Design and Simulation of a Sliding Mode Control for Anesthesia

Abstract

This work presents the automation of the anesthesia infusion process, which allows us to respond quickly, safely and efficiently to possible emergencies that may arise during a surgical intervention. The design of the controller is specific for the infusion of Propofol, which is one of the most used anesthetics. The Higher Order Sliding Mode Control (HOSMC) technique is used, this technique was chosen, since the controller is designed only with the relative degree of the system, its notable characteristic of being insensitive to variations Parametric means that it can have the same efficiency for any patient regardless of the patient's age, sex, weight, height, illness, hydration level, which are important parameters that anesthesiologists consider to calculate the drug dose. Due to the above, its operation is faster compared to that of an anesthesiologist when an accident occurs. HOSMC is a robust controller, since when the patient reaches the desired anesthetic depth, the controller maintains the patient within that level, or within the allowable range even in the presence of surgical perturbations. To simulate the operation of the designed controller, Simulink from Matlab was used, where the controller was programmed.