有刷直流电机特点

有刷直流电动机的特点如下所示。

优点

有 2 根导线，施加直流电压即可旋转。

反转电源的极性会反转旋转方向。

由于使用了永磁体，直流电机结构紧凑、重量轻且效率高。

起动力矩大，可控性好。

扭矩与电压(电流)成正比。

可以用干电池和电池操作。

低成本

缺点

电刷磨损会缩短使用寿命。

产生机械噪音。

产生电噪声。

由于直流电机只需连接直流电源即可运行，因此可用于多种应用。然而，由于电刷与换向器相互滑动会导致电刷磨损，因此需要对磨损粉进行清理、更换电刷等定期维护。随着电机使用数量的增加，维护变得越来越困难，这就增加了对长寿命免维护电机的需求。
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