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Proceedings Paper

Integration of structural control and structural evaluation for large scale structural system
Author(s): Y. Ding; S. S. Law
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Paper Abstract

An integrated system of structural control and health monitoring can be implemented in modern smart structures with multi-purpose sensor system. The integration system not only promotes the reliability of the smart structure but also provides information on the condition of the smart structure. However, the on-line implementation of structural control and evaluation of a large scale structure are difficult due to the complicated calculation with large mass, damping and stiffness matrices. Moreover, the reliability of the structural control and evaluation results will also reduce in a large scale structural system during severe earthquake with centralized control system. In this paper, a new combined system of adaptive structural control and structural evaluation is proposed. The structural control system is implemented with the LQG control and the pseudo negative stiffness (PNS) control both are effective control methods for the vibration mitigation of structures. The structural control is adaptive with the updating of the structural parameters of the system via the structural evaluation system. A modified adaptive regularization method is used in the solution of the structural evaluation via model updating. The combination of the structural control and evaluation is designed as autonomous and decentralized to guarantee the reliability under the harsh environmental excitation. The autonomous decentralized control system explores a new substructure method which is more efficient in calculation with smaller mass, damping and stiffness matrices for the structural evaluation. The proposed integrated system is implemented and verified through numerical simulation of a 16-storey planar shear frame subject to seismic ground motion.

Paper Details

Date Published: 27 April 2011
PDF: 12 pages
Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 797724 (27 April 2011); doi: 10.1117/12.880690
Show Author Affiliations
Y. Ding, The Hong Kong Polytechnic Univ. (Hong Kong, China)
S. S. Law, The Hong Kong Polytechnic Univ. (Hong Kong, China)

Published in SPIE Proceedings Vol. 7977:
Active and Passive Smart Structures and Integrated Systems 2011
Mehrdad N. Ghasemi-Nejhad, Editor(s)

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