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Zbl 1038.93062
Duan, G. R.; Howe, D.; Patton, R. J.
Robust fault detection in descriptor linear systems via generalized unknown input observers. (English)
[J] Int. J. Syst. Sci. 33, No. 5, 369-377 (2002). ISSN 0020-7721; ISSN 1464-5319/e

The robust residual generation in descriptor linear systems with unknown disturbances is considered using the generalized full-order state observers. A parametric approach is proposed for decoupling the effect of a disturbance from the residual signal. The approach is based on the state-feedback eigenstructure assignment for descriptor systems and the general disturbance decoupling problem in regular descriptor linear systems. An example shows the effect of the proposed approach.
[Tadeusz Kaczorek (Warszawa)]

MSC 2000:: *93C73 Perturbations in control systems
93B07 Observability
90B25 Reliability, etc.
34A09 Implicit equations
93B52 Feedback control
93B60 Eigenvalue problems in systems theory

Keywords: robust residual generation; descriptor linear systems; disturbances; full-order state observers; state feedback eigenstructure assignment; disturbance decoupling

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