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arXiv · 2507.16553

Integral action for bilinear systems with application to counter current heat exchanger

Francesco Ripa·Daniele Astolfi·Boussad Hamroun·Diego Regruto
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Abstract

In this study, we propose a robust control strategy for a counter-current heat exchanger. The primary objective is to regulate the outlet temperature of one fluid stream by manipulating the flow rate of the second counter-current fluid stream. By leveraging the energy balance equations, we develop a structured bilinear system model derived by using a uniform spatial discretization of each stream into a cascade of homogeneous volumes and by considering the heat transfer and convective phenomena within the exchanger. We introduce two control strategies: (i) an output feedback controller incorporating a state observer and (ii) a purely integral control law. The effectiveness of the proposed control strategy is validated through real experiments on a real heat exchanger.

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Francesco Ripa, Daniele Astolfi, Boussad Hamroun, Diego Regruto. 2025-07-22. Integral action for bilinear systems with application to counter current heat exchanger. https://arxiv.org/abs/2507.16553

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