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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