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Indexed by:期刊论文

Date of Publication:2013-09-01

Journal:SMART STRUCTURES AND SYSTEMS

Included Journals:SCIE、Scopus

Volume:12

Issue:3-4,SI

Page Number:235-250

ISSN No.:1738-1584

Key Words:optimal sensor placement; effective independence method; Canton Tower; sensitivity; robustness

Abstract:Optimal sensor placement (OSP) technique plays a key role in the structural health monitoring (SHM) of large-scale structures. According to the mathematical background and implicit assumptions made in the triaxial effective independence (EfI) method, this paper presents a novel multi-dimensional OSP method for the Canton Tower focusing on application demands. In contrast to existing methods, the presented method renders the corresponding target mode shape partitions as linearly independent as possible and, at the same time, maintains the stability of the modal matrix in the iteration process. The modal assurance criterion (MAC), determinant of the Fisher Information Matrix (FIM) and condition number of the FIM have been taken as the optimal criteria, respectively, to demonstrate the feasibility and effectiveness of the proposed method. Numerical investigations suggest that the proposed method outperforms the original EfI method in all instances as expected, which is looked forward to be even more pronounced should it be used for other multi-dimensional optimization problems.