Zonotopic fault estimation filter design for discrete-time descriptor systems
This paper considers actuator-fault estimation for discrete-time descriptor systems with unknown but bounded system disturbance and measurement noise. A zonotopic fault estimation filter is designed based on the analysis of fault detectability indexes. To ensure estimation accuracy, the filter gain...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| 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:2117/111333 |
| Acceso en línea: | https://hdl.handle.net/2117/111333 https://dx.doi.org/10.1016/j.ifacol.2017.08.945 |
| Access Level: | acceso abierto |
| Palabra clave: | Fault-tolerant computing Mathematical models Actuator fault descriptor systems discrete-time model set-based fault estimation zonotopes Tolerància als errors (Informàtica) Models matemàtics Àrees temàtiques de la UPC::Informàtica::Automàtica i control |
| Sumario: | This paper considers actuator-fault estimation for discrete-time descriptor systems with unknown but bounded system disturbance and measurement noise. A zonotopic fault estimation filter is designed based on the analysis of fault detectability indexes. To ensure estimation accuracy, the filter gain in the zonotopic fault estimation filter is optimized through the zonotope minimization. The designed zonotopic filter not only can estimate fault magnitudes, but it also provides fault estimation results in an interval, i.e. the upper and lower bounds of fault magnitudes. Moreover, the proposed fault estimation filter has a non-singular structure and hence is easy to implement. Finally, simulation results are provided to illustrate the effectiveness of the proposed method. |
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