臺達(dá)伺服電機，又名，臺達(dá)伺服馬達(dá)，是將電信號轉(zhuǎn)換成轉(zhuǎn)軸的角位移或角速度的補助馬達(dá)間接變速裝置，是可以連續(xù)旋轉(zhuǎn)的電——機械轉(zhuǎn)換器，是在自動化控制系統(tǒng)中控制機械元件運轉(zhuǎn)的微特電機（又名：執(zhí)行電機）。
它是由臺灣臺達(dá)獨立研發(fā)、生產(chǎn)和銷售。
1.運行穩(wěn)定；
2.可控性好；
3.響應(yīng)快速；
4.靈敏度高；
5.機械特性和調(diào)節(jié)特性的非線性度指標(biāo)嚴(yán)格（要求分別小于10%～15%和小于15%～25%）等特點；
二、臺達(dá)伺服電機的優(yōu)勢：
伺服電機有交流伺服電機和直流伺服電機兩種，臺達(dá)伺服電機屬于交流伺服電機，與直流伺服電機比較，主要優(yōu)勢如下：
1.無電刷和換向器，因此工作可靠，對維護和保養(yǎng)要求低；
2.定子繞組散熱比較方便；
3.慣量小，易于提高系統(tǒng)的快速性；
4.適應(yīng)于高速大力矩工作狀態(tài)；
5.同功率下有較小的體積和重量。
三、臺達(dá)伺服電機功能：
臺達(dá)伺服電機的功能，是精確地控制自動化控制系統(tǒng)中機械元件速度、扭矩，準(zhǔn)確地控制機械元件的位置。
四、臺達(dá)伺服電機工作原理：
臺達(dá)伺服電機的工作原理與交流感應(yīng)電動機相同：在定子上有兩個相空間位移90°電角度的勵磁繞組Wf和控制繞組WcoWf接一恒定交流電壓，利用施加到Wc上的交流電壓或相位的變化，達(dá)到控制電機運行的目的。
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