Optimal fault signal estimation

A.A. Stoorvogel, H.H. Niemann, A. Saberi, P. Sannuti

Research output: Contribution to journalArticleAcademicpeer-review

54 Citations (Scopus)


We consider here both fault identification and fault signal estimation. Regarding fault identification, we seek either exact or almost fault identification. On the other hand, regarding fault signal estimation, we seek either 2 optimal, 2 suboptimal or 8 suboptimal estimation. By appropriate combination of these two aspects, we formulate five different fault identification and fault signal estimation problems. We analyse and synthesize appropriate residual generators for fault identification and estimators which generate fault signal estimates for all these problems. Solvability conditions for all these problems are given. Also, for each of these problems, the architecture of integrating the residual generator that isolates the fault and estimators that estimate the fault signals is developed.
Original languageEnglish
Pages (from-to)697-727
Number of pages31
JournalInternational Journal of Robust and Nonlinear Control
Issue number8
Publication statusPublished - 2002


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