磁気浮上物体に生じる係数励振の安定化

抄録

This paper is devoted to the study of a stabilization for the parametric resonance of a magnetically levirated body subjected to periodically varying magnetic force. A pendulum, which is actuated under a proposed bifurcation control, is attached to the body. The dynamics of this control system is analyzed using the method of multiple scales, and the bifurcation set is derived from the amplitude equation. By the bifurcation control, the bifurcation set, i.e., the unstable region, is shifted and the parametric resonance is stabilized. Furthermore, it is experimentally verified that the parametric resonance is stabilized under the above control scheme. It is also clarified that this stabilization is effective on the passage through parametric resonance.