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oai:recercat.cat:2117/260592026-02-06T03:50:04Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Rotondo, Damiano author Nejjari Akhi-Elarab, Fatiha author Puig Cayuela, Vicenç author Blesa Izquierdo, Joaquim author 2014-10-20 In this paper, a model reference fault tolerant control (FTC) strategy based on a reconfiguration of the reference model, with the addition of a virtual actuator block, is presented for linear parameter varying (LPV) systems. The advantage of the proposed FTC method is that the control system is reconfigured in such a way that the nominal controller is used without the need of retuning it. Moreover, the presence of saturations is taken into account through their incorporation in the reference model, and the introduction of additional varying parameters, such that the system exhibits some graceful performance degradation when the system could not achieve the desired state because of the actuator limits. The design of the control scheme is based on linear matrix inequalities (LMIs) and polytopic LPV techniques. In order to implement the proposed active FTC strategy, a fault estimation is required. In this paper, the fault estimation is formulated as a parameter estimation problem, which is solved using a set-membership approach. An aeronautical application is used to assess the performance of the proposed approach. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Informàtica::Automàtica i control Fault-tolerant computing fault tolerant control linear parameter varying virtual actuators linear matrix inequalities model reference control set-membership Tolerància als errors (Informàtica) Model reference FTC for LPV systems using virtual actuators and set-membership fault estimation