140DDO15310C Quantum

伺服電機(jī)可以控制速度，位置精度非常準(zhǔn)確，可以將電壓信號轉(zhuǎn)化為轉(zhuǎn)矩和轉(zhuǎn)速以驅(qū)動(dòng)控制對象。伺服電機(jī)轉(zhuǎn)子轉(zhuǎn)速受輸入信號控制，并能快速反應(yīng)，在自動(dòng)控制系統(tǒng)中，用作執(zhí)行元件，且具有機(jī)電時(shí)間常數(shù)小、線性度高等特性，可把所收到的電信號轉(zhuǎn)換成電動(dòng)機(jī)軸上的角位移或角速度輸出。分為直流和交流伺服電動(dòng)機(jī)兩大類，其主要特點(diǎn)是，當(dāng)信號電壓為零時(shí)無自轉(zhuǎn)現(xiàn)象，轉(zhuǎn)速隨著轉(zhuǎn)矩的增加而勻速下降。

　　下面我們來看一下伺服電機(jī)和其他電機(jī)相比到底有什么優(yōu)點(diǎn)：

   1、精度：實(shí)現(xiàn)了位置，速度和力矩的閉環(huán)控制;克服了步進(jìn)電機(jī)失步的問題;

　　2、轉(zhuǎn)速：高速性能好，一般額定轉(zhuǎn)速能達(dá)到2000~3000轉(zhuǎn);

　　3、適應(yīng)性：抗過載能力強(qiáng)，能承受三倍于額定轉(zhuǎn)矩的負(fù)載，對有瞬間負(fù)載波動(dòng)和要求快速起動(dòng)的場合特別適用;

　　4、穩(wěn)定：低速運(yùn)行平穩(wěn)，低速運(yùn)行時(shí)不會產(chǎn)生類似于步進(jìn)電機(jī)的步進(jìn)運(yùn)行現(xiàn)象。適用于有高速響應(yīng)要求的場合;

　　5、及時(shí)性：電機(jī)加減速的動(dòng)態(tài)相應(yīng)時(shí)間短，一般在幾十毫秒之內(nèi);

　　6、舒適性：發(fā)熱和噪音明顯降低。

　　簡單點(diǎn)說就是：平常看到的那種普通的電機(jī)，斷電后它還會因?yàn)樽陨淼膽T性再轉(zhuǎn)一會兒，然后停下。而伺服電機(jī)和步進(jìn)電機(jī)是說停就停，說走就走，反應(yīng)極快。但步進(jìn)電機(jī)存在失步現(xiàn)象。

　　伺服電機(jī)的應(yīng)用領(lǐng)域就太多了。只要是要有動(dòng)力源的，而且對精度有要求的一般都可能涉及到伺服電機(jī)。如機(jī)床、印刷設(shè)備、包裝設(shè)備、紡織設(shè)備、激光加工設(shè)備、機(jī)器人、自動(dòng)化生產(chǎn)線等對工藝精度、加工效率和工作可靠性等要求相對較高的設(shè)備。

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