Reconfiguration of an industrial steam generator using bond graph modelling. (23rd July 2007)

• Record Type: Journal Article
• Authors: Samantaray, A.K.; Ghoshal, S.K.; Medjaher, K.; Bouamama, B. Ould
• Is Part Of: International journal of modelling, identification and control. Volume 2:Number 2(2007)
• Page Start: 154
• Page End: 168
• Publication Date: 2007-07-23
• Subjects: bond graph modelling -- analytical redundancy -- fault signature -- fault detection -- fault isolation -- operating mode -- fault tolerant control -- fault accommodation -- reconfiguration -- industrial steam generators -- fault diagnosis; Engineering -- Methodology -- Periodicals; Science -- Methodology -- Periodicals; 001.42
• Languages: English
• ISSNs: 1746-6172

Abstract

In this paper, we survey some recent advances made in the field of Bond Graph (BG) modelling and show that it is well suited to solve modelling, fault diagnosis and Fault Tolerant Control (FTC) problems in complex processes. We consider the reconfiguration scheme for a steam generator process, which is a safety-critical complex thermo-fluid process involving storage and transport of under saturated and saturated fluids, as well as phase transformations. BG modelling, which is a unified tool for multienergy domain system representation, is not only used to model the process but also to generate the fault indicators and to determine various redundancies. These redundancies are then used to determine possible system reconfigurations and Operating Modes (OMs), by taking various operating constraints (equipment availability, saturations, power ratings, etc.) into consideration. The developed algorithms are implemented to supervise the steam generator process and the experimental results are presented.