描述
現(xiàn)在有好多工業(yè)設(shè)備硬件維修人員,好多是從培訓(xùn)學(xué)校出來從業(yè)的。培訓(xùn)學(xué)校教學(xué)內(nèi)容,大抵是根據(jù)國產(chǎn)變頻器作為教材培訓(xùn)的,關(guān)于伺服(運(yùn)動(dòng)控制)設(shè)備的講解也不多,直流調(diào)速器的內(nèi)容更是少之又少。不得不說培訓(xùn)機(jī)構(gòu)促進(jìn)了工業(yè)設(shè)備維修行業(yè)的普及,出來的學(xué)弟學(xué)妹們也不泛優(yōu)秀的從業(yè)同行。但這個(gè)行業(yè)有一個(gè)短板,維修的理論儲(chǔ)備和實(shí)操經(jīng)驗(yàn)一樣很重要,而更多的進(jìn)口品牌和大品牌,人家的設(shè)計(jì)方案,和產(chǎn)品定位遠(yuǎn)不止于風(fēng)機(jī)水泵變頻器應(yīng)用那么簡單,綜合且多樣化,維修起來就有點(diǎn)壓力了。
變頻器和直流調(diào)速器,其實(shí)直流調(diào)速器的發(fā)展更早,但發(fā)展速度方面,應(yīng)用之廣,變頻器已經(jīng)遙遙領(lǐng)先于直流調(diào)速器,這就是為什么國家發(fā)展工業(yè)都二三十年了,國內(nèi)竟然沒有一家出色的直流調(diào)速器生產(chǎn)商。根據(jù)從業(yè)經(jīng)驗(yàn)來看,高精度,大功率的直流調(diào)速器,清一色的進(jìn)口貨,在直流調(diào)速器技術(shù)方面,可以說連日本都不如歐美企業(yè),但日本在運(yùn)動(dòng)控制領(lǐng)域卻十分厲害。市場上常見的調(diào)速器品牌如:德國西門子;瑞典abb;英國歐陸(Parker)590;美國ct艾默生;美國a.b羅克韋爾;意大利安薩爾多等等。當(dāng)然還有一些冷門牌子,唯一沒有一家國產(chǎn)品牌,包括臺(tái)灣。
微信里有同行問,直流調(diào)速器輸出到底接幾根線?可見在工業(yè)設(shè)備維修的普及有多遠(yuǎn)。直流調(diào)速器原理都是控制馬達(dá)做功,顧名思義,直流調(diào)速器能控制的,當(dāng)然就是直流馬達(dá)了。大功率直流馬達(dá)制造復(fù)雜,價(jià)格昂貴,數(shù)字直流調(diào)速器的特點(diǎn)是體積小,輸出功率大,技術(shù)難點(diǎn)是控制電路復(fù)雜且要求極高的響應(yīng)速度。舉個(gè)例子:660v交流變頻器要做到1500kw以上的功率,硬件成本不說,光機(jī)箱大小就得好幾個(gè)十個(gè)立方了吧,直流調(diào)速器輸出同樣功率的塊頭,兩個(gè)立方米足夠了。直流調(diào)速器在鋼鐵、橡塑、能源、化工等大功率,低速高扭應(yīng)用的場合,一直有著和變頻同樣重要的地位。
很多說伙伴說,直流調(diào)速器就是低速高扭,應(yīng)用場合范圍較窄,這個(gè)觀點(diǎn)就值得商榷啦,我就見個(gè)糖果廠整條生產(chǎn)設(shè)備用的歐陸590做驅(qū)動(dòng)控制的,而且是十幾年前的產(chǎn)品,控制板還是模擬的那種。也有木夾板生產(chǎn)廠家用ct直流調(diào)速器作為圓木取層。這樣的工作要求相當(dāng)?shù)母?,圓木木材越轉(zhuǎn)越小,刨出的層板不僅要求光滑,厚薄均勻,無斷裂,力矩變化范圍也很大,一般變頻器也很難勝任的。
產(chǎn)品承諾:
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢(shì)價(jià)格,大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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