Open AccessObserver‐based resilient finite‐time control of blood gases model during extra‐corporeal circulation
Author(s) -
Sakthivel Rathinasamy,
Joby Maya,
Kwon Ohmin
Publication year - 2018
Publication title -
iet systems biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.367
H-Index - 50
eISSN - 1751-8857
pISSN - 1751-8849
DOI - 10.1049/iet-syb.2017.0083
Subject(s) - control theory (sociology) , observer (physics) , controller (irrigation) , interval (graph theory) , lyapunov stability , lyapunov function , mathematics , computer science , process (computing) , control (management) , physics , nonlinear system , artificial intelligence , quantum mechanics , combinatorics , agronomy , biology , operating system
This study aims at designing an observer‐based resilient controller to regulate the amount of oxygen and carbon dioxide in the blood of patients during the extra‐corporeal blood circulation process. More precisely, in this study, a suitable observer‐based resilient controller is constructed to regulate the levels of patient blood gases in a finite interval of time. The finite‐time boundedness with the prescribed H ∞ performance index of the considered blood gases control system against modelling uncertainty and external disturbances is ensured by using Lyapunov stability analysis. Moreover, a set of sufficient conditions for obtaining the controller gain is developed in the form of linear matrix inequalities (LMIs). Finally, the effectiveness of the proposed robust finite‐time control scheme is verified through simulation results. The result reveals that the blood gases are maintained in their physiological ranges during a stable extra‐corporeal circulation process via the proposed observer‐based resilient controller.