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系統識別號 U0026-0202201812411700
論文名稱(中文) 壓電式抑振工件夾持平台之設計與控制
論文名稱(英文) Design and Control of Piezoelectric Vibration-Suppressed Workholding Platform
校院名稱 成功大學
系所名稱(中) 機械工程學系
系所名稱(英) Department of Mechanical Engineering
學年度 106
學期 1
出版年 107
研究生(中文) 葉宸瑋
研究生(英文) Cheng-Wei Yeh
學號 N16031613
學位類別 碩士
語文別 中文
論文頁數 120頁
口試委員 指導教授-蔡南全
口試委員-田思齊
口試委員-何明字
中文關鍵字 銑切加工  壓電致動  主動控制 
英文關鍵字 Milling  Piezoelectric actuator  Active control 
學科別分類
中文摘要 本研究針對配有內藏型圓柱陣列主動式磁致動器(Embedded Cylindrical Array Magnetic Actuator, ECAMA)之銑床設計一主動式工件振動控制平台(Active Vibration-Suppressed Workholding Platform, AVSWP)。在材料切削上,振動量主宰了工件的加工品質,若在加工過程中存在著過大的振動量,將使工件的表面精度下降。有鑑於此本研究設計了一組工件振動控制平台以抑制工件在加工時的振動量。首先本文研究在銑削時的動態模型與振動來源,著手設計AVSWP並建立其模型。接著設計一套能夠將加速度以位移回授的濾波器,並建立FXLMS主動噪音適應控制器的模型應用於此平台。
最後本研究透過dSPACE DS1104控制發展套件並搭配商用軟體MATLAB/Simulink進行實驗驗證。實驗結果顯示本研究確實能夠有效地抑制工件在切削時的振動量,也降低了工件在切削面的表面粗糙度。
英文摘要 The thesis is aimed to design an active vibration–suppressed workholding platform (AVSWP) for a milling machine to cooperate with an embedded cylindrical array magnetic actuator (ECAMA). As to metal cutting, vibration is one of the major factors which affect the quality of finished workpieces. As long as the excessive vibration is present during milling process, the workpiece’s surface roughness is downgraded. Therefore, this research proposes an active vibration–suppressed workholding platform to suppress vibration in milling process. To achieve this goal, the milling dynamics and the vibration source in milling process are studied. Active noise feedback control based on FXLMS (Filtered-X Least Mean Square) algorithm is applied to achieve satisfactory performance in terms of vibration suppression. An experimental setup is established to verify the efficacy of the active noise feedback controller by accelerometers, signal processing modules (SPMs) and cooperation of two piezoelectric actuators.
論文目次 摘要 I
致謝 V
目錄 VI
表目錄 IX
圖目錄 X
第一章 緒論 1
1.1 前言 1
1.2 文獻回顧 1
1.3 論文架構 4
第二章 銑切動態分析與平台設計 5
2.1 實驗系統架構 5
2.2 動態銑削模型與穩定性分析 9
2.2.1 動態銑削模型 9
2.2.2 銑削穩定性分析 15
2.3 主動式振動控制平台AVSWP 19
2.3.1 壓電致動器介紹 19
2.3.2 撓性結構 22
2.3.3 具放大功能之撓性結構 26
2.3.4 撓性平台之理論分析 Q28
2.3.5 有限元素分析 36
第三章 AVSWP之適應控制器設計 43
3.1 控制目標 43
3.2 濾波器設計 45
3.3 適應性控制器設計 63
3.3.1 主動式適應控制理論 63
3.3.2 濾波型最小均方演算法(Filtered-X Least Mean Square Algorithm, FXLMS Algorithm)與回授型FXLMS適應控制 65
3.4 電腦模擬 70
3.5 本章結論 74
第四章 實驗與驗證 76
4.1 實驗設置 76
4.2 AVSWP之第二路徑轉移函數系統鑑別 87
4.3 裝配ECAMA與AVSWP之銑床切削實驗與結果 96
4.4 本章結論 104
第五章 結論與未來展望 105
5.1 結論 105
5.2 未來發展與建議 105
參考文獻 107
附錄A濾波型類比積分電路 111
附錄B最小均方演算法(Least Mean Square Algorithm) 114
B.1 數位濾波器 114
B.2 最小均方演算法 115
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