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Lower cost permanent magnet-biased active magnetic bearings

Lower cost permanent magnet-biased active magnetic bearings

Active magnetic bearing systems have many advantages – reduced power consumption compared to fluid film bearings, high reliability, elimination of oil supply systems, diagnostic capabilities, long-term reduced operating costs, and many more.  However, one of the challenges justifying active magnetic bearing selection in new designs is the up-front cost. RBSI has developed new active magnetic […]

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AMB Controls for Mechanical Engineers

AMB Controls for Mechanical Engineers

A few years ago, members of the RBSI team were looking for a way to explain magnetic bearing controls to mechanical engineers that may not have a deep controls background.  We decided to write a paper on an active magnetic bearing supported rigid rotor using proportional-derivative (PD) controls.  By using this method, we could recast […]

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