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A Fuzzy Controller for Blood Glucose-Insulin System

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Author(s): Ahmed Y. Ben Sasi | Mahmud A. Elmalki

Journal: Journal of Signal and Information Processing
ISSN 2159-4465

Volume: 04;
Issue: 02;
Start page: 111;
Date: 2013;
Original page

Keywords: Diabetes | Blood Glucose | Closed-Loop | Continuous Insulin Infusion | PID Controller | Fuzzy Logic Controller

ABSTRACT
Diabetes therapy is normally based on discrete insulin infusion that uses long-time interval measurements. Nevertheless, in this paper, a continuous drug infusion closed-loop control system was proposed to avoid the traditional discrete approaches by automating diabetes therapy. Based on a continuous insulin injection model, two controllers were designed to deal with this plant. The controllers designed in this paper are: proportional integral derivative (PID), and fuzzy logic controllers (FLC). Simulation results have illustrated that the fuzzy logic controller outperformed the PID controller. These results were based on serious disturbances to glucose, such as exercise, delay or noise in glucose sensor and nutrition mixed meal absorption at meal time.
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