Paper Info
Title
Multiple fault disambiguations through parameter estimation: a bond graph model-based approach
Abstract
To ensure safe operation of industrial processes, automated Fault Detection and Isolation (FDI) procedures are implemented in their supervision platforms. In the safety-critical and environmentally hazardous processes, it is impossible to introduce all kinds of faults and then to derive their consequences. Qualitative determination of consequences of different faults can be misleading in complex dynamical systems. Therefore, simulation of a prototype model turns out to be a practical and an economical solution for the development of a complete Knowledge-Base (KB). Consequently, the intelligence acquired by KB from the simulated models is used to fine-tune the Decision Support System (DSS) such that false alarms and misdetections are minimised. A method for model-based multiple FDI by using Analytical Redundancy Relations (ARRs) and parameter estimation is developed in this paper. Parameter estimation is an essential prerequisite for fault accommodation through system reconfiguration or Fault Tolerant Control (FTC). Bond graph modelling is used to describe the process models and then the model is used to derive the ARRs and fault candidates. Parameter values corresponding to the fault-subspace are estimated by minimising a function of the ARRs. Modelling uncertainties arising out of parameter estimation and sensor noise are taken care by using a passive approach for robust FDI. The developed technique is applied to monitor an open-loop non-linear thermo-fluid process.
Year
DOI
Venue
2008
10.1504/IJISTA.2008.018172
IJISTA
Keywords
Field
DocType
multiple fault disambiguations,automated fault detection,parameter value,developed technique,model-based multiple fdi,parameter estimation,fault tolerant control,robust fdi,bond graph modelling,bond graph model-based approach,fault accommodation,different fault,simulation,fdi,bond graphs,dss,fault detection and isolation,bond graph,decision support systems
Fault detection and isolation,Control engineering,Fault tolerance,Redundancy (engineering),Engineering,Bond graph,Estimation theory,System identification,Reactive system,Fault model
Journal
Volume
Issue
Citations 
5
1/2
1
PageRank 
References 
Authors
0.38
6
2
Name
Order
Citations
PageRank
S. K. Ghoshal1165.20
A. K. Samantaray2203.51