140DDI85300C Quantum

步進電機減速機錯位即是失步，失步分為丟步和越步。步進電動機正常工作時，每接收一個控制脈沖就移動一個步距角，即前進一步。若連續地輸入控制脈沖，電動機就相應地連續轉動。丟步時，轉子前進的步數小于脈沖數;越步時，轉子前進的步數多于脈沖數。一次丟步和越步的步距數等于運行拍數的整數倍。丟步嚴重時，將使轉子停留在一個位置上或圍繞一個位置振動，越步嚴重時，拖動結構將發生過沖。

關于步進電機減速機丟步和失步的分析：

步進電機減速機選型不當，電機力矩不夠或者物體運動的慣量超過電機自鎖力，造成的丟步或失步。

驅動器選型不當，配套的驅動器電流偏小，影響電機正常運轉，現在市面上很多電流虛標的驅動器，拿峰值電流當額定電流來忽悠消費者，驅動器選型額定電流應大于步進電機減速機額定電流的1.2-1.5倍。

配套電源選型不當，配套電源應是驅動器額定電源的1.5-2倍，電源虛標比驅動器虛標更嚴重。

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