MC07B0015-5A3-4-00

MC07B0015-5A3-4-00伺服电动机又称执行电动机，在自动控制系统中，用作执行元件，把所收到的电信号转换成电动机轴上的角位移或角速度输出。分为直流和交流伺服电动机两大类，其主要特点是，当信号电压为零时无自转现象，转速随着转矩的增加而匀速下降。

问

请问交流伺服电机和无刷直流伺服电机在功能上有什么优点？

答

永磁交流伺服电动机同直流伺服电动机比较，主要优点有： ⑴无电刷和换向器，因此工作可靠，对维护和保养要求低。 ⑵定子绕组散热比较方便。 ⑶惯量小，易于提高系统的快速性波纹管联轴器。 ⑷适应于高速大力矩工作状态。 ⑸同功率下有较小的体积和重量。

伺服与步进比较      

伺服主要靠脉冲来定位，基本上可以这样理解，伺服电机接收到1个脉冲，就会旋转1个脉冲对应的角度，从而实现位移，因为，伺服电机本身具备发出脉冲的功能，所以伺服电机每旋转一个角度，都会发出对应数量的脉冲，这样，和伺服电机接受的脉冲形成了呼应，或者叫闭环，如此一来，系统就会知道发了多少脉冲给伺服电机，同时又收了多少脉冲回来，这样，就能够很的控制电机的转动，从而实现的定位，可以达到0.001mm。

MC07B0015-5A3-4-00  

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MC07B0015-5A3-4-00