Comparison of different optimum criteria for sensor placement in lattice towers

摘要

Placing sensors at appropriate locations is an important task in the dynamic assessment of the mechanicalnsystems, and its role is central in structural health monitoring. All sensors have to be placed on the structurenso that all sought system features be obtained from the experimental tests. Sensor network design is ratherndiffused in laboratory applications, but there are scarce investigations on real civil structures, and they arennot so well documented. In order to give a contribution in this framework, the present paper deals with thenoptimal sensor placement problem in lattice towers. With reference to six of the most diffused existingnoptimum criteria and according to mechanical and energetic formulations, several sensor network confi gurationsnare calculated for two broadcasting antennas, adopted as benchmark cases of studies. The fi nalntopological confi gurations of the networks are compared, and the most relevant differences are discussed.nMoreover, the information content behaviour is computed to investigate the connection between sensornnetwork topology and its ability to withstand the presence of undesired signals (e.g., noise) during thenmeasurements. The results illustrated here may be useful for sensor network design for this special classnof structures. Copyright © 2010 John Wiley & Sons, Ltd.