西门子6ES7315-2AH14-0AB0

6ES7315-2AH14-0AB0

如果您对电机的速度、位置都没有要求，只要输出一个恒转矩，当然是用转矩模式。

如果对位置和速度有的精度要求，而对实时转矩不是很关心，用速度或位置模式比较好。

如果上位控制器有比较好的闭环控制功能，用速度控制效果会好一点。如果本身要求不是很高，或者基本没有实时性的要求，用位置控制方式对上位控制器没有很高的要求。

就伺服驱动器的响应速度来看：转矩模式运算量小，驱动器对控制信号的响应快；位置模式运算量大，驱动器对控制信号的响应慢。

对运动中的动态性能有比较高的要求时，需要实时对电机进行调整。

如果控制器本身的运算速度很慢（比如PLC，或低端运动控制器），就用位置方式控制。

如果控制器运算速度比较快，可以用速度方式，把位置环从驱动器移到控制器上，减少驱动器的工作量，提率；

如果有的上位控制器，还可以用转矩方式控制，把速度环也从驱动器上移开，这一般只是控制器才能这么做。

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