PRELIMINARY STUDY ON BEARING AND BALANCING FAULT SIMULATOR

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PRELIMINARY STUDY ON BEARING AND BALANCING FAULT SIMULATOR
CONTENTS
ABSTRACT
INTRODUCTION
LITERATURE SURVEY
METHODOLOGY
RESULTS
CONCLUSION
FUTURE WORK
BIBLIOGRAPHY
ABSTRACT
Bearing and balancing fault simulator helps to support the study of bearing faults and unbalance under controlled conditions.
It can be used to generate each type of faults individually or in combination, providing stable platform for study.
Our present work involves determining results for newly fabricated test rig operating under various speed.
Various results are obtained such as
Shaft center line during various speed.
Orbit plots.
Bodes plot.
Waterfall spectrum.
Full spectrum.
INTRODUCTION
Today s industry uses increasingly complex rotating machines, some with extremely demanding performance criteria.
The root cause of faults in rotating machinery is often due to faulty bearing.
One way to increase operational reliability and thereby increase machine availability is to monitor faults in these bearings.
It is essential to have a throughout understanding of the associated fault signatures that occur under a variety of operating conditions.
Bearing and balancing fault simulator is portable, robust, cost-effective ,balance and bearing vibration trainer.
It develop signal processing techniques to identify bearing fault frequencies in the presence of defects.
HISTORY
Before observer based fault detection method were used i.e., model based approaches.
In this fault were detected when predetermined threshold levels assigned to each residual level are reached.
Willsky gave a comprehensive survey of design methods for bearing fault detection in 1976 but it was only for linear system.
But with the advance of mathematic, computers and software programs more complex problems such as vibration, cracks, minute defect in parts were able to detect and solve .