Failure Detection, Identification and Reconfiguration in Flight Control

In this chapter we describe issues arising in Failure Detection, Identification and Reconfiguration (FDIR) in flight control. The fault accommodation problem is stated and discussed, followed by the derivation of models of sensor and control effector failures and structural damage. Corresponding FDIR schemes that minimize the effect of different failures and structural damage are presented next, and their properties are illustrated through numerical simulations of advanced combat aircraft. At the end, an Integrated FDIR scheme is discussed consisting of on-line health monitoring and status determination system combined with the proposed FDIR algorithms.

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