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lddl123
大霧見(jiàn)小霧
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樓主  發(fā)表于: 2014-11-27 10:30
用普通接近開(kāi)關(guān)測速，接近開(kāi)關(guān)響應頻率是400HZ，電機用變頻控制，最高50HZ，響應速度夠不夠呢
gufan8099663
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1樓  發(fā)表于: 2014-11-27 12:58
要看電機旋轉一圈接近開(kāi)關(guān)所采集的脈沖數n以及電機在50HZ時(shí)的轉速v（r/min）。最后v*n/60的值只要低于接近開(kāi)關(guān)的響應頻率就OK了

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