A method is presented for the identification of sensor failures in distributed structures. The procedure can be used with controlled or uncontrolled systems, and is applicable when a large number of sensors are used. For control systems, the failure detection can be implemented with any control scheme. It makes use of estimates of the system state to identify the faulty sensor(s). The sensors output is estimated using modal analysis and a decentralized approach. These estimates are plotted and compared with plots of the actual sensors measurements to detect failure. A sequential decision-making sequence for failure detection is proposed.
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Baruh et al. (1987) studied this question.
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