Blood Glucose Regulation in Diabetics Using H∞ Control Techniques

This paper presents a control algorithm for insulin delivery in Type I diabetic patients. The control algorithm utilize a robust H∞ controller to regulate the blood glucose level in diabetic patients. Diabetes mellitus is a family of chronic metabolic ailment in which body’s. In this study, Bergman’s minimal model has been used as a base model, to reformulate dynamics of insulin and glucose concentrations in blood’s plasma. To increase the functionalities of the glucose minimal model, some additions could be done. One of the additions is the exercise model. The performance of the resulting controller was tested on the nonlinear model of the process. The controller performance was evaluated in terms of its ability to mark a normoglycemic set point of 70mg/dl in presence of thrice daily meal disturbance and once daily exercise disturbance. A comparative study is given between our designed controller and the PID controller. The designed controller proved effective in achieving normoglycaemic and robust to meal and exercise disturbances.