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研究生:陳世慶
研究生(外文):Shih-Ching Chen
論文名稱:解耦控制技術估測波動彈性管特性之理論探討
論文名稱(外文):The Impedance Estimation of Pulsating Tube by Using Decoupling Technique
指導教授:林欽裕林欽裕引用關係
指導教授(外文):Albert Chin-yuh Lin
學位類別:碩士
校院名稱:逢甲大學
系所名稱:自動控制工程所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:60
中文關鍵詞:解耦控制技術非侵入式壓力量測阻抗識別
外文關鍵詞:Decoupling Control TechniqueNoninvasive Pressure MeasurementImpedance Identification
相關次數:
  • 被引用被引用:6
  • 點閱點閱:254
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
解耦控制技術(Decoupling Control Technique, DCT)是一種非侵入式量測彈性管動態壓力的技術。其特點是在感測器平均壓力等同彈性管內平均壓力的下壓位置,追縱變動的管內波動壓力,使彈性管波動行為獨立於周圍彈性組織的影響,此時,所追蹤的位移變化,即為彈性管的管徑變化。藉由識別彈性管的阻抗值,即可估測出實際管內動態壓力。
由於交變波動下彈性管阻抗值將隨時間持續變動,為維持量測之精確性,本文以自適應控制法則,自動調整系統控制參數,以適應不同的阻抗變化。經由Simulink程式模擬結果發現,在自適應控制法則的控制下,彈性管阻抗識別與動態壓力估測的最大誤差分別為9.1%及2.7%,說明解耦控制技術可有效運用於波動彈性管之即時特性監控與管內動態壓力量測。
The Decoupling Control Technique (DCT) is a noninvasive technique for measuring the dynamic pressure of a pulsating tube. The feature of the technique is to exclude the influences of peripheral pulsating tissues by tracking the variation of pulsating pressure at critical location where the mean pressure in the tube and the mean pressure measured by a pressure sensor are equal. Because pulsations of the tube are decoupled, the displacement measured on the skin of peripheral pulsating tissues is the variation of diameter. By identifying the impedance of the pulsating tube, we can estimate the dynamic pressure in the pulsating tube.
In order to maintain the measuring accuracy, we proposed an auto-tuning Control Method to measure the dynamic pressure of a pulsating tube. The results of simulation showed that the measuring error for the pulsating pressure was less than 2.7%, and the identifying error for the impedance of the pulsating tube was less than 9.1%, and explained that the measuring method for measuring the dynamic pressure and identifying the impedance of a pulsating tube is feasible.
誌謝............................................ii
中文摘要.......................................iii
Abstract........................................iv
目錄.............................................v
圖目錄.........................................vii
表目錄..........................................ix
符號表...........................................x
第一章 緒論......................................1
1.1 研究背景.....................................1
1.2 文獻回顧.....................................3
1.3 研究目的與方法 ..............................10
1.4 本文架構....................................11
第二章 理論探討.................................12
2.1 波動彈性管壓力傳遞模型......................12
2.1.1 波動彈性管之直流訊號分析..................15
2.1.2 波動彈性管之交流訊號分析..................15
2.2 解耦控制技術(DCT)...........................16
2.3彈性管機械特性識別...........................19
第三章 自適應控制器設計.........................20
3.1 Beat-to-Beat自調適控制法則..................20
3.2彈性管組抗識別與即時管內壓力估測.............21
3.3 Beat-to-Beat自調適控制法則之模擬驗證........22
3.3.1 模擬參數及資料說明........................22
3.3.2 Beat-to-Beat自調適控制法則之模擬結果......23
第四章 實驗架構.................................27
4.1血管特性量測儀之架構.........................27
4.1.1 血管特性量測儀之追蹤控制器設計............30
4.2 血管特性量測儀之控制器驗證..................31
4.2.1 實驗目的與方法............................31
4.2.2 實驗步驟..................................32
4.2.3 實驗結果與分析............................35
第五章 結論.....................................37
參考文獻........................................38
附錄A 人體實驗數據..............................41
附錄B壓力感測器及訊號處理器之規格...............44
附錄C精密壓電致動器之規格.......................45
附錄D Beat-to-Beat血管特性量測儀實驗記錄表......49
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