Covid-19 and Flattening the Curve: A Feedback Control Perspective
Di Lauro, Francesco, Kiss, István Z., Rus, Daniela and Della Santina, Cosimo (2021) Covid-19 and Flattening the Curve: A Feedback Control Perspective. IEEE Control Systems Letters, 5 (4). pp. 1435-1440. ISSN 2475-1456
Abstract
Many of the policies that were put into place during the Covid-19 pandemic had a common goal: to flatten the curve of the number of infected people so that its peak remains under a critical threshold. This letter considers the challenge of engineering a strategy that enforces such a goal using control theory. We introduce a simple formulation of the optimal flattening problem, and provide a closed form solution. This is augmented through nonlinear closed loop tracking of the nominal solution, with the aim of ensuring close-to-optimal performance under uncertain conditions. A key contribution of this letter is to provide validation of the method with extensive and realistic simulations in a Covid-19 scenario, with particular focus on the case of Codogno - a small city in Northern Italy that has been among the most harshly hit by the pandemic.
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