Abstract
Closed-loop controllers for insulin pumps have been on the market for some time. It has been shown that modified PID or MPC control algorithms are best suited for artificial pancreas. However, due to nonnegative control values only and relatively slow dynamics of the response to insulin input, they are not well equipped to deal with hypoglycemia induced by a physical effort. This paper is focused on that aspect of blood glucose control. Two alternative solutions are proposed and compared. The first one is based on feedforward, with additional information about future physical effort entered by the user. The second approach uses an additional control in the form of glucagon. Simulation is run for a fixed scenario of three meals and additional physical effort that affects the insulin-glucose system for a cohort of virtual patients, for whom model parameters were sampled. Performance of control systems is evaluated with several quality indicators.
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This work was supported by the SUT internal grant for young researchers (AW) and the SUT internal grant 02/040/BK_21/1022.
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Śmieja, J., Wyciślok, A. (2022). Two-Dimensional vs. Scalar Control of Blood Glucose Level in Diabetic Patients. In: Pietka, E., Badura, P., Kawa, J., Wieclawek, W. (eds) Information Technology in Biomedicine. ITIB 2022. Advances in Intelligent Systems and Computing, vol 1429. Springer, Cham. https://doi.org/10.1007/978-3-031-09135-3_43
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