ISI222?停止線圈1的電流，使電流從線圈2的下側(cè)流入，從線圈2的上側(cè)流出。

?上線圈2的內(nèi)側(cè)變?yōu)镾，下線圈2的內(nèi)側(cè)變?yōu)镹。

?永磁體被其磁場吸引，順時針再旋轉(zhuǎn)90°停止。

通過電子電路按照上述①至④的順序切換流過線圈的電流，即可使步進電機旋轉(zhuǎn)。在該示例中，每一次開關(guān)動作會使步進電機旋轉(zhuǎn)90°。另外，當(dāng)使電流不斷流過某一線圈時，可以保持停止狀態(tài)并使步進電機具有保持轉(zhuǎn)矩。順便提一下，如果將流過線圈的電流順序反過來，則可以使步進電機反向旋轉(zhuǎn)。

關(guān)鍵要點：

?在兩相雙極步進電機中，按順序逐相進行線圈勵磁會使步進電機旋轉(zhuǎn)。

?按相反的順序勵磁可以使步進電機反向旋轉(zhuǎn)。

ISI222  

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