Title :
Sensor Fault Detection in Coupled Liquid Tanks System
Author :
Kousar, F. ; Abid, Mohamed ; Khan, Abdul Qayyum
Author_Institution :
Dept. of Electr. Eng., Pakistan Inst. of Eng. & Appl. Sci., Islamabad, Pakistan
Abstract :
As the field of automation is progressing, safer and reliable systems are highly desirable. Any malfunction in the plant result in reduced efficiency of the plant, reduced quality of the product and sometimes may result into fatalities. Therefore fault detection and process monitoring is becoming an integral part of modern control systems. The coupled liquid tank system is an experimental setup with nonlinear dynamics. The objective of this paper is to develop and implement fault detection techniques for coupled liquid tank system. The proposed scheme makes use of observer based residual generation and norm based residual evaluation. First system was linearized by Jacobian linearization and fault diagnosis system has been designed for the linearized system. Then this algorithm has been implemented on real plant and satisfactory results have been obtained.
Keywords :
fault diagnosis; industrial plants; linearisation techniques; nonlinear control systems; observers; process monitoring; sensors; tanks (containers); Jacobian linearization; control systems; coupled liquid tank system; fault diagnosis system; nonlinear dynamics; norm based residual evaluation; observer based residual generation; plant efficiency; process monitoring; sensor fault detection; Equations; Fault detection; Fault diagnosis; Jacobian matrices; Liquids; Mathematical model; Observers; Couple liquid tank syste; Model based; Observer based fault detection; Sensor fault detection;
Conference_Titel :
Frontiers of Information Technology (FIT), 2012 10th International Conference on
Conference_Location :
Islamabad
Print_ISBN :
978-1-4673-4946-8
DOI :
10.1109/FIT.2012.64
