Actuator fault tolerance evaluation approach of nonlinear model predictive control systems using viability theory
In this paper, an approach to evaluate the actuator fault tolerance of a nonlinear model predictive control (NMPC) system using viability theory is proposed. Viability theory provides several concepts formulated in a set form (viability kernel and capture basin) that are very useful to assess if aft...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2018 |
| 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:2117/130314 |
| Acceso en línea: | https://hdl.handle.net/2117/130314 https://dx.doi.org/10.1016/j.jprocont.2018.08.006 |
| Access Level: | acceso abierto |
| Palabra clave: | System failures (Engineering) Fault tolerance (Engineering) Fault tolerance evaluation Viability theory Set invariance theory Model predictive control Linear parameter varying system Errors de sistemes (Enginyeria) Tolerància als errors (Enginyeria) Àrees temàtiques de la UPC::Informàtica::Automàtica i control |
| Sumario: | In this paper, an approach to evaluate the actuator fault tolerance of a nonlinear model predictive control (NMPC) system using viability theory is proposed. Viability theory provides several concepts formulated in a set form (viability kernel and capture basin) that are very useful to assess if after the fault the NMPC controller will be able to achieve their goal either using a reconfiguration or an accommodation strategy. By representing the nonlinear model of the system in a linear parameter varying (LPV) form and using zonotopes to evaluate viability sets, an algorithm is developed and implemented that is able to assess the tolerance of the NMPC controller. To illustrate the proposed approach two application examples based on well-known control problems (a pasteurization plant and a mobile robot) are used |
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