Sensor Fault Isolation in a Liquid Flow Process Using Kalman Filter

Investigation of the effect of sensor fault in liquid process loop and designing a suitable fault isolation technique using the Kalman filter is proposed in this work. The objective of the work is to design an observer to estimate the process parameters, so as to compare with sensor functionality an...

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Published inAutomatic control and computer sciences Vol. 53; no. 4; pp. 310 - 319
Main Authors Nanditha Nair, Santhosh, K. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2019
Springer Nature B.V
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ISSN0146-4116
1558-108X
DOI10.3103/S0146411619040072

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Abstract Investigation of the effect of sensor fault in liquid process loop and designing a suitable fault isolation technique using the Kalman filter is proposed in this work. The objective of the work is to design an observer to estimate the process parameters, so as to compare with sensor functionality and thus identify and isolate faults in sensor. Based on the derived system model, observer is designed using Kalman filter approach. The proposed system with observer is subject to test in simulation and validated using physical system. The designed observer was successfully able to isolate drift, short circuit and open circuit faults in sensor. Practical validation shows the system with observer was able to track the set point with the root mean square of 0.986% error, even with faulty sensor.
AbstractList Investigation of the effect of sensor fault in liquid process loop and designing a suitable fault isolation technique using the Kalman filter is proposed in this work. The objective of the work is to design an observer to estimate the process parameters, so as to compare with sensor functionality and thus identify and isolate faults in sensor. Based on the derived system model, observer is designed using Kalman filter approach. The proposed system with observer is subject to test in simulation and validated using physical system. The designed observer was successfully able to isolate drift, short circuit and open circuit faults in sensor. Practical validation shows the system with observer was able to track the set point with the root mean square of 0.986% error, even with faulty sensor.
Author Santhosh, K. V.
Nanditha Nair
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Keywords flow process
observer
sensor
fault isolation
Kalman filter
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SubjectTerms Circuit design
Computational fluid dynamics
Computer Science
Computer simulation
Control Structures and Microprogramming
Error detection
Fault detection
Kalman filters
Liquid flow
Parameter estimation
Parameter identification
Process parameters
Sensors
Short circuits
Title Sensor Fault Isolation in a Liquid Flow Process Using Kalman Filter
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