MPL-B880D-SJ72AA

當(dāng)輸入脈沖頻率與電機(jī)的固有頻率匹配時，電機(jī)會出現(xiàn)更劇烈的振動。這稱為共振，通常發(fā)生在 200Hz 左右。在共振中，過沖和下沖變得更大，漏步的機(jī)會也更高。共振隨負(fù)載慣性而變化，但通常在200Hz左右。

兩相步進(jìn)電機(jī)只能以四組為一組進(jìn)行失步。如果您了四的倍數(shù)的步數(shù)，則振動會導(dǎo)致失去同步性，或者負(fù)載太大。如果的步驟不是四的倍數(shù)，則很可能是錯誤的脈沖數(shù)或電噪聲導(dǎo)致了問題。

有多種方法可以避免共振。簡單的方法是完全避免這種速度。對于 60 rpm 的兩相電機(jī)，200 Hz 并不是非常快。大多數(shù)電機(jī)的大啟動速度約為 1000 pps 左右。所以在大多數(shù)情況下，您可以以高于諧振速度的速度啟動電機(jī)。如果您以低于共振速度的速度啟動，請快速加速通過共振范圍。

另一種解決方案是使步距角更小。對于更大的步距角，電機(jī)總是會過沖和下沖更多。如果電機(jī)不需要走很遠(yuǎn)，它就不會產(chǎn)生足夠的力（扭矩）來過沖。只要步距角變小，電機(jī)就不會振動那么大。這就是半步和微步系統(tǒng)在減少振動方面如此有效的原因。

確保電機(jī)的尺寸適合負(fù)載。通過選擇合適的電機(jī)，您可以提。

阻尼器也可用。阻尼器安裝在電機(jī)的后軸上并吸收一些振動能量。他們通常會廉價地平滑振動電機(jī)。

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