Trabajo presentado en la 4th Conference on Control and Fault Tolerant Systems (SysTol), celebrada en Casablanca (Marruecos), del 18 al 20 de septiembre de 2019 ; This paper proposes a fault-tolerant control (FTC) strategy based on virtual actuators for discrete-time descriptor systems subject to multiplicative and additive actuator faults. The goal of this FTC strategy is to reconfigure the closed-loop system by means of a virtual actuator that allows maintaining the use of the nominal controller without having to retune it. To achieve this goal, we define the structure of a dynamical virtual actuator for descriptor systems including multiplicative and additive actuator faults. In order to use a state-feedback controller for implementing the FTC strategy, a state observer for descriptor systems is also defined. Under the proposed FTC scheme, the separation principle of the virtual actuator, the nominal closed-loop system and the state observer is established. Therefore, all the gains can be designed separately. Finally, a numerical example is provided to show the effectiveness of the proposed FTC strategy. ; This work has been partially funded by the Spanish State Research Agency (AEI) and the European Regional Development Fund (ERFD) through the project DEOCS (ref. DPI2016-76493-C3-3-R), the María de Maeztu Seal of Excellence to IRI (MDM-2016-0656), and the grant Juan de la Cierva-Formacion (FJCI-2016-29019), and by the ´ Fundamental Research Funds for the Central University (No. 3072019CFJ0406).
Fault-tolerant control of discrete-time descriptor systems using virtual actuators
2019-10-14
Conference paper
Electronic Resource
English
DDC: | 629 |
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