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Actuator Fault Compensation Based on a Takagi-Sugeno PI Observer: Application to a Thermoelectric Steam Generator

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Abstract

In this paper, a fault-tolerant control scheme is presented for a boiler-turbine unit of a thermal power plant covering a wide range of operations: at low, medium, and high loads. The approach is based on the use of an observer-based actuator fault estimation system to detect and estimate the fault magnitude for a posteriori compensation via a fault-tolerant control scheme. The performance of both, the observer for actuator fault estimation and the fault-tolerant control scheme are evaluated in a practical scenario using a simulator of the dynamics of the critical variables of the process: the main steam flow, the first stage turbine pressure, the super-heated steam pressure, the drum pressure, and the electric power. The main contribution of this work is to develop an integral, practical methodology for analysis and design of a simultaneous actuator fault estimation and fault-tolerant control system for nonlinear processes. The originality with respect to other works is the regulation of the electric power demand in a thermometric steam generator by means of a fault-tolerant control (FTC) approach. The FTC is based on the knowledge of the fault magnitude on actuators via an observer-based fault estimation scheme. On the other hand, the use of the Takagi-Sugeno approach allows to extend these results to a wider variety of processes with strong nonlinear dynamics.

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Acknowledgements

The authors acknowledge CONACYT for supporting Jesús Reyes-Martínez through a Ph.D. Scholarship.

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Authors and Affiliations

  1. Tecnológico Nacional de México/CENIDET, Int. Internado Palmira s/n, Col. Palmira, 62490, Cuernavaca, Mor, Mexico

    J. Reyes-Martínez, C.-M. Astorga-Zaragoza, G. Madrigal-Espinosa, R.-A. Vargas-Méndez, G.-L. Osorio-Gordillo & J. Reyes-Reyes

  2. Instituto Nacional de Electricidad y Energías Limpias (INEEL), Reforma 113, Col. Palmira, Cuernavaca, Mor, Mexico

    G. Madrigal-Espinosa

  3. Université Paris-Saclay, IBISC, University Evry Val d’Essonne, Evry, France

    M. Chadli

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  1. J. Reyes-Martínez
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  2. C.-M. Astorga-Zaragoza
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  3. G. Madrigal-Espinosa
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  4. M. Chadli
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  5. R.-A. Vargas-Méndez
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  6. G.-L. Osorio-Gordillo
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  7. J. Reyes-Reyes
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Correspondence to C.-M. Astorga-Zaragoza.

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Reyes-Martínez, J., Astorga-Zaragoza, CM., Madrigal-Espinosa, G. et al. Actuator Fault Compensation Based on a Takagi-Sugeno PI Observer: Application to a Thermoelectric Steam Generator. Int. J. Fuzzy Syst. 24, 855–866 (2022). https://doi.org/10.1007/s40815-021-01154-2

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  • DOI: https://doi.org/10.1007/s40815-021-01154-2

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