Estimation of changing vibration conditions of complicated mechanisms using vibration characteristics of start-ups and run-downs

Abstract

The paper considers the automation strategy for the comparative analysis procedure of the startup and rundown vibration characteristics. A number of parameters has been selected that describe the amplitude factors and distinctive features of these characteristics’ shapes. The decision functions are proposed to conclude regarding similarity or difference of the comparable characteristics. The paper discusses the practical examples of estimating the vibration conditions of the bearing assemblies in some turbo machinery are presented. In the considered cases, while the changes in the vibration intensity in the stationary mode were relatively insufficient, the rundown vibration characteristics varied substantially.