Rotor-bearing systems with long, fast running rotors and rotational symmetry disturbed in stiffness, damping and moments of inertia are investigated. Since a magnetic bearing is used as an actuator in a control circuit, vibrations of the system can be influenced in a desired way, A feedback control is designed with emphasis to the endangered modes of oscillation of the rotor system caused by parametrical excitation. A small number of sensors and a controller with constant gain factors are used in order to obtain a low-cost system. For illustration an elastically supported gas centrifuge with 12 degrees of freedom and asymmetrical stiffness and damping properties is considered.
Active Control of Vibrations in the Case of Asymmetrical High-Speed Rotors by Using Magnetic Bearings
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Anton, E., and Ulbrich, H. (October 1, 1985). "Active Control of Vibrations in the Case of Asymmetrical High-Speed Rotors by Using Magnetic Bearings." ASME. J. Vib., Acoust., Stress, and Reliab. October 1985; 107(4): 410–415. https://doi.org/10.1115/1.3269281
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