Title :
A fault tolerant closed-loop anesthesia system based on internal model control and extended state observer
Author :
Yuan Tao ; Mengqi Fang ; Youqing Wang
Author_Institution :
Coll. of Inf. Sci. & Technol., Beijing Univ. of Chem. Technol., Beijing, China
Abstract :
This paper proposes a fault tolerant strategy for a closed-loop anesthesia system. To the authors best knowledge, it is the first time that the concept of fault tolerance applied to intravenous anesthesia. Internal model control (IMC) is used to construct the basic closed-loop system, and bispectral index (BIS) is selected as a measurement of patients depth of anesthesia (DoA) as well as a feedback signal. In this study, a sensor fault, BIS artifact, is considered. An extended state observer (ESO) and a switching strategy are selected for fault detection and control reconfiguration. All of the above mentioned works are established on a closed-loop aesthesia simulation platform. Simulation results demonstrate that the proposed scheme can deal with the considered kind of fault effectively.
Keywords :
closed loop systems; fault tolerance; medical control systems; observers; sensors; BIS; ESO; IMC; bispectral index; closed loop system; control reconfiguration; extended state observer; fault detection; fault tolerant closed-loop anesthesia system; fault tolerant strategy; internal model control; intravenous anesthesia; patient depth-of-anesthesia measurement; sensor fault; switching strategy; Anesthesia; Control systems; Drugs; Fault tolerance; Fault tolerant systems; Mathematical model; Observers; Closed-loop Aesthesia; Extended State Observer; Fault Tolerant Control; Internal Model Control;
Conference_Titel :
Control and Decision Conference (CCDC), 2013 25th Chinese
Conference_Location :
Guiyang
Print_ISBN :
978-1-4673-5533-9
DOI :
10.1109/CCDC.2013.6561823