Abstract
Classical and advanced hybridization methods are employed in the control literature to calibrate the tuning parameters of internal model control (IMC) and proportional-integral-derivative (PID) controllers. This paper presents an alternative tuning design for the generalized predictive controller (GPC) that is based on both the positional process model and cost function. The proposed method involves the selection of an integral polynomial weighting filter for reference and output signals to deal with reference tracking, disturbance rejection, model-plant mismatch (MPM), minimum control energy and closed-loop robustness. The filter positional GPC (FP-GPC) obtained is transformed into a two-degree-of-freedom polynomial filtered RST structure and then into filtered internal model control (F-IMC) and PID controllers. Also, a multi-objective optimization based on genetic algorithm is applied to tune the filter parameters. Numerical and experimental essays show the effectiveness of the proposed control methodology.
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Communicated by Jose Roberto Castilho Piqueira, Elbert E N Macau, Luiz de Siqueira Martins Filho.
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Araújo, R.D.B., Coelho, A.A.R. Hybridization of IMC and PID control structures based on filtered GPC using genetic algorithm. Comp. Appl. Math. 37, 2152–2165 (2018). https://doi.org/10.1007/s40314-017-0444-y
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DOI: https://doi.org/10.1007/s40314-017-0444-y
Keywords
- Generalized predictive controller
- Internal model controller
- PID control
- Stability analysis
- Control accuracy
- Robustness analysis