Title :
Uncertainty modeling for robustness analysis of failure detection and accommodation systems
Author :
Belcastro, Christine M. ; Chang, B.C.
Author_Institution :
NASA Langley Res. Center, Hampton, VA, USA
Abstract :
Formal robustness analysis of failure detection and accommodation systems could play an important role in their validation and ultimate certification. However, formulation of linear fractional transformation (LFT) models can be very difficult for complex parameter-dependent systems. The paper presents a matrix-based computational approach that can be implemented in software for obtaining LFT models of complex systems involving parametric uncertainties, faults, and failures. Several examples are presented, including, a modeling framework for performing robustness analyses of faulty uncertain systems and failure detection and accommodation systems.
Keywords :
aircraft control; fault diagnosis; fault tolerance; matrix algebra; robust control; uncertain systems; failure accommodation; failure detection; faulty uncertain systems; linear fractional transformation models; matrix-based computational approach; parametric uncertainties; robustness analysis; uncertainty modeling; Equations; Erbium; Failure analysis; Filters; Polynomials; Robust control; Robust stability; Robustness; Transfer functions; Uncertainty;
Conference_Titel :
American Control Conference, 2002. Proceedings of the 2002
Print_ISBN :
0-7803-7298-0
DOI :
10.1109/ACC.2002.1025414
