密比 meaning in Chinese

over-consolidated ratio

With the development of modern permanent magnet ( pm ) machine to high speed , high efficiency , high power density and micromation , the limitation of traditional rare earth pm machine is exhibited , such as higher ripple - free torque , higher losses , lower open - circuit magnetic field , etc . halbach motor , a new type permanent magnet motor , first proposed by american scholar klause halbach , has been studied very widely . halbach motor has higher magnetic field , usually as 1 . 4 times as that of traditional rare earth permanent magnet machine , which attributes to higher power density
Halbach永磁电机是由美国学者klausehalbach提出后一直被广泛研究的一种新型永磁电机，和普通永磁电机相比其优越性有：气隙磁密比一般永磁电机可增大40 ，从而可有效提高电机的功率密度；固有的正弦分布磁场，可为电机设计和加工带来便利，降低成本；自屏蔽效应，转子可不再需要为磁路提供闭合回路，这为转子的选材提供了较大的空间。