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Sensor location selection for structures via identifiability analysis in the time-scale domain

TitleSensor location selection for structures via identifiability analysis in the time-scale domain
Publication TypeJournal Article
Year of Publication2013
AuthorsDanai K, Civjan SA, Styckiewicz MM
JournalJournal of Sound and Vibration
Volume332
Issue24
Start Page6296
Pagination6296–6311
Date Published11/2013
Abstract

Sensor location selection for structures is demonstrated via identifiability analysis. The sensitivities of sensor outputs to structural stiffness coefficients are computed by a model and transformed via continuous wavelet transforms into the time-scale domain to characterize their shape attributes and accentuate their differences. Regions are then sought in the time-scale plane wherein the wavelet coefficient of an output sensitivity surpasses all the others’ as indication of the sensitivity's uniqueness. This yields a comprehensive account of identifiability by each output for individual stiffness coefficients as the basis for output selection. The proposed output selection strategy is demonstrated for an eight-story building frame model.

DOI10.1016/j.jsv.2013.06.015