臺灣博碩士論文加值系統

本研究旨在探討利用強健混合H2/H∞ PID控制器分別控制紅、綠和藍發光二極體，以達到具有溫度回饋補償的白平衡目標與功率耗損調校的要求。因為微投影機使用電池為提供電源的方式，故微投影機的功率消耗為研究重點，微投影機中紅、綠和藍發光二極體的亮度受到溫度影響而改變白平衡，故溫度回饋補償亦為研究重點，若採用PID控制器來解決上述問題，將花費更長的時間才能精確達到具有功率消耗調校與溫度回饋補償的白平衡要求。本研究中，將紅、綠和藍發光二極體於25℃至50℃之間取得多個實際量測資料。每隔5℃採用不同的混合H2/H∞ PID控制器，利用混合H2/H ∞ PID控制器降低溫度影響的不確定和提升系統的強健性。混合H2/H∞ PID控制器的靈敏函數S與互補靈敏函數T為目標函數。並經由基因演算法(GA)得到PID控制器的參數，其中控制器配合脈波寬度調變法(PWM)調節控制訊號得到溫度補償與功率消耗調校。Simulink軟體將被用來模擬本研究所提出之系統架構，並使用微控器Freescale MC9S08QE16建構硬體電路。最後由實作結果驗證控制器可以達到功率消耗調校與溫度補償的RGB LEDs白平衡。

In this study, the main object is to investigate how to design the robust mixed H2/H∞ PID controller, which attains the power consumption adjustment and RGB LEDs white balance considering temperature feedback compensation. The power source of pice projector uses battery, therefore power consumption adjustment is an important research. White balance of RGB LEDs are changed by temperature affect, so temperature feedback compensation is also another important research topic. If the PID controller is adapted to solve the above problems, it will take long to requirements of white balance with precise adjustment of power consumption adjustment and temperature feedback compensation. In this study, a number of actual measurement data of RGB LEDs are obtained between 25 ℃ to 50 ℃. The use of every 5℃ difference mixed H2/H∞ PID controller reduces, and the influence of temperature uncertainties and improves the robustness of system. The sensitivity functions and complementary sensitivity functions of mixed H2/H∞ PID controller are as the objective function. The parameters of PID controller are obtained by genetic algorithm (GA), where the controllers with pulse width modulation (PWM) adjusts controller signals to get the temperature compensation and power consumption adjustment. Simulink software will be used to simulated the system architecture of this research, and a microcontroller unit Freescale MC9S08QE16 is used to construct hardware circuit. Finally, the implementation of controller can be verified to achieve RGB LEDs white balance with power consumption adjustment and temperature compensation.

目錄
摘要.......................i
英文摘要...................ii
致謝.......................iii
目錄.......................iv
表目錄.....................vi
圖目錄.....................vii
第一章 緒論................1
1.1研究背景................1
1.2微型投影機演進..........2
1.3研究現況與動機..........5
1.4論文架構................6
第二章 相關基礎知識理論....7
2.1 基本色彩學.............7
2.1.1亮度比例式子.........10
2.1.2 色序法顯示技術......13
2.1.3 底座溫度對LEDs特性影響..15
2.2強健混合H2/H∞ PID控制器....18
2.3脈波寬度調變技術........23
2.4基因演算法..............24
第三章 系統模擬設計........26
3.1 系統模型建立...........26
3.2 模擬系統架構...........30
3.3 模擬結果...............37
3.4 分析與討論.............39
第四章 硬體原型之實現......57
4.1 電路介紹...............57
4.2 程式流程...............63
4.3 實驗結果...............65
第五章 結論................67
參考文獻...................69
附錄一.....................73
附錄二.....................75
附錄三.....................76

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