Dynamic Stability of a Passive Magnetic Suspension with an Eight-pole Stator

概要

論文の詳細を見る
A passive magnetic radial bearing with an eight-pole stator is statically stable. But its inherent damping characteristics are not sufficient to prevent dynamic instability. The dynamic stability of the magnetic bearing is commonly attained by introducing the friction of a mechanical viscous fluid. Though the static performance in this type of magnitic bearing has been theoretically analyzed by some investigators. its dynamic stability has not been fully determined. This study presents an analysis of the dynamic characteristics of a passive magnetic radial bearing with an eight-pole stator. In the analysis the perturbation method has been used to obtain a transfer function for the magnetic bearing system. Thus the dynamically as well as statically stable region has been calculated. The analytical results are confirmed by experimental observation.
一般社団法人日本機械学会の論文