由于(yu)無殘留應力和高加(jia)(jia)工(gong)(gong)(gong)(gong)效率的(de)(de)(de)優(you)勢，電火(huo)花線切割機(ji)床廣(guang)泛(fan)應用于(yu)模具工(gong)(gong)(gong)(gong)業和航空航天領域。中線切割加(jia)(jia)工(gong)(gong)(gong)(gong)后的(de)(de)(de)工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)包括階(jie)梯孔，楔形工(gong)(gong)(gong)(gong)作臺，圓形，橢圓形和其他不同的(de)(de)(de)結構形狀。在(zai)加(jia)(jia)工(gong)(gong)(gong)(gong)過程中，工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)的(de)(de)(de)厚(hou)度(du)(du)將隨著(zhu)加(jia)(jia)工(gong)(gong)(gong)(gong)而(er)連續變化(hua)(hua)或(huo)突變。實際上，隨著(zhu)工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)厚(hou)度(du)(du)的(de)(de)(de)減小，伺服加(jia)(jia)工(gong)(gong)(gong)(gong)速(su)度(du)(du)將逐漸(jian)增(zeng)加(jia)(jia)而(er)不改變加(jia)(jia)工(gong)(gong)(gong)(gong)參數，導致相(xiang)反，隨著(zhu)工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)厚(hou)度(du)(du)的(de)(de)(de)增(zeng)加(jia)(jia)，伺服加(jia)(jia)工(gong)(gong)(gong)(gong)速(su)度(du)(du)將逐漸(jian)降(jiang)低，導致加(jia)(jia)工(gong)(gong)(gong)(gong)效率降(jiang)低。因此，在(zai)處理(li)時當工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)厚(hou)度(du)(du)在(zai)加(jia)(jia)工(gong)(gong)(gong)(gong)過程中發生變化(hua)(hua)時，如(ru)何使(shi)機(ji)床的(de)(de)(de)伺服進給速(su)度(du)(du)與工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)的(de)(de)(de)厚(hou)度(du)(du)保持在(zai)理(li)想(xiang)范圍內，是(shi)確保中間螺(luo)紋這是(shi)切削(xue)精度(du)(du)和效率的(de)(de)(de)重要前(qian)提，在(zai)線識別工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)厚(hou)度(du)(du)是(shi)一個難題(ti)。

近年來(lai)，各國學者對電(dian)(dian)(dian)火(huo)花(hua)加(jia)(jia)工中工件(jian)厚度(du)的(de)識別進行了(le)大(da)量研(yan)究。例(li)如，等效容量脈沖電(dian)(dian)(dian)源使用的(de)是腐蝕材料的(de)體積，根據(ju)放電(dian)(dian)(dian)能量比的(de)特定放電(dian)(dian)(dian)能量的(de)概念(nian)，建立工件(jian)厚度(du)，加(jia)(jia)工速度(du)和放電(dian)(dian)(dian)頻率之間的(de)數據(ju)模型，以(yi)預測工件(jian)厚度(du)在線(xian)切割加(jia)(jia)工中變化(hua)不大(da)。

選(xuan)擇放(fang)(fang)電(dian)頻率，進(jin)(jin)給(gei)速(su)(su)度(du)(du)(du)，伺服電(dian)壓(ya)和脈(mo)沖(chong)間隔(ge)作為輸入，建(jian)立了用于工件(jian)厚(hou)度(du)(du)(du)識別(bie)的支持向量回歸(gui)模(mo)型準確預測工件(jian)厚(hou)度(du)(du)(du)。目(mu)前，對WEDM厚(hou)度(du)(du)(du)識別(bie)技術(shu)的研究主要(yao)存在(zai)(zai)(zai)于單向WEDM（慢速(su)(su)WEDM）中(zhong)(zhong)，并且在(zai)(zai)(zai)WEDM中(zhong)(zhong)使用等能量脈(mo)沖(chong)電(dian)源時(shi)，工件(jian)的厚(hou)度(du)(du)(du)識別(bie)主要(yao)基于放(fang)(fang)電(dian)頻率，脈(mo)沖(chong)間隔(ge)，進(jin)(jin)給(gei)速(su)(su)度(du)(du)(du)等影響因(yin)素。測量模(mo)型以實(shi)(shi)現工件(jian)厚(hou)度(du)(du)(du)的預測。但是(shi)這些模(mo)型都是(shi)在(zai)(zai)(zai)在(zai)(zai)(zai)線切割縫的寬(kuan)度(du)(du)(du)恒定的條(tiao)件(jian)下(xia)建(jian)立的，而在(zai)(zai)(zai)實(shi)(shi)際綁扎過程中(zhong)(zhong)，不(bu)同(tong)加工參數產生(sheng)的WEDM接縫寬(kuan)度(du)(du)(du)是(shi)可變的。同(tong)時(shi)，脈(mo)沖(chong)電(dian)源的類型不(bu)僅等于能量脈(mo)沖(chong)電(dian)源，從而導致電(dian)流后識別(bie)技術(shu)的局限性。