臺灣博碩士論文加值系統

關於切換式電源的控制問題，大部分的處理方法為利用狀態空間平均法，將原本具有週期性的系統狀態平均化，再利用此平均化後的簡化模型設計回授控制器。本文將跳脫狀態空間平均法，以切換系統的概念，針對DC-DC降壓轉換器建立其切換模型，並設計具有強建性之切換法則，使得電源電路之參數在特定的範圍內變化時，系統一樣能保持穩定。經由模擬與實作的驗證，證明本文所設計切換法則可成功令狀態軌跡收斂至期望的平衡點。

For control of switched-mode power supplies, most of the approaches are using the state-space averaging method to obtain averaging models of the considered circuits and then designing feedback controllers based on the averaging models. In this thesis, by a different approach, a DC-DC buck converter is modeled as a switched system, and then a robust switching rule is designed to robustly stabilize the switched systems under possible parameter variations. By simulations and practical experiments it is shown that the obtained switching law is able to stabilize the DC-DC buck converter under possible resistance, capacitance, input voltage, and load variations.

摘要 I
Abstract II
目錄 III
圖目錄 V
表目錄 VII
第一章 緒論 1
1.1研究動機與目的 1
1.2 文獻回顧 1
1.3 論文架構 2
第二章 數學基礎與背景知識 3
2.1 切換系統 3
2.2 強健控制 4
第三章 DC-DC降壓轉換器原理與分析 7
3.1 降壓轉換器工作原理 7
3.2 電感電流與漣波 11
3.3 輸出電壓與漣波 11
3.4 電流漣波係數 13
3.4 降壓轉換器之動態模型推導 15
第四章 DC-DC降壓轉換器之強健切換法則設計 17
4.1 數學模型建構 17
4.2 切換法則設計 18
4.3 數值模擬 20
第五章 硬體架構與實測 33
5.1 數位訊號處理器 33
5.1.1 類比數位轉換器(ADC) 34
5.1.2 脈衝頻寬調變模組(ePWM) 36
5.1.3 I/O Port (GPIO) 38
5.1.4中斷控制 40
5.1.5 CPU計時器(CPU Timers) 41
5.2光耦合器 42
5.3電流感測器 43
5.4降壓轉換器規格 43
5.3實驗結果與波形 45
第六章 結論與未來展望 49
6.1結論 49
6.2未來展望 49
參考文獻 50

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