磁刚度是表示运动粒子动量的量度。
磁刚度与电磁悬浮的稳定性分析_电子资料文库 关键词:电磁悬浮;磁刚度;稳定性 [gap=4217]Key words:EML ; magnetic stiffness ; stability
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镁合金是比重最轻的结构材料，具有高的比强度、比刚度和良好的磁屏蔽性、阻尼性、切削加工性等优点。
As the lightest constructional material, magnesium alloy has high specific strength, high specific stiffness, good magnetic-shielding ability, good damping ability, and good machinability.
用这种阻尼器支承的磁悬浮轴承转子系统，通过控制磁流变阻尼器线圈中的电流来改变整个转子系统的支承刚度和阻尼，抑制转子高速时的振动。
Current change in the MR damper coil can change the stiffness and damping of the whole support system, so the vibration of high-speed rotor can be suppressed by the MR damper.
但同其它常规流体阻尼器类似，在高频振动时会出现刚度硬化现象，使高频传递率增大，常规磁流变阻尼器多应用于较低频域的振动控制。
But common MR damper cant be used in cases of high-frequency vibrations because of stiffness hardening, which leads to increase of displacement transmissibility at high frequencies.
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