AS2-107H編碼器AS2-115愛(ài)德利 |
聯(lián)系人:梁經(jīng)理 (先生) | 手機(jī):13726747041 |
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郵箱:709511953@qq.com | 地址:廣州市增城區(qū)新塘鎮(zhèn)群星北路31號(hào)4棟首層110房 |
AS2-107H AS2-115
主要產(chǎn)品:愛(ài)得利,奧托尼克斯Autonics /倍加福P+F編碼器,多摩川TAMAGAWA,光洋koyo,萊茵LINE,內(nèi)密控NEMICON,歐姆龍OMRON,森泰克SUMTAK。日本東方馬達(dá),韓國(guó)DKM減速電機(jī),泰映TROY減速電機(jī),韓國(guó)SPG小功率 直流電機(jī)的基本工作原理 直流電機(jī)的基本工作原理 直流勵(lì)磁的磁路在電工設(shè)備中的應(yīng)用,除了直流電磁鐵(直流繼電器、直流接觸器等)外,最重要的就是應(yīng)用在直流旋轉(zhuǎn)電機(jī)中。在發(fā)電廠里,同步發(fā)電機(jī)的勵(lì)磁機(jī)、蓄電池的充電機(jī)等,都是直流發(fā)電機(jī);鍋爐給粉機(jī)的原動(dòng)機(jī)是直流電動(dòng)機(jī)。此外,在許多工業(yè)部門,例如大型軋鋼設(shè)備、大型精密機(jī)床、礦井卷?yè)P(yáng)機(jī)、市內(nèi)電車、電纜設(shè)備要求嚴(yán)格線速度一致的地方等,通常都采用直流電動(dòng)機(jī)作為原動(dòng)機(jī)來(lái)拖動(dòng)工作機(jī)械的。直流發(fā)電機(jī)通常是作為直流電源,向負(fù)載輸出電能;直流電動(dòng)機(jī)則是作為原動(dòng)機(jī)帶動(dòng)各種生產(chǎn)機(jī)械工作,向負(fù)載輸出機(jī)械能。在控制系統(tǒng)中,直流電機(jī)還有其它的用途,例如測(cè)速電機(jī)、伺服電機(jī)等。雖然直流發(fā)電機(jī)和直流電動(dòng)機(jī)的用途各不同,但是它們的結(jié)構(gòu)基本上一樣,都是利用電和磁的相互作用來(lái)實(shí)現(xiàn)機(jī)械能與電能的相互轉(zhuǎn)換。 直流電機(jī)的最大弱點(diǎn)就是有電流的換向問(wèn)題,消耗有色金屬較多,成本高,運(yùn)行中的維護(hù)檢修也比較麻煩。因此,電機(jī)制造業(yè)中正在努力改善交流電動(dòng)機(jī)的調(diào)速性能,并且大量代替直流電動(dòng)機(jī)。不過(guò),近年來(lái)在利用可控硅整流裝置代替直流發(fā)電機(jī)方面,已經(jīng)取得了很大進(jìn)展。包括直流電機(jī)在內(nèi)的一切旋轉(zhuǎn)電機(jī),實(shí)際上都是依據(jù)我們所知道的兩條基本原則制造的。一條是:導(dǎo)線切割磁通產(chǎn)生感應(yīng)電動(dòng)勢(shì);另一條是:載流導(dǎo)體在磁場(chǎng)中受到電磁力的作用。因此,從結(jié)構(gòu)上來(lái)看,任何電機(jī)都包括磁場(chǎng)部分和電路部分。從上述原理可見(jiàn),任何電機(jī)都體現(xiàn)著電和磁的相互作用,是電、磁這兩個(gè)矛盾著的對(duì)立面的統(tǒng)一。我們?cè)谶@一章里討論直流電機(jī)的結(jié)構(gòu)和工作原理,就是討論直流電機(jī)中的“磁”和“電”如何相互作用,相互制約,以及體現(xiàn)兩者之間相互關(guān)系的物理量和現(xiàn)象(電樞電動(dòng)勢(shì)、電磁轉(zhuǎn)矩、電磁功率、電樞反應(yīng)等)。 一、直流發(fā)電機(jī)的基本工作原理 直流發(fā)電機(jī)和直流電動(dòng)機(jī)具有相同的結(jié)構(gòu),只是直流發(fā)電機(jī)是由原動(dòng)機(jī)(一般是交流電動(dòng)機(jī))拖動(dòng)旋轉(zhuǎn)而發(fā)電?梢(jiàn),它是把機(jī)械能變?yōu)殡娔艿脑O(shè)備。直流電動(dòng)機(jī)則接在直流電源上,拖動(dòng)各種工作機(jī)械(機(jī)床、泵、電車、電纜設(shè)備等)工作,它是把電能變?yōu)闄C(jī)械能的設(shè)備。但是,當(dāng)前已經(jīng)有可控硅整流裝置替代了直流發(fā)電機(jī),為了能使大家更好的理解直流電動(dòng)機(jī),有必要同時(shí)講述一下直流發(fā)電機(jī)的原理。 TEXAS INSTRUMENTS SEMI SN7474N USPP SN7474N TEXAS INSTRUMENTS SEMI SN7476N USPP SN7476N TEXAS INSTRUMENTS SEMI SW-7454-N NSPP SW7454N TEXAS INSTRUMENTS SEMI 74F32PCOR FNFP 74F32PCOR TEXAS INSTRUMENTS SEMI SN7442AN NSFP SN7442AN TEXAS INSTRUMENTS SEMI SN7442AN NSPP SN7442AN TEXAS INSTRUMENTS SEMI UC3524AN NSFP UC3524AN TEXAS INSTRUMENTS SEMI TPS2024D FNFP TPS2024D TEXAS INSTRUMENTS SEMI IC723CN FNFP IC723CN TEXAS INSTRUMENTS SEMI SN7474J NSPP SN7474J TEXAS INSTRUMENTS SEMI TMS-2764-25JL NSPP TMS276425JL TEXAS INSTRUMENTS SEMI SN75ALS176BD FNFP SN75ALS176BD TEXAS INSTRUMENTS SEMI IC74LS123NSR FNFP IC74LS123NSR Texas Instruments DC Input 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PLC 2491579-0003 USPP 2415790003 TEXAS INSTRUMENTS PLC 2462158-0025 USPP 24621580025 TEXAS INSTRUMENTS PLC 2462188-0001 NSPP 24621880001 TEXAS INSTRUMENTS PLC 2462188-0001 USPP 24621880001 TEXAS INSTRUMENTS PLC 2491579-0001 NSPP 24915790001 TEXAS INSTRUMENTS PLC 2491579-0001 USPP 24915790001 TEXAS INSTRUMENTS PLC 2491579-0002 USPP 24915790002 TEXAS INSTRUMENTS PLC 2491579-0003 USPP 24915790003 TEXAS INSTRUMENTS PLC 2491579-0004 USPP 24915790004 TEXAS INSTRUMENTS PLC 2491579-0005 NSPP 24915790005 TEXAS INSTRUMENTS PLC 2491579-0005 USPP 24915790005 TEXAS INSTRUMENTS PLC 2491579-0006 NSPP 24915790006 TEXAS INSTRUMENTS PLC 2491579-0006 USPP 24915790006 TEXAS INSTRUMENTS PLC 2494055 USPP 2494055 TEXAS INSTRUMENTS PLC 2586268-0001 NSPP 25862680001 TEXAS INSTRUMENTS PLC 2586268-0001 USPP 25862680001 TEXAS INSTRUMENTS PLC 2586696-0001 NSFP 25866960001 TEXAS INSTRUMENTS PLC 2587676-8001 NSFP 25876768001 TEXAS INSTRUMENTS PLC 2587678-8006 NSPP 25876788006 TEXAS INSTRUMENTS PLC 2587678-8010 NSPP 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