英语翻译If the bearing system is very stiff,all of these critica
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英语翻译
If the bearing system is very stiff,all of these criticals will occur above the operating frequency of the rotor.
This however leads to high losses.Thus,a bearing system is chosen which is soft enough to ensure that the rigid body criticals are passed at low speed.Once the criticals have been passed on run-up,the rotor will spin about its centre of mass with low damping losses and low forces on the bearing system.This is only possible with a highly balanced rotor which has a low mass centre shift.
If the bearing system is very stiff,all of these criticals will occur above the operating frequency of the rotor.
This however leads to high losses.Thus,a bearing system is chosen which is soft enough to ensure that the rigid body criticals are passed at low speed.Once the criticals have been passed on run-up,the rotor will spin about its centre of mass with low damping losses and low forces on the bearing system.This is only possible with a highly balanced rotor which has a low mass centre shift.
如果轴承系统不够灵活,那么上述所有的临界值就会比电机的工作频率还要高
而这就会导致(整个系统?)产生损耗.因此,轴承系统应该具有一定"弹性"以保证电机在低速时就能跨越刚体临界值.一旦引擎在加速过程中超越了这些临界值,它就能在轴承系统上以低阻尼低应力的状态绕质心旋转.这种(轴承设计)只适用于质心位置变化不大的高平衡性电机.
而这就会导致(整个系统?)产生损耗.因此,轴承系统应该具有一定"弹性"以保证电机在低速时就能跨越刚体临界值.一旦引擎在加速过程中超越了这些临界值,它就能在轴承系统上以低阻尼低应力的状态绕质心旋转.这种(轴承设计)只适用于质心位置变化不大的高平衡性电机.
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