Fault tolerant control of unstable LPV systems subject to actuator saturations using virtual actuators
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10.1016/j.ifacol.2015.09.498
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/81653
Tipus de documentText en actes de congrés
Data publicació2015
EditorInternational Federation of Automatic Control (IFAC)
Condicions d'accésAccés restringit per política de l'editorial
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Abstract
An active fault tolerant control (FTC) strategy for open-loop unstable linear parameter varying (LPV) systems subject to actuator saturations and faults is proposed in this paper. At first, the nominal controller is designed using a direct approach that takes into account the actuator limits. Later, virtual actuators are added to the control scheme, such that the faulty plant is reconfigured, and the fault is hidden from the controller point of view. Conditions for designing the virtual actuator gains are designed, aiming at guaranteeing that if at the fault isolation time the closed-loop system state is inside a region defined by a value of the Lyapunov function, the state trajectory will converge to zero despite the appearance of faults within a predefined set. The theoretical results are demonstrated using a numerical example. An active fault tolerant control (FTC) strategy for open-loop unstable linear parameter varying (LPV) systems subject to actuator saturations and faults is proposed in this paper. At first, the nominal controller is designed using a direct approach that takes into account the actuator limits. Later, virtual actuators are added to the control scheme, such that the faulty plant is reconfigured, and the fault is hidden from the controller point of view. Conditions for designing the virtual actuator gains are designed, aiming at guaranteeing that if at the fault isolation time the closed-loop system state is inside a region defined by a value of the Lyapunov function, the state trajectory will converge to zero despite the appearance of faults within a predefined set. The theoretical results are demonstrated using a numerical example. An active fault tolerant control (FTC) strategy for open-loop unstable linear parameter varying (LPV) systems subject to actuator saturations and faults is proposed in this paper. At first, the nominal controller is designed using a direct approach that takes into account the actuator limits. Later, virtual actuators are added to the control scheme, such that the faulty plant is reconfigured, and the fault is hidden from the controller point of view. Conditions for designing the virtual actuator gains are designed, aiming at guaranteeing that if at the fault isolation time the closed-loop system state is inside a region defined by a value of the Lyapunov function, the state trajectory will converge to zero despite the appearance of faults within a predefined set. The theoretical results are demonstrated using a numerical example.
CitacióRotondo, D., Ponsart, J., Theilliol, D., Nejjari, F., Puig, V. Fault tolerant control of unstable LPV systems subject to actuator saturations using virtual actuators. A: IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes. "SAFEPROCESS 2015- 9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, 2-4 september, Paris (France)". París: International Federation of Automatic Control (IFAC), 2015, p. 1-6.
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Rotondo SAFE 2015.pdf | 187,7Kb | Accés restringit |