Omni-Directional Regeneration (ODR) of Gap Sensor Signal for Journal Bearing System Diagnosis

Byungchul Jeon, Byeng D. Youn, Donghwan Kim, and Yeonwhan Kim
Submission Type: 
Full Paper
phmc_15_029.pdf635.82 KBAugust 16, 2015 - 5:03pm

We have developed a technique that enhances the detectability of sensors in a journal bearing rotor system. Usually, at an axial position for the rotating shaft on a journal bearing system, two sensors are fixed in radial direction at a right angle. The conventional diagnosis researches use only the acquired signals. However, two fixed sensors may not give sufficient information for diagnosis of the system since anomalies can happen in arbitrary direction. To improve the robustness of the diagnosis, coordinate transformed gap sensor signal is generated in arbitrary direction without installing extra sensors or adjusting sensor positions. The generated signals are used in the process of diagnosis with the original signals. The powerful but simple method is described in the paper, and is verified by data sets from the experiment.

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Submission Keywords: 
data-driven phm
signal processing
Journal Bearing
Submission Topic Areas: 
Data-driven methods for fault detection, diagnosis, and prognosis
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