Combining set-theoretic UIO and invariant sets for optimal guaranteed robust fault detection and isolation
This paper proposes an optimal guaranteed robust fault detection and isolation (FDI) method combing the set-theoretic unknown input observer (SUIO) and the robust positively invariant (RPI) sets for linear time-invariant (LTI) systems. The optimality of the proposed FDI method is achieved under a tw...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/178385 |
| Acceso en línea: | https://hdl.handle.net/2117/178385 https://dx.doi.org/10.1016/j.jprocont.2019.04.004 |
| Access Level: | acceso abierto |
| Palabra clave: | Fault tolerance (Engineering) Guaranteed fault detection and isolation Optimality Set-theoretic unknown input observer Invariant sets Errors de sistemes (Enginyeria) -- Models matemàtics Tolerància als errors (Enginyeria) Àrees temàtiques de la UPC::Informàtica::Automàtica i control |
| Sumario: | This paper proposes an optimal guaranteed robust fault detection and isolation (FDI) method combing the set-theoretic unknown input observer (SUIO) and the robust positively invariant (RPI) sets for linear time-invariant (LTI) systems. The optimality of the proposed FDI method is achieved under a two-layer framework. The first layer allows to design a single optimal FDI-oriented SUIO with RPI set separation-based guaranteed FDI conditions to reduce the FDI conservatism of single observer. The second layer consists in designing an optimal observer configuration for a bank of optimal SUIOs to reduce the FDI conservatism of all the SUIOs together. Finally, the effectiveness of the proposed guaranteed robust FDI method is illustrated by using a four-tank system |
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