<abstract xmlns="http://www.w3.org/1999/xhtml"><p> This paper proposes two different health-aware economic predictive control strategies that aim at minimizing the damage of components in a pasteurization plant. The damage is assessed with a rainflow-counting algorithm that allows estimating the components’ fatigue. By using the results obtained from this algorithm, a simplified model that characterizes the health of the system is developed and integrated into the predictive controller. The overall control objective is modified by adding an extra criterion that takes into account the accumulated damage. The first strategy is a single-layer predictive controller with an integral action to eliminate the steady-state error that appears when adding the extra criterion. In order to achieve the best minimal accumulated damage and operational costs, the single-layer approach is improved with a multi-layer control scheme, where the solution of the dynamic optimization problem is obtained from the model in two different time scales. Finally, to achieve the advisable trade-off between minimal accumulated damage and operational costs, both control strategies are compared in simulation over a utility-scale pasteurization plant.</p></abstract>

This paper proposes two different health-aware economic predictive control strategies that aim at minimizing the damage of components in a pasteurization plant. The damage is assessed with a rainflow-counting algorithm that allows estimating the components’ fatigue. By using the results obtained from this algorithm, a simplified model that characterizes the health of the system is developed and integrated into the predictive controller. The overall control objective is modified by adding an extra criterion that takes into account the accumulated damage. The first strategy is a single-layer predictive controller with an integral action to eliminate the steady-state error that appears when adding the extra criterion. In order to achieve the best minimal accumulated damage and operational costs, the single-layer approach is improved with a multi-layer control scheme, where the solution of the dynamic optimization problem is obtained from the model in two different time scales. Finally, to achieve the advisable trade-off between minimal accumulated damage and operational costs, both control strategies are compared in simulation over a utility-scale pasteurization plant.

Multi-layer health-aware economic predictive control of a pasteurization pilot plant

International Journal of Applied Mathematics and Computer Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

This paper proposes two different health-aware economic predictive control strategies that aim at minimizing the damage of components in a pasteurization...

Multi-layer health-aware economic predictive control of a pasteurization pilot plant

Publié en ligne: 31 mars 2018

Pages: 97 - 110

Reçu: 31 janv. 2017

Accepté: 08 oct. 2017

DOI: https://doi.org/10.2478/amcs-2018-0007

Mots clés
model predictive control, two-layers control scheme, fatigue, economic optimization, health-aware controller

© by Vicenç Puig

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Multi-layer health-aware economic predictive control of a pasteurization pilot plant

Publié en ligne: 31 mars 2018

Pages: 97 - 110

Reçu: 31 janv. 2017

Accepté: 08 oct. 2017

DOI: https://doi.org/10.2478/amcs-2018-0007

Mots clésmodel predictive control, two-layers control scheme, fatigue, economic optimization, health-aware controller

© by Vicenç Puig

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
model predictive control, two-layers control scheme, fatigue, economic optimization, health-aware controller