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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