28
March
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 the problem as a spring-mass-damper system for rotor translation and rotor tilt. The rotor tilt includes the system gyroscopics, so the results are very general for rigid rotors. We showed how this system relates to more conventional bearing supports, such as fluid film bearings, and some of the key differences.
For more info, look at our recent paper:
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