本文利用动力学方程对磁悬浮现象中搅拌子的运动规律进行了理论分析，通过控制变量对影响稳定悬浮的参量进行了实验探究.

实验和理论结果一致表明：流体黏度越大，搅拌子悬浮高度越低;随着磁力搅拌器驱动转速增大，搅拌子摆动角速度ωw

加强，转动角速度ωs减弱，悬浮高度降低;较小的搅拌子更容易稳定在中心，直径小的烧杯容易提供初始的稳定态;当搅拌子初始距底高度zb 固定，驱动转速越大，或当驱动转速固定，搅拌子zb高度越高，对应的摆动振幅都越小.

with the change of the speed of magnetic stirrer. The motion of the flea in magnetic levitation

is analyzed theoretically by means of dy-

namical equation， and the parameters affecting the stable levitation are investigated

experimentally by means of var- iable controlling. The experimental and theoretical results

show that the higher the fluid viscosity coefficient， the lower the suspension height of

the flea. As the driving speed of magnetic stirrer increasing， the flea oscillation angu- lar

velocity ωw strengthened， rotation angular velocity ωs weakens， suspension height decreases;

Smaller flea tended to be more stable in the center， and smaller beakers tended to provide an

initial stable state. When the initial height zb from the bottom of the flea is fixed， the

higher the driving speed， or when the driving speed is fixed， the higher the initial height zb

from the bottom of the flea， the smaller the corresponding swing amplitude.