電(dian)火花加工穿孔機一般是作為電火(huo)花的配套設備(bei)，同樣是利用高(gao)頻放電對工件腐蝕(shi)加工，高(gao)頻對智能糾錯控制器(qi)產生(sheng)干擾(rao)。而干擾(rao)一(yi)般是指那些與信號(hao)無關的，在信號(hao)輸(shu)入、傳輸(shu)和輸(shu)出(chu)過程(cheng)中出(chu)現的一(yi)些不確定的有(you)害的電氣瞬變(bian)現象。
干擾(rao)源(yuan)一(yi)般是(shi)電(dian)(dian)(dian)源(yuan)干擾(rao)由于電(dian)(dian)(dian)網(wang)覆蓋范圍廣，存(cun)在(zai)多種設備(bei)共享(xiang)一(yi)個(ge)電(dian)(dian)(dian)網(wang)，尤其是(shi)電(dian)(dian)(dian)網(wang)內部的(de)變(bian)化，電(dian)(dian)(dian)源(yuan)開(kai)關操(cao)作(zuo)、雷(lei)擊浪涌、大型電(dian)(dian)(dian)力(li)設備(bei)起(qi)停、交直(zhi)流(liu)傳動裝置引起(qi)的(de)諧波、電(dian)(dian)(dian)網(wang)短路暫態沖擊等，都通過(guo)輸電(dian)(dian)(dian)線(xian)路傳到電(dian)(dian)(dian)源(yuan)原邊(bian)，使電(dian)(dian)(dian)壓暫變(bian)，導(dao)致電(dian)(dian)(dian)網(wang)電(dian)(dian)(dian)壓波動。此(ci)外，電(dian)(dian)(dian)源(yuan)線(xian)在(zai)傳輸過(guo)程(cheng)也(ye)會(hui)產生噪聲以及快速瞬變(bian)的(de)脈沖串(chuan)，污染(ran)電(dian)(dian)(dian)網(wang)。也(ye)可能是(shi)輻射干擾(rao)電(dian)(dian)(dian)磁或電(dian)(dian)(dian)場在(zai)自然(ran)界中(zhong)(zhong)無處不在(zai)。工作(zuo)中(zhong)(zhong)的(de)電(dian)(dian)(dian)火花穿孔機除了(le)受(shou)到電(dian)(dian)(dian)場的(de)作(zuo)用(yong)外還受(shou)到了(le)磁場的(de)作(zuo)用(yong)。電(dian)(dian)(dian)火花穿孔機在(zai)運行過(guo)程(cheng)中(zhong)(zhong)，由于工作(zuo)環境的(de)惡(e)劣性，不可避免的(de)會(hui)受(shou)到電(dian)(dian)(dian)磁干擾(rao)。
數字(zi)信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)和模擬信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)間的(de)(de)(de)(de)干(gan)(gan)(gan)擾(rao)(rao)電(dian)火花(hua)數控穿孔(kong)機在(zai)工作(zuo)過程中，由(you)(you)于(yu)整套設備涉及到(dao)(dao)的(de)(de)(de)(de)器件較多(duo)，既有(you)AC380V、AC220V交流(liu)電(dian)信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)，又有(you)DV24V、DC5V的(de)(de)(de)(de)各種(zhong)低(di)壓直(zhi)流(liu)電(dian)信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)。用來(lai)傳(chuan)(chuan)遞信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)(de)(de)(de)電(dian)纜，在(zai)走線(xian)過程中，有(you)時會由(you)(you)于(yu)模擬信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)輸出設備或由(you)(you)伺服驅動器或變(bian)頻器產生的(de)(de)(de)(de)干(gan)(gan)(gan)擾(rao)(rao)引起誤動作(zuo)發生，影(ying)響設備的(de)(de)(de)(de)正(zheng)常工作(zuo);用來(lai)傳(chuan)(chuan)遞I/O輸入/輸出信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)(de)(de)(de)頻率受到(dao)(dao)時鐘頻率和諧波干(gan)(gan)(gan)擾(rao)(rao)，加(jia)上線(xian)路走線(xian)不當，使數字(zi)信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)線(xian)和模擬信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)線(xian)不可避(bi)免的(de)(de)(de)(de)會受到(dao)(dao)外(wai)來(lai)干(gan)(gan)(gan)擾(rao)(rao)信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)的(de)(de)(de)(de)干(gan)(gan)(gan)擾(rao)(rao)，各種(zhong)信(xin)(xin)(xin)(xin)(xin)(xin)(xin)號(hao)(hao)線(xian)相互之間也會通過線(xian)間耦合等產生干(gan)(gan)(gan)擾(rao)(rao)。
由于(yu)各(ge)種干擾源的干擾會(hui)產(chan)生一些瞬變現象(xiang)，會(hui)使數控系統中的數據在傳輸過程中發(fa)生變化，增(zeng)大誤差，使局部裝(zhuang)置(zhi)或整個系統出(chu)現異(yi)常(chang)情況(kuang)，引起故障(zhang)。
