臺灣博碩士論文加值系統

本文應用離散時間延遲系統直接加速度回饋控制理論於樓房結構受地震作用下之減振分析。依選擇控制力加權因子經由考慮了時間延遲之LQR控制理論，計算最佳化常數回饋增益矩陣。並以加速度感應計量測樓房結構之絕對加速度反應，乘上回饋增益矩陣，即可計算出需要施加在樓房結構之控制力。採用直接加速度回饋，在實行主動控制時，不須要全狀態量測，只要少量的感應器及控制器即可達到減振效果。
在無控制力施加時間延遲的情況下，離散時間系統可得到與連續時間系統相同之控制結果。若控制力施加具時間延遲將導致系統不穩定。應用離散時間最佳直接輸出控制理論除可保證系統穩定並可達到對於減振效果與經濟效益的要求。文中除了理論推演外，並以單自由度及多自由度樓房結構受地震作用之減振進行數值驗證。

第一章 緒論 ...........1
1.1研究動機與目的 ...........1
1.2文獻回顧 ...........2
1.3本文內容 ...........4
第二章 直接加速度輸出回饋控制理論...........5
2.1離散時間系統 ...........6
2.2結構系統之絕對加速度 ...........8
2.3無時間延遲加速度直接輸出回饋...........9
2.4具時間延遲加速度直接輸出回饋..........14
2.5離散時間系統之動態特性 ..........19
2.5.1特徵值、頻率及阻尼比 ..........19
2.5.2轉換函數 ..........21
第三章 無時間延遲系統之數值驗證..........22
3.1 單自由度結構控制系統 ..........24
3.1.1電腦程式之驗證 ..........24
3.1.2取樣間隔對回饋增益之關係..........25
3.1.3加權因子與回饋增益之關係..........25
3.1.4加權因子與系統特性之關係..........25
3.1.5加權因子與結構尖峰反應之關係..........26
3.1.6控制效果評估 ..........27
3.2 多自由度結構控制系統 ..........29
3.2.1單一感應器、單一控制器之回饋控制.........29
3.2.2控制效果評估 ..........30
第四章 具時間延遲系統之數值驗證..........32
4.1時間延遲與系統動態特性之關係..........34
4.1.1單自由度結構控制系統 ..........34
第五章 結論與建議 ..........36
參考文獻 ..........38
表格 ..........41
圖形 ..........45

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