# 臺灣博碩士論文加值系統

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 摘 要 把逆向熱傳「即時量測系統」用於測量壓鑄模具相關熱物理性質的研究，在國內尚未發現。為因應工業界實際需要，本文即以此主題進行探討及研究。壓鑄模具「即時量測系統」是否適用，可以經由壓鑄模具熱傳敏感度(sensitivity)分析、系統程式誤差偏移量(deterministic bias)及變化敏感度(variance)測試等方法來判定。藉由上述之方法，可以知道進行壓鑄模具相關熱物理性質量測時，有效的量測起止時間及溫度感測器安放位置。 本論文實驗包括二部份：1、電腦模擬實驗：模具內溫度分佈數據是經由正向熱傳求解而得到的，再把所得數據代入逆向熱傳運算程式內倒推出界面溫度、熱通量及熱傳係數；2、現埸實驗：模具內溫度分佈數據是由「即時量測系統」擷取，數據經處理後代入逆向熱傳運算程式內倒推出界面溫度、熱通量及熱傳係數。 最後，比較這二種實驗所得的數據參數，驗證理論之正確性。並獲知壓鑄模具即時量測系統最佳之量測時間及空間座標參數。 關鍵詞： thermal inverse. die─casting. real-time measuring system
 Abstract Thermal real─time measuring system applied for measuring physical properties of die─casting molds is not found in Taiwan. For the requirement of industry, this paper studied the subject mentioned above. By way of thermal sensitivity analysis, program deterministic bias and variance bias test, if a real─time measuring system of die─casting molds being available or not can be determined. According to those data discussed above, We can know what is the right time to begin measuring, what is the right time to end measuring, what is the better positions of thermal couples installed in thermal transducer. There were two experiments included in the thesis. 1. computer experiments, temperature histories were acquired by a direct analysis, on which thermal properties, such as critical temperature, heat flux, heat transfer coefficient, were estimated by an inverse analysis; 2. real─word experiments, temperature histories are acquired and smoothed by a real─time measuring system, in which thermal properties were estimated the same as 1. Finally, the two kinds of experiments mentioned above were compared and discussed. The theories can be proved rightly. From that the better time interval for measuring temperature histories and the right positions in which thermal couples installed were got. Key words：thermal inverse, real─time measuring system, die-casting molds
 目錄 誌謝-------------------------------------------------------i 摘要------------------------------------------------------ii Abstract-------------------------------------------------iii 符號說明--------------------------------------------------iv 圖目錄-----------------------------------------------------v 表目錄----------------------------------------------------ix 第一章 緒綸 1.1 前言------------------------------------------------1 1.2 研究背景及目的--------------------------------------2 1.3 研究目標--------------------------------------------3 1.4 文獻回顧--------------------------------------------3 1.5 論文結構--------------------------------------------6 第二章 理論分析 2.1 理論基礎---FSM法------------------------------------7 2.2 控制容積法介紹-------------------------------------14 第三章 實驗設備 3.1 實驗目的-------------------------------------------17 3.2 硬體架構 3.2-1 熱偶感測器之設計---------------------------------17 3.2-2 溫度感測計---------------------------------------17 3.2-3 資料擷取卡---------------------------------------18 3.2-4 J type thermal module---------------------------18 3.2-5 信號處理器---------------------------------------18 3.2-6 筆記型電腦---------------------------------------19 3.3 恆溫油槽-------------------------------------------19 第四章 實驗程序 4.1 實驗設計應知的事項---------------------------------32 4.2 電腦模擬實驗程序-----------------------------------36 4.3 現埸實驗程序. 4.3-1 實驗流程----------------------------------------38 4.3-2 實驗方法----------------------------------------38 第五章 實驗結果與討論 5.1 電腦模擬實驗結果----------------------------------40 5.2 現埸實驗結果--------------------------------------41 5.3 討論與分析--------------------------------------- 42 5.4 現埸實驗結果討論----------------------------------44 第六章 結論與建議 6.1 結論----------------------------------------------74 6.2 建議----------------------------------------------74 參考文獻-----------------------------------------------76
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 1 表面熱傳性質即時量測系統之開發 2 利用數值模擬分析模具溫度與熔湯溫度對壓鑄件之影響 3 壓鑄模穴表面熱性質即時量測系統之實驗研究

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