Computers and Industrial Engineering
Application of an intelligent classification method to mechanical fault diagnosis
Expert Systems with Applications: An International Journal
Intelligent diagnosis method for a centrifugal pump using features of vibration signals
Neural Computing and Applications
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This paper proposes a new condition diagnosis method for plant machinery using Fisher's linear discriminant and possibility theory. The non-dimensional symptom parameters (NSPs) are defined to reflect the features of the vibration signals measured in each state. Fisher's linear discriminant is used to project the multiple SPs from a high dimensional space to a low dimensional space for distinguishing states, and discriminant rules are set by possibility theory. Moreover, sequential diagnosis is also proposed by which the conditions of the machinery can be identified sequentially. Sensitive evaluation method for selecting good symptom parameters using Distinction Index (DI) is also suggested for detecting faults in rotating machinery. Finally, practical examples of the diagnosis for rotating machine are shown to verify the efficiency of the method.