Vibration Control of a Nonlinear Rotor System through Electro-Magnetic Bearings
2012 ◽
Vol 452-453
◽
pp. 1408-1414
Keyword(s):
In rotating machinery, vibration resonance with large amplitude and complex pattern occurs at critical speeds due to rotor imbalance and nonlinear effects. In this paper, a vibration control method is proposed for a rotor system supported by a ball bearing and an electro-magnetic bearing. In particular, a disturbance observer combined with the current delay estimation is implemented to improve the controller's ability of compensating for system's nonlinear effects and uncertainty. As a result, the rotor vibration is suppressed to very small amplitudes in the entire operating speed range. The proposed method is validated through numerical simulations and experiments.
Keyword(s):
Keyword(s):
1999 ◽
Vol 122
(1)
◽
pp. 7-11
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Keyword(s):
2012 ◽
Vol 215-216
◽
pp. 741-745
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Keyword(s):
2012 ◽
Vol 452-453
◽
pp. 1408-1414
Keyword(s):
2016 ◽
Vol 23
(2)
◽
pp. 167-180
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