Diabetes Type 1 is caused when body is deficient of required insulin quantity to maintain blood glucose level; due to unavailability of Pancreatic
beta cells. Artificial Pancreas facilitates Type 1 diabetes Mellitus to have automatic stabilization of blood glucose level using some controller. In this research work, we have proposed Backstepping Sliding Mode Controller for Artificial Pancreas in Type 1 diabetes Mellitus.
We have used Extended Bergman’s Minimal Model that presents the relation between glucose and insulin for Type 1 Diabetic patient with fixed known meal disturbance but have meal disturbance as a 4th state. Then we designed Lyapunov based robust backstepping nonlinear controller for stabilization of blood-glucose level.
The analysis through Lyapunov theory proves the global asymptotic stability of the system. The proposed controller has been compared with PID controller in MATLAB/Simulink.
The performance of the proposed controller has been proved to be far better than conventional PID controller.