吊(diao)桿(gan)(gan)是一種懸吊(diao)裝置(zhi)，裝在舞(wu)臺(tai)上空(kong)，用(yong)(yong)它(ta)提升景片、掛(gua)設(she)幕布(bu)、懸吊(diao)燈具等舞(wu)臺(tai)用(yong)(yong)具。其數量眾多，使用(yong)(yong)頻繁，是舞(wu)臺(tai)上必備的(de)(de)(de)設(she)備。  傳(chuan)統(tong)(tong)(tong)的(de)(de)(de)舞(wu)臺(tai)吊(diao)桿(gan)(gan)控(kong)(kong)(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)多采(cai)用(yong)(yong)繼電(dian)器(qi)(qi)、接觸器(qi)(qi)控(kong)(kong)(kong)制方(fang)式(shi)。由于劇(ju)場  中的(de)(de)(de)吊(diao)桿(gan)(gan)數量很多，所需要(yao)的(de)(de)(de)繼電(dian)器(qi)(qi)、接觸器(qi)(qi)數目(mu)龐大，接線(xian)復雜，造成控(kong)(kong)(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)可(ke)(ke)靠性(xing)很差。可(ke)(ke)編程控(kong)(kong)(kong)制器(qi)(qi)是傳(chuan)統(tong)(tong)(tong)的(de)(de)(de)繼電(dian)器(qi)(qi)接觸器(qi)(qi)控(kong)(kong)(kong)制方(fang)式(shi)與(yu)計算(suan)機(ji)技(ji)術的(de)(de)(de)完美結合(he)，具有(you)可(ke)(ke)靠性(xing)高(gao)，編程直觀(guan)容易(yi)的(de)(de)(de)特點，己在工業控(kong)(kong)(kong)制中獲得廣泛(fan)應(ying)用(yong)(yong)。另外，目(mu)前的(de)(de)(de)PLC都具備通訊接口，可(ke)(ke)以(yi)與(yu)其它(ta)PLC或(huo)計算(suan)機(ji)組成網絡(luo)控(kong)(kong)(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)。這些特點決定了PLC是舞(wu)臺(tai)吊(diao)桿(gan)(gan)控(kong)(kong)(kong)制器(qi)(qi)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)******對(dui)象(xiang)。為了便(bian)于系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)監控(kong)(kong)(kong)和管(guan)理，控(kong)(kong)(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)應(ying)具有(you)良(liang)好人機(ji)對(dui)話窗口，即需要(yao)上位機(ji)對(dui)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)進行監控(kong)(kong)(kong)和管(guan)理。  近年來，由于組態技(ji)術的(de)(de)(de)發展(zhan)，基于通用(yong)(yong)組態軟件(jian)，以(yi)IPC為上位監 控(kong)(kong)(kong)機(ji)，以(yi)PLC為數據采(cai)集和控(kong)(kong)(kong)制機(ji)而(er)構成的(de)(de)(de)集散式(shi)(分布(bu)式(shi))控(kong)(kong)(kong)制系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)是主流方(fang)向。舞(wu)臺(tai)吊(diao)桿(gan)(gan)的(de)(de)(de)控(kong)(kong)(kong)制也理當順應(ying)了這一發展(zhan)趨勢(shi)。

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