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Model-Free Temperature Control of Heat Treatment Process

Author

Listed:
  • Andrei Baciu

    (Department of Automatic Control and Applied Informatics, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania)

  • Corneliu Lazar

    (Department of Automatic Control and Applied Informatics, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania)

Abstract

The heat treatment temperature must precisely meet the required profile to ensure the quality of the workpiece. The model of the heat treatment furnace is not precisely known because it is nonlinear and complex. Considering this aspect, model-free temperature control methods are proposed, which are not based on a model of the process, but only on the input and output data acquired from the control system. Since the controlled temperature must accurately track the reference formed by the ramp and soak signals in the presence of disturbances, model-free iPI controllers were chosen due to the included double-integral component that ensures the steady-state performance for ramp signals. For the tuning of the iPI controller parameters, the iterative feedback tuning method is proposed, and the performance is compared with that obtained using the sliding mode control iPI variant. The proposed iPI control laws are tested for ramp and soak scenarios, using temperature suitable to thermal treatment technological processes, and performance is analyzed using both process-specific indices and classical criteria.

Suggested Citation

  • Andrei Baciu & Corneliu Lazar, 2024. "Model-Free Temperature Control of Heat Treatment Process," Energies, MDPI, vol. 17(15), pages 1-21, July.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:15:p:3679-:d:1443101
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    References listed on IDEAS

    as
    1. Quanmin Zhu & Ruobing Li & Jianhua Zhang, 2023. "Model-free robust decoupling control of nonlinear nonaffine dynamic systems," International Journal of Systems Science, Taylor & Francis Journals, vol. 54(13), pages 2590-2607, October.
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