Balancing of rotor suspended on magnetic bearings
Balancing of rotor suspended on magnetic bearings
(OP)
Hi,
Do you have any idea how to perform balancing of the rotor which is not suspended on conventional bearings, but on active magnetic bearngs (rotor is levitating in electromagnetic field).
Is it possible to perform balancing with the clasical weights (as in the case of conventional bearings), or some control algorithms have to be implemented. Would it be a good idea to perform clasical balancing while the rotor is on the retainer bearings (while there is no control) and afterwards apply control algorithms to levitate the rotor?
Thanks a lot.
Do you have any idea how to perform balancing of the rotor which is not suspended on conventional bearings, but on active magnetic bearngs (rotor is levitating in electromagnetic field).
Is it possible to perform balancing with the clasical weights (as in the case of conventional bearings), or some control algorithms have to be implemented. Would it be a good idea to perform clasical balancing while the rotor is on the retainer bearings (while there is no control) and afterwards apply control algorithms to levitate the rotor?
Thanks a lot.





RE: Balancing of rotor suspended on magnetic bearings
William Hammett
Synergetic Engineering Consultants
RE: Balancing of rotor suspended on magnetic bearings
In some AMB turbo-machinery, low speed balancing of the rotor is common just as you would for a oil bearing machine.
RE: Balancing of rotor suspended on magnetic bearings
Mike Halloran
Pembroke Pines, FL, USA
RE: Balancing of rotor suspended on magnetic bearings
If the low speed balancing is performed, the PID gains sholud be tuned first or the rotor should be on retainer bearings (not levitating)? What can be expected to happen after such balancing if, afterwards, the rotor passes the first critical speed? Will it be stable?
RE: Balancing of rotor suspended on magnetic bearings
RE: Balancing of rotor suspended on magnetic bearings
It seems like a supercritical rotor would be fairly difficult for AMB's to deal with.