Identification of Multiple Fault Parameters in a Rigid-Rotor and Flexible-Bearing-Coupling System: An Experimental Investigation

Rotating machineries are very common and widely used in the modern industrial world. A breakdown of the rotating machine may result in economic losses and even worse, in the damage of human beings. So it needs accurate and reliable prediction of its dynamic characteristic. The multiple fault identification algorithm developed in [1] identifies the bearing and coupling dynamic parameters along with residual unbalances in a rigid-rotor and flexible-bearing-coupling system has been validated experimentally in the present article. An indigenously developed test rig was used for the experimentation. After estimating multiple fault parameters the accuracy of estimated parameters has been checked by checking the consistency of the estimated parameters and by performing the standard impact test. It has been observed that with more number of measurements consistencies of the estimated parameters are very good.