Abstract
An algorithm is presented here to identify parameters of linear models of buildings under orthogonal bi-dimensional seismic excitation, using acceleration measurements of sensors arbitrarily arranged on the stories, in real time. The model considers three degrees of freedom for each story and uses an efficient reparameterization of the least-squares algorithm that allows a very important reduction in the number of calculations, when compared with the standard formulation. Results obtained from simulations and with data obtained from instrumented buildings confirm the efficacy of the proposed method.
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