1756-PA75
1756-PA75
影響PLC控制系統(tǒng)的干擾源與一般影響工業(yè)控制設(shè)備的干擾源一樣,,大都產(chǎn)生在電流或電壓劇烈變化的部位,這些電荷劇烈移動的部位就是噪聲源,,即干擾源,。
干擾類型通常按干擾產(chǎn)生的原因、噪聲干擾模式和噪聲的波形性質(zhì)的不同劃分,。其中:按噪聲產(chǎn)生的原因不同,,分為放電噪聲、浪涌噪聲、高頻振蕩噪聲等,;按噪聲的波形,、性質(zhì)不同,分為持續(xù)噪聲,、偶發(fā)噪聲等,;按噪聲干擾模式不同,分為共模干擾和差模干擾,。共模干擾和差模干擾是一種比較常用的分類方法,。
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Allen-Bradley 廈門泰尼電氣有限公司
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