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Design of an integrated actuator fault-tolerant control under robust performance requirements

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Abstract The paper concerns a development of an integrated design of fault estimation and control scheme within an integrated actuator fault-tolerant control framework. The integrated design boils down to avoiding… Click to show full abstract

Abstract The paper concerns a development of an integrated design of fault estimation and control scheme within an integrated actuator fault-tolerant control framework. The integrated design boils down to avoiding a standard three-step fault diagnosis (detection, isolation, identification) and replacing it by a fault estimation. Subsequently, the inaccuracies caused by fault estimation are taken into account while designing fault-tolerant controller. Contrarily to the usual framework, which extends the set of disturbances/noise by such inaccuracies, they are taken into account individually in such a way as to achieve a well-balanced final control effect. Finally, a complete fault-tolerant design procedure is provided along with its convergence analysis. The last part of the paper shows the performance of the proposed approach using a DC-servo motor benchmark example.

Keywords: fault tolerant; control; actuator fault; design; fault; integrated actuator

Journal Title: IFAC-PapersOnLine
Year Published: 2020

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