本文主要針對複金屬燈音頻共振現象特性進行研究，其中包括音頻共振現象對電弧狀態、光譜能量分佈、色溫、電特性及光輸出所造成的影響。為了探討音頻共振現象，本研究使用兩組不同波形之高頻電子式安定器，其中一組是利用串聯共振換流器，以弦波電流驅動燈管，而另一組是以限流模式下操作之全橋式換流器，以方波電流驅動燈管，主要針對70W複金屬燈，操作頻率範圍介於20kHz至30kHz，且兩組測試電路的操作頻率與燈管電流皆可獨立調變；並設置了一套實驗量測系統，量測光譜能量分佈與色溫，以及燈管電壓與光輸出的變化。
　　根據各項實驗和討論分析後，可以得出以下的結果：(1)光譜能量分佈與色溫均會隨著音頻共振現象越嚴重而變化越明顯；(2) 音頻共振的程度可由偵測電路所偵測出的音頻訊號大小明確地表示；(3)使用方波電流驅動時，在相同程度的音頻共振下，光譜能量分佈與色溫的變化，較弦波電流驅動時輕微。
經由對複金屬燈音頻共振發生的現象深入探討，本論文的研究結論可提供訂定照明設備規範遵循的憑據。

The acoustic resonance phenomena of metal halide lamps are investigated. A measuring system is set up to examine the effects of the acoustic resonance to the shape of the lamp arc, the lighting energy spectrum, the color temperature, the light output as well as electrical characteristics. Two ballast circuits are built to drive the lamps with the sine-wave current and the square-wave current, respectively. One ballast employs the series resonant inverter to output the sinusoidal lamp current. The other makes use of the full-bridge inverter to drive the lamps with the square-wave current. They are operated over a high-frequency range from 20kHz to 30kHz. For both ballast circuits, the operating frequency and the magnitude of the lamp current can be controlled independently.
　　The experiments are conducted on the 70-W metal halide lamps. The experimental results show that the spectral energy and the color temperature change more significantly as the acoustic resonance becomes more serious. These effects become less significant when the lamps are driven by the square-wave current. The degree of the acoustic resonance can be identified by detecting the variation of the lamp voltage or the output light. The investigated results of the thesis can provide useful information when a standard of the acoustic resonance is considered.

目　　錄
中文摘要 I
英文摘要 II
目錄 III
圖目錄 V
表目錄 VII
第一章 簡介 1
　　1-1 研究動機 1
　　1-2 本文大綱 2
第二章 複金屬燈音頻共振現象之探討 4
　　2-1 音頻共振現象的成因 4
　 2-2 音頻共振現象之電弧狀態 5
2-3 光譜能量分佈與色溫 11
2-4 音頻共振現象之電氣特性 13
2-4-1 電流波形對燈管瞬時功率之影響 13
2-4-2 音頻共振之燈管電壓與電流 15
第三章 音頻共振之量測系統 19
3-1 量測系統架構 19
3-2 測試電路 20
3-2-1 弦波電流驅動測試電路 20
3-2-2 方波電流驅動測試電路 21
3-3 音頻共振偵測電路 23
3-4 光感測電路 28
第四章 實驗量測結果 30
4-1 音頻共振對燈管電弧之影響 30
4-2 音頻共振對光譜能量分佈之影響 33
4-3 音頻共振對色溫之影響 39
4-4 音頻共振對燈管電壓之影響 43
4-5 音頻共振對光輸出之影響 49
第五章 結論與未來討論方向 54
參考文獻 56

圖目錄
圖2-1 燈管電弧狀態示意圖 5
圖2-2 燈管光輸出狀態 6
圖2-3　各等級之燈管電弧狀態 7
圖2-4　複金屬燈發生嚴重音頻時燈管爆裂之燈管實體圖 10
圖2-5 無音頻共振之光譜能量分佈 12
圖2-6 嚴重音頻共振之光譜能量分佈 12
圖2-7 不同電流驅動之燈管電壓、電流與瞬時功率示意圖 14
圖2-8 音頻共振發生時之燈管電壓波形示意圖 16
圖2-9 弦波電流驅動未發生音頻共振之燈管電壓波形 16
圖2-10 弦波電流驅動發生音頻共振之燈管電壓波形 17
圖2-11 方波電流驅動未發生音頻共振之燈管電壓與電流波形 17
圖2-12 方波電流驅動發生音頻共振之燈管電壓與電流波形 18
圖2-13 音頻共振發生之燈管電壓與電流波形 18
圖3-1 整體量測架構示意圖 19
圖3-2 弦波電流驅動之測試電路 20
圖3-3 弦波電流驅動之控制電路 20
圖3-4 弦波驅動之燈管電壓、電流與功率波形 21
圖3-5 方波電流驅動之測試電路 22
圖3-6 方波電流驅動之控制電路 22
圖3-7 方波驅動之燈管電壓、電流與功率波形 22
圖3-8 理想特性低通濾波器與巴特沃茲特性低通濾波器 23
圖3-9 Sallen-Key biquads電路 24
圖3-10 音頻共振偵測電路 26
圖3-11 燈管電壓與降壓波形 27
圖3-12 音頻共振偵測電路之頻率響應圖 27
圖3-13 光電晶體結構、符號及等效電路 28
圖3-14 光電晶體實際照片 29
圖3-15 光感測電路 29
圖4-1 弦波電流驅動之音頻共振等級分佈圖 31
圖4-2 方波電流驅動之音頻共振等級分佈圖 32
圖4-3 弦波電流驅動時各等級音頻共振之光譜能量分佈 34
圖4-4 方波電流驅動時各等級音頻共振之光譜能量分佈 37
圖4-5 弦波電流驅動時各等級音頻共振之色溫變化 39
圖4-6 弦波電流驅動時各頻率音頻共振與色溫的變化 40
圖4-7 方波電流驅動時各音頻共振等級之色溫變化 41
圖4-8 方波電流驅動時各頻率音頻共振與色溫的變化 41
圖4-9 分壓後的燈管電壓波形與音頻訊號波形 43
圖4-10 等級2與等級3之分壓後的燈管電壓波形與音頻訊號波形 46
圖4-11 弦波電流驅動之音頻訊號分佈圖 47
圖4-12 方波電流驅動之音頻訊號分佈圖 48
圖4-13 不同等級之音頻共振光輸出狀態 49

表目錄
表2-1 光譜顏色波長及範圍 11
表2-2 色溫範圍與色系關係 13
表4-1 弦波電流驅動時各等級音頻共振之色溫變化範圍 40
表4-2 方波電流驅動時各音頻共振等級之色溫變化範圍 41
表4-3 弦波電流驅動之各等級音頻訊號 48
表4-4 方波電流驅動之各等級音頻訊號 48
表4-5 弦波電流驅動各等級音頻共振之光輸出閃爍頻率範圍 52
表4-6 方波電流驅動各等級音頻共振之光輸出閃爍頻率範圍 53

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