Design of nonlinear observers for detecting faults in hydraulic sub-sea pipelines

Firstly, a general nonlaminar model is considered for pipeline dynamics, including a treatment of faults caused by pipe restrictions. For three cases results are given for stability, robustness and fault detectability of a combined observer and residual (fault detection signal). An efficient numeric...

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Bibliographic Details
Published in:Control engineering practice 2001-03, Vol.9 (3), p.297-311
Main Authors: Shields, D.N., Ashton, S.A., Daley, S.
Format: Article
Language:English
Subjects:
Fault detection
Hydraulic pipelines
Nonlinear
Observer
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Summary:Firstly, a general nonlaminar model is considered for pipeline dynamics, including a treatment of faults caused by pipe restrictions. For three cases results are given for stability, robustness and fault detectability of a combined observer and residual (fault detection signal). An efficient numerical design algorithm is proposed. The method is applied to an actual experimental pipeline (rig system) which is set up to model a sub-sea umbilical. Results on modelling and on observer and residual (signal) design are given. The effectiveness of the design is tested by inducing two types of fault on the rig system.
ISSN:0967-0661
1873-6939
DOI:10.1016/S0967-0661(00)00113-1