- 學位論文
分散式與集中式控制理論於偏心結構之半主動控制研究
Decentralized Control versus Centralized Control of Torsion Coupling Building
摘要
本文旨在研究房屋結構加裝半主動控制元件之減振成效，針對三層樓質量偏心結構物配合兩組磁流變減振器(MR damper)進行扭轉控制(Torsion Control)震動台實驗。 利用集中式與分散式控制理念操控磁流變減振器之輸出控制力，配合有線量測系統進行半主動控制實驗。集中式控制是以全部量測反應回饋計算控制力；分散式控制是以局部量測反應回饋推估控制力進而達到結構控制效益。配合H2-LQG、H∞-LQG的控制理論，針對下列四種不同控制方式進行研究：(a) H2 centralized control、(b) H2 decentralized control、(c) H∞ centralized control、(d) H∞ decentralized control，運用有限的加速度量測做為系統之回饋訊號，比較其控制效果。 由於科技的進步，感應器的研發，使得控制方式不再僅是以電纜線作為傳輸的有線控制系統；而是可用電波傳輸資料的無線控制系統。因此也應用 集中式控制理論、配合無線感應器(wireless sensors)量測技術、結合MR-阻尼器進行扭轉控制實驗，進而討論有線與無線控制之差異，驗證無線控制系統之可行性。
並列摘要
The purpose of this thesis is to investigate the effect of the semi-active control system in reducing the vibration of a torsion-coupling steel frame. In this study, the semi-active control system contains two Magneto-Rheological (MR) dampers as control devices located on the first floor of a torsion-coupling steel frame and tested it on a shaking table. Both wired and wireless structural sensing and control system will be used to control this structure. During the experiment, four control algorithms, including H2 centralized control algorithm, H∞ centralized control algorithm, H2 decentralized control algorithm and H∞ decentralized control algorithm are investigated. The measurement for use of all control cases focus on the acceleration feedback for controllers. Finally, the effectiveness of the proposed wired and wireless control algorithms and the usefulness of MR-dampers for the structural response reduction (including torsion-coupling) are demonstrated. Discussion on the mathematical model of MR-damper for use in wireless control is made. Method to determine the weighting matrix (Q and R) for control system is also presented.