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whlly
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樓主  發(fā)表于: 2008-08-18 15:49
最近在搞電機的速度控制問(wèn)題，有人提出用包絡(luò )線(xiàn)來(lái)控制�？墒菍Πj(luò )線(xiàn)一點(diǎn)都不懂，想請高手講下。
cvlsam
富士低壓，POD（觸摸屏），PLC專(zhuān)賣(mài)
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1樓  發(fā)表于: 2008-08-18 16:13
您不看S7-200系統手冊？

系統手冊第9章，西門(mén)子總喜歡使用包絡(luò )這樣令人很難理解的詞匯來(lái)描述。

以上！
whlly
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2樓  發(fā)表于: 2008-08-18 17:24
謝謝你。

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