Detection of abrupt changes in modal characteristics of a vibrating structure-a case study
作者： T.D. Popescu
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摘要: The problem of change detection in the poles signals having unknown time varying zeroes is addressed. Instead test statistics based upon standard likelihood ratio approach, which no help this case because zeroes, there used a on an identification method (instrumental variables), known to decouple AR and MA coefficients model. procedure has been for modal characteristics single degree freedom oscillator vibrating structure, multi-story reinforced concrete building, subject strong seismic motion.
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