Decentralized civil structural control using real-time wireless sensing and embedded computing

被引:58
|
作者
Wang, Yang
Swartz, R. Andrew
Lynch, Jerome P. [1 ]
Law, Kincho H.
Lu, Kung-Chun
Loh, Chin-Hsiung
机构
[1] Univ Michigan, Dept Civil & Environm Engn, Ann Arbor, MI 48109 USA
[2] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA
[3] Natl Taiwan Univ, Dept Civil Engn, Taipei 10764, Taiwan
关键词
structural control; wireless communication; embedded computing; decentralized control; velocity feedback control;
D O I
10.12989/sss.2007.3.3.321
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Structural control technologies have attracted great interest from the earthquake engineering community over the last few decades as an effective method of reducing undesired structural responses. Traditional structural control systems employ large quantities of cables to connect structural sensors, actuators, and controllers into one integrated system. To reduce the high-costs associated with labor-intensive installations, wireless communication can serve as an alternative real-time communication link between the nodes of a control system. A prototype wireless structural sensing and control system has been physically implemented and its performance verified in large-scale shake table tests. This paper introduces the design of this prototype system and investigates the feasibility of employing decentralized and partially decentralized control strategies to mitigate the challenge of communication latencies associated with wireless sensor networks. Closed-loop feedback control algorithms are embedded within the wireless sensor prototypes allowing them to serve as controllers in the control system. To validate the embedment of control algorithms, a 3-story half-scale steel structure is employed with magnetorheological (MR) dampers installed on each floor. Both numerical simulation and experimental results show that decentralized control solutions can be very effective in attaining the optimal performance of the wireless control system.
引用
收藏
页码:321 / 340
页数:20
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