臺灣博碩士論文加值系統

本論文按ISO指引建議的方法，進行電磁輻射干擾量測不確定度分析。文中依據ANSI-C63.4在頻率30-1000MHz範圍內取27不同頻率量測點，分別對EMI接收機、電纜、阻抗不匹配、天線因子等造成電磁輻射干擾量測不確定度的主要來源，進行各項不確定度實驗。從實驗數據中分析出平均值修正到電磁輻射干擾量測值；以隨機標準差計算實驗不確定度，最後討論在95%信賴水準之擴充不確定度與EMC符合性之間的關係及實驗成本效益的評估。

This thesis analyzes the uncertainty of a radiated electromagnetic interference test based on the ISO Guide. The major sources of uncertainty in the radiated electromagnetic interference test which include EMI receiver, measurement cable, load impedance mismatch and antenna factor, are measured at 27 sampled frequencies in range of 30MHz to 1000 MHz, According to the regulation of ANSI-C63.4. The mean and variance of measured data are used to calibrate the loss of a radiated electromagnetic interference test and to calculate uncertainty. Finally, the relation between the expanded uncertainty for a confidence level of 95% and EMC compliance is investigated and the cost effective of the uncertainty test is evaluated.

中文摘要…………………………………………………………...i
英文摘要…………………………………………………………...ii
誌謝………………………………………………………………... iii
目錄………………………………………………………………... vi
表目錄……………………………………………………………... vii
圖目錄……………………………………………………………... ix
符號說明…………………………………………………………...xi
第一章緒論………………………………………………………...1
1.1 EMC量測不確定度簡介…………………………………..1
1.2研究動機與目的……………………………………………2
1.3研究方法……………………………………………………2
1. 4各章摘要…………………………………………………...3
第二章量測誤差與量測不確定度………………………………...4
2.1量測誤差……………………………………………………4
2.2量測誤差分類………………………………………………4
2.3量測誤差處理………………………………………………5
2.4量測誤差合成………………………………………………5
2.5量測不確定度………………………………………………5
2.6量測不確定度分類…………………………………………6
2.7量測不確定度與量測誤差比較……………………………6
2. 8誤差及不確定度相關術語與定義………………………...7
第三章ISO指引建議之量測不確定度求法……………………...9
3.1 ISO指引之歷史發展……………………………………….9
3.2 ISO指引創新觀念………………………………………….9
3.3ISO指引量測不確定度計算程序…………………………..10
3.3.1不確定度計算步驟……………………………………10
3.3.2量測不確定度估算流程圖……………………………10
3.4量測系統模式建立…………………………………………11
3.5 A類不確定度估算法………………………………………12
3.5.1 A類不確定度估算程序………………………………12
3.5.2均值……………………………………………………12
3.5.3標準差…………………………………………………13
3.5.4自由度…………………………………………………14
3.5.5均值實驗標準差………………………………………14
3.5.6常態分布圖……………………………………………15
3.6 B類不確定度估算法……………………………………….16
3.6.1 B類不確定度估算程序……………………………….16
3.6.2 B類估算法輸入量機率分布類別…………………….16
3.6.2.1矩型分佈……………………………………...16
3.6.2.2三角形分佈…………………………………...17
3.6.2.3 U形分佈……………………………………...17
3.6.3 B類估算法的自由度………………………………….18
3.7組合標準不確定度求法……………………………………18
3.7.1組合標準不確定度估算程序…………………………18
3.7.2靈敏係數………………………………………………19
3.7.3組合標準不確定度有效自由度………………………19
3.8擴充不確定度求法…………………………………………19
3.8.1擴充不確定度估算程序………………………………19
3.9量測不確定度系統分析…………………………………….22
3.9.1倍數關係的系統模式分析……………………………22
3.9.2二元合差函數關係的系統模式分析…………………23
3.9.3多元線性函數關係的系統模式分析…………………24
3.9.4二元非線性函數關係的系統模式分析………………25
3.9.5多元非線性函數關係的系統模式分析………………27
第四章電磁輻射干擾量測不確定度實驗………………………...29
4.1電磁干擾量測簡介…………………………………………29
4.2電磁輻射干擾量測不確定度分析範圍及實驗步驟………30
4.3各分項不確定度實驗統計分析步驟………………………31
4.4EMI接收機分項量測不確定度實驗……………………….32
4.4.1實驗依據及方法………………………………………32
4.4.2實驗儀具及步驟………………………………………32
4.4.3實驗數據篩選…………………………………………33
4.4.4實驗數據統計分析……………………………………33
4.4.5實驗不確定度及自由度估算…………………………33
4.5電纜傳遞損耗分項量測不確定度實驗……………………38
4.5.1實驗依據及方法………………………………………38
4.5.2實驗儀具及步驟………………………………………38
4.5.3實驗數據篩選…………………………………………39
4.5.4實驗數據統計分析……………………………………39
4.5.5實驗不確定度及自由度估算…………………………39
4.6阻抗不匹配量測不確定度實驗……………………………44
4.6.1實驗依據及方法………………………………………44
4.6.2實驗儀具及步驟………………………………………44
4.6.3實驗數據篩選…………………………………………45
4.6.4實驗數據統計分析……………………………………45
4.6.5實驗不確定度及自由度估算…………………………46
4.7天線因子校正不確定度實驗………………………………50
4.7.1實驗依據及方法………………………………………50
4.7.2實驗儀具及步驟………………………………………51
4.7.3實驗數據篩選…………………………………………53
4.7.4實驗數據統計分析……………………………………53
4.7.5實驗不確定度及自由度估算…………………………53
4.8電磁輻射干擾量測不確定度分析…………………………65
第五章 結果討論………………………………………………….69
參考文獻…………………………………………………………...72
附圖………………………………………………………………...75
附錄A………………………………………………………………96
附錄B………………………………………………………………101
簡歷………………………………………………………………… 105

參 考 文 獻
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