On the solution to the state failure detection problem

Studies the problem formulated by Ge and Feng (Int. J. Contr., vol.47, p.581-600 (1988)), which is to design a set of observers which can detect and locate unknown system failure to any first-order state component. The present paper proposes a much simpler solution to this problem with less restrictions. Based on this solution, an extended study of the required number of observers and their orders is also provided.<
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