Correlation-based fault-tolerant controller design for MIMO systems under the Youla parameterisation

Zhe Li and Guang-Hong Yang

International Journal of Systems Science, 2017, vol. 48, issue 6, 1162-1172

Abstract: This paper develops a correlation-based method into the Youla parameterisation structure for a fault-tolerant controller design strategy. By tuning the Youla parameters with the proposed correlation-based algorithm, a number of conditional faults described by the dual Youla parameters are attenuated. The traditional fault-tolerant control (FTC) schemes under the Youla parameterisation often require the gradient information of the defined cost function for minimisation, which is either tedious or even unfeasible with unknown fault model. However, the proposed correlation-based FTC algorithm in this paper can compensate the faults via system data without the explicit fault model or the cost function gradient information. It is also proved that the algorithm convergence can be achieved without identifying the unknown fault model. For illustration, a simulation example with corresponding comparisons are presented to show the effectiveness of the proposed method in the end.

Date: 2017
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DOI: 10.1080/00207721.2016.1244304

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