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發(fā)布信息當(dāng)前位置: 首頁 » 供應(yīng) » 電工電氣 » 工控系統(tǒng)及裝備 » PLC » MMS3910/311-01模塊

MMS3910/311-01模塊

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單 價(jià): 2.00元/件 
起 訂: 1 件 
供貨總量: 20 件
發(fā)貨期限: 自買家付款之日起 3 天內(nèi)發(fā)貨
所在地: 福建 廈門市
有效期至: 長期有效
更新日期: 2015-03-26 10:35
瀏覽次數(shù): 17
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【MMS3910/311-01模塊】詳細(xì)說明
?MMS3910/311-01模塊

充磁機(jī)根據(jù)電容儲(chǔ)能脈沖放電產(chǎn)生強(qiáng)大磁場,對鐵磁性物質(zhì)進(jìn)行磁化[1]。在電磁交換前,電容儲(chǔ)存的能量

  式中uc為儲(chǔ)存電容的端電壓,c為儲(chǔ)存電容的容量。改變電容的電壓或容量,可調(diào)節(jié)電容存儲(chǔ)電場能量大小。目前,電容在2kv~3.5kvdc,存儲(chǔ)能量可達(dá)100kj以上。

  電容c被充電至設(shè)定電壓u0時(shí)斷開充電電源,隨即接通lr串聯(lián)電路,則電容c所儲(chǔ)電荷通過lr迅速地以脈沖形式放電,得到極大的脈沖電流峰值。電容放電的端電壓uc滿足

  式中l(wèi)為充磁頭中螺線管的電感量,r為螺線管、放電回路連接導(dǎo)線電阻、接觸電阻及放電器件內(nèi)阻的總和(忽略線路分布電容與分布電感)。

  對脈沖充磁,充磁頭常選用

  即欠阻尼情況下,電容放電電流,使脈沖磁場峰值達(dá)到磁化線圈內(nèi)被充磁材料內(nèi)矯頑力的3~5倍時(shí)進(jìn)行可飽和磁化。

  磁通強(qiáng)度檢測有磁電式磁通、電子式磁通和數(shù)字積分式磁通三種[2]。圖1為電子式磁通電路,有探測線圈和積分電路組成。當(dāng)探測線圈中所鏈合的磁通變化δφ時(shí),線圈中感應(yīng)出電動(dòng)勢,經(jīng)積分后的輸出電壓

  式中n為探測線圈的匝數(shù),r為電阻,c為積分電容。

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