原文传递
Deployable Active Mass Dampers for Vibration Mitigation in Lightweight Bridges
| 题名： | Deployable Active Mass Dampers for Vibration Mitigation in Lightweight Bridges |
| 其他题名： | Anderson,B.D.,and Moore,J.B.(2007).Optimal control:Linear quadratic methods,Courier,Chelmsford,MA. |
| 正文语种： | 英文 |
| 作者： | Kevin Goorts |
| 关键词： | lightweight；applications；controller；structure；formulation；dynamics；identification；footprint；attention；mechanica |
| 摘要： | The use of lightweight materials in bridges has brought significant attention to the design and construction of control devices that can suppress excessive vibrations, especially to satisfy serviceability requirements. Control devices enable realization of structural designs for lightweight structures without a commensurate increase in the overall footprint or weight. Most current structural control devices are permanent installations of control systems, tuned to particular structural properties and hence specific to a particular application. This paper proposes a novel concept of a deployable active control device aimed at applications where short-term vibration mitigation during predictable events is desired. This deployable active control device consists of an electromechanical mass damper (EMD) mounted on an uncrewed ground vehicle (UGV) and does not rely on a rigid connection to the structure, thus facilitating rapid deployment for temporary applications. The controller consists of a linear quadratic Gaussian (LQG) algorithm in series with a model to compensate for UGV dynamics and a controller for the EMD. This paper introduces this concept for the first time, followed by the controller formulation including the identification of transfer-function models to capture the EMD and UGV dynamics. The performance of the models and overall control performance of the proposed system is studied through real-time hybrid simulation (RTHS) involving coupled numerical and experimental substructures. The experimental results confirm effective control is achieved using an EMD mounted on a UGV by compensating for UGV dynamics. This concept shows promising results where temporary control is desired, especially in lightweight bridge applications. |
| 出版年： | 2017 |
| 论文唯一标识： | P-26Y2017V143N12006 |
| 英文栏目名称： | TECHNICAL PAPAERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001921 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 143 |
| 期： | 12 |
| 页码： | 63-78 |
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