KEM 2009 DOI: 10.4028/www.scientific.net/kem.413-414.521 View full text
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F. Lu, Qian Chen

Abstract: This paper presents an initiative research work that applies cointegration testing method to the condition monitoring and fault diagnosis of nonstationary dynamic engineering systems. The cointegration testing method seeks a linear combination of a set of nonstationary system variables which describes the dynamic equilibrium relations among them. The fact that the cointegrational model could be violated on the occurrence of a fault is utilised to detect abnormal conditions. The model residuals are processed an…

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