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Fractional PID Controller Applied to a Chemical Plant with Level and pH Control

  • Renato Aparecido Aguiar , Ivan Carlos Franco EMAIL logo , Fabrizio Leonardi und Fábio Lima
Veröffentlicht/Copyright: 26. Mai 2018
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Abstract

One of the most important processes in the chemical, biological and petrochemical industries is the control of the potential of hydrogen (pH). As it is a multivariable process and non-linear, pH control gives rise to many challenges for designers in both dynamic responses and robustness issues. Despite all this complexity, in many circumstances pH control is performed by using a conventional proportional integral derivative (PID) control, which is very common in industry. This paper proposes using a fractional-order PID to improve the pH control performance of a lab-scale process, as it is more flexible, i. e., there is a higher number of variables to be adjusted. Results from a simulation have been compared to those from both conventional and fractional-order PID controls, which has shown the better performance of the latter related to important metrics such as the control effort and dynamic response of the controlled variables.

Acknowledgements

The authors would like to thank FEI University for the support provided.

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Received: 2018-01-21
Revised: 2018-05-17
Accepted: 2018-05-18
Published Online: 2018-05-26

© 2018 Walter de Gruyter GmbH, Berlin/Boston

Heruntergeladen am 30.11.2025 von https://www.degruyterbrill.com/document/doi/10.1515/cppm-2018-0004/pdf
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