Automatic analysis methods of vibration parameters for diagnosis of marine rotating machines
Automatic diagnosis of important rotating equipment using vibration signal is one of the main ways to ensure their reliability and operational safety. Known methods for automatically processing vibration parameters for machinery diagnostics have insufficient effectiveness on shipboard. The reason for this is unstable vibration activity in steady operating modes, which requires increasing thresholds, and the mutual influence of neighboring mechanical components and machines, which leads to erroneous diagnoses. The article provides methods to solve these problems. The first threshold adaptation method allows timely detection and reasonable prediction of marine machinery condition deterioration. The second automatic diagnosis method allows determining causes of this condition deterioration. The diagnosis method does not depend on the type of machine and uses the configuration of diagnostic rules in table form. In addition, this method allows to use defects influence on vibration at spaced control points. Declared methods are successfully applied in diagnostics systems of rotating machines.