譯方式的比較… .62
A.2 即時直譯式模糊實作…………………………………63
A.2.1 分離式模糊知識庫決策表……………….…63
A.2.2 即時直譯式模糊推論機…………………….64
附錄B 炊飯原理 66
B.1 吸水工程………………………………………………66
B.2 加熱工程………………………………………………67
B.3 沸騰工程………………………………………………67
B.4 蒸著工程………………………………………………67
附錄C 模糊自調變PI控制器 68
C.1 參數調變模糊推論規則………………………………68
參考文獻 72

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