FAULT DETECTION BASED ON NOISE POWER ESTIMATION FOR CRYOGENIC COLD COMPRESSORS WITH ACTIVE MAGNETIC BEARINGS

Pasquale Arpaia, Luca De Vito, Mario Girone, Marco Pezzetti

Abstract

This paper deals with the detection of faults in a cryogenic cold compressor equipped with active magnetic bearings (AMB). In particular, a fault detection technique based on noise power estimation is proposed. The technique operates on frequency response measurements, commonly provided by the control card of AMB systems, and therefore do not need for additional sensors or instruments.<BR />Preliminary experiments, carried out on a cold compressor installed in the Large Hadron Collider (LHC) cryogenic system at the European Organization for Nuclear Research (CERN), are presented.

Keywords

active magnetic bearings, fault detection, noise power estimation

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IMEKO-WC-2015-TC16-330.pdf

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IMEKO TC

TC16 - Pressure and Vacuum Measurement

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