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有刷直流電機(jī)特點(diǎn)

有刷直流電動(dòng)機(jī)的特點(diǎn)如下所示。

優(yōu)點(diǎn)

有 2 根導(dǎo)線，施加直流電壓即可旋轉(zhuǎn)。

反轉(zhuǎn)電源的極性會(huì)反轉(zhuǎn)旋轉(zhuǎn)方向。

由于使用了永磁體，直流電機(jī)結(jié)構(gòu)緊湊、重量輕且效率高。

起動(dòng)力矩大，可控性好。

扭矩與電壓(電流)成正比。

可以用干電池和電池操作。

低成本

缺點(diǎn)

電刷磨損會(huì)縮短使用壽命。

產(chǎn)生機(jī)械噪音。

產(chǎn)生電噪聲。

由于直流電機(jī)只需連接直流電源即可運(yùn)行，因此可用于多種應(yīng)用。然而，由于電刷與換向器相互滑動(dòng)會(huì)導(dǎo)致電刷磨損，因此需要對(duì)磨損粉進(jìn)行清理、更換電刷等定期維護(hù)。隨著電機(jī)使用數(shù)量的增加，維護(hù)變得越來越困難，這就增加了對(duì)長壽命免維護(hù)電機(jī)的需求。
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