H∞ Loop-Shaping Robust Controller Design of Anesthesia System

Robustness is the capability of a designed control system to preserve its stability and effectiveness in different conditions. This work inscribes a case study for designing a highly robust controller for the depth of anesthesia (DoA) motivated by means of the drug Propofol. The H infinity loop-shaping technique is utilized to layout the controller design for Propofol dosing using Bispectral Index (BIS) model. The veracity of the proposed method is proved by numerical simulations. Moreover, the proposed method can attain the design requirements and have a fully tracking performance. In addition to the advantages of loop shaping method, the easy realization is considered as another advantage of loop shaping. The simulation results show the superiority of the intended method in terms of simple structure, robust tracking performance, and control effort.