Title :
Vibration Suppression of a Flexible Shaft With a Simplified Bearingless Induction Motor Drive
Author :
Chiba, Akira ; Fukao, Tadashi ; Rahman, M. Azizur
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ. of Sci., Noda
Abstract :
In this paper, we present new strategies of vibration suppression in flexible shaft of a motor with active and passive magnetic forces. Shaft magnetic damping originates from the principle of a bearingless motor having a radial magnetic force generation. Radial force is used for shaft vibration suppression to go through the first critical speed. Simplifications are described in a suppression force system. We propose the elimination of a power source with self-excitation, as well as the elimination of sensors, controllers, and inverters, although the effectiveness is limited.
Keywords :
flexible structures; induction motor drives; magnetic forces; shafts; vibrations; bearingless induction motor drive; flexible shaft; magnetic forces; vibration suppression; Damping; Force sensors; Induction motor drives; Induction motors; Magnetic forces; Magnetic levitation; Magnetic materials; Rotors; Shafts; Vibrations; Bearingless motor; flexible shaft; induction motor; vibration suppression;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2008.921401