Among the harmonics analyzed by this method, it is known that harmonics of electromagnetic excitation force having a low-order spatial order are likely to lead to motor vibration. This is because the apparent motor rigidity decreases as the spatial order of the electromagnetic excitation force decreases, and as a result, the amount of deformation of the motor due to the electromagnetic excitation force increases.
在透過此方法分析的諧波中，已知具有低次空間階次的電磁激振力的諧波很可能導致馬達振動。這是因為，隨著電磁激振力的空間順序降低，馬達的表觀剛性降低，結果，由電磁激振力引起的馬達的變形量增加。LINK
in a brushless motor with concentrated winding, it is known that the lowest order of the spatial harmonics included in the electromagnetic excitation force matches the absolute value of the difference between the number of poles and the number of slots.
在集中繞組的無刷馬達中，已知電磁激振力中所包含的空間諧波的最低次與極數和槽數之差的絕對值相符。
It is shown that the natural frequencies for mode one and two are about 4350Hz and 4700Hz respectively, which are one order of magnitude higher than the frequencies of the dominant radial electromagnetic force density harmonics.
結果表明，模態一和模態二的固有頻率分別約為 4350Hz 和 4700Hz，比主要徑向電磁力密度諧波的頻率高一個數量級。
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林民莒