Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/2660
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dc.contributor.advisor張 銘 永zh_TW
dc.contributor.advisorM. Y. Changen_US
dc.contributor.author卓迺智zh_TW
dc.contributor.authorJow, Nycheeen_US
dc.date2003zh_TW
dc.date.accessioned2014-06-05T11:43:45Z-
dc.date.available2014-06-05T11:43:45Z-
dc.identifier.urihttp://hdl.handle.net/11455/2660-
dc.description.abstract中 文 摘 要 本文主要內容是利用LQG控制法則設計三種不同的數位控制器,並以壓電片為感測與致動器,實際應用在含加速轉動效應複合材料疊層板的振動控制上並討論其控制效果。 所使用的控制器分別為標準型LQG控制器、含內部模型的LQG控制器與含干擾補償之LQG控制器。其中,標準型與含內部模型的LQG控制器其控制輸入皆由估測狀態決定,而含內部模型的LQG控制器並經由一具積分作用(Integral action)的動態模型(dynamics)來消除系統的干擾。含干擾補償之LQG控制器則使用前饋與回饋的控制迴路(feedforward and feedback control loop),首先,估測每個時間間隔下的干擾力,將所估測的干擾力視為另一組狀態變數而與板的回授狀態分別再以前饋及回饋方式方式輸入,以消除系統干擾並抑制其振動。經理論模擬顯示此三種不同的控制方式皆能有效抑制複材板因加速轉動效應所產生的擾動。而第三種含干擾補償之LQG控制器因能直接估測干擾力並以前饋的方式加以消除,故在理論模擬時有較佳的控制效果。zh_TW
dc.description.abstractAbstract The objective of this thesis is to design suitable digital controllers based on LQG theory that are used to suppress the vibration of the composite plates resulting from the rotational acceleration effect. The piezoelectric patches bonded on the surface of the plates are used as sensors and actuators. In the framework of LQG theory, three types of digital controllers are investigated. They are the regular LQG controller, the internal model based LQG controller and the LQG controller with an external disturbance force compensator. The control inputs of the regular and internal model based LQG controllers all consist of the feedback of the estimated states. But for the later one, an additional dynamic system with integral action is included to attenuate the disturbance of the system. The third one contains the feedforward and feedback control loops with a modal disturbance force observer. The modal disturbance force are estimated at each time interval in modal space and are regarded as additional state variables that are combined with the feedback of states to suppress the vibration. It is shown from computer simulations that the three types of digital controllers all are proven they can attenuate the vibration of the composite plates involving the rotational acceleration effect. The LQG controller with the external disturbance force compensator is more effective than the others because of the use of modal disturbance force observers that can estimate the disturbance and cancel it in the feedforward loop.en_US
dc.description.tableofcontents章 節 目 錄 誌謝 Ⅰ 中文摘要 Ⅱ 英文摘要 Ⅲ 章節目錄 ⅠⅤ 圖目錄 ⅤⅡ 表目錄 Ⅹ 符號索引 ⅩⅠ 第一章 緒論 1.1 引介 1 1.2 研究目的與內容 3 第二章 含壓電片旋轉複材板理論基礎與推導 2.1 系統說明 4 2.2 馬達驅動剛性旋轉軸板系統之扭轉振動 5 2.3 單層複合材料板的本構方程式 8 2.4 旋轉板位移場假設 12 2.5 有限元素模式 13 2.6 壓電材料的本構方程式 16 2.7 含壓電旋轉複材板運動方程式 21 2.8 暫態分析-模態分析方法 23 第三章 數位控制理論 3.1 標準型LQG控制器 27 3.2 含內部模型的LQG控制器 30 3.3 含干擾補償的LQG控制器 32 第四章 實例分析與實驗驗證 4.1 振動控制實驗 35 4.1.0 壓電片黏貼位置的選擇 36 4.1.1 模態測試與理論參數調整 39 4.1.2 無控制下旋轉板的暫態響應 43 4.1.3 使用標準型LQG控制器的實驗驗證 48 4.2 實例分析-複材板旋轉振動控制模擬 50 4.2.1 使用標準型LQG控制器的實例分析 51 4.2.2 使用含內部模型的LQG控制器的實例分析 54 4.2.3 使用含干擾補償的LQG控制器的實例分析 55 第五章 結論與展望 5.1 結論 60 5.2 未來展望 61 參考文獻 62 附錄A 壓電感測與致動參數矩陣 64 附錄B 實驗設備與相關材料性質 67zh_TW
dc.language.isoen_USzh_TW
dc.publisher機械工程學系zh_TW
dc.subjectDisturbance force obseveren_US
dc.subject干擾力估測器zh_TW
dc.subjectRotational acceleration effecten_US
dc.subjectvibration controlen_US
dc.subjectLQG controlleren_US
dc.subjectPiezoelectric patchen_US
dc.subjectComposite plateen_US
dc.subject加速轉動效應zh_TW
dc.subject振動控制zh_TW
dc.subjectLQG控制器zh_TW
dc.subject壓電片zh_TW
dc.subject複合材料板zh_TW
dc.title含加速轉動效應複材板振動控制之探討zh_TW
dc.titleStudies of the Vibration Control of the Composite Plates Involving the Rotational Acceleration Effecten_US
dc.typeThesis and Dissertationzh_TW
item.grantfulltextnone-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.languageiso639-1en_US-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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