Be sure that this id doesn't change over time by inadvertently passing in variables from the controller - in the case of the feed id, you want it to be both unique and invariant.

应确保这个id以后不会因为无意中传入来自控制器的变量而变化—对于feed id，它应该既是惟一的，又是不变的。

youdao

With functions as PD controller, general fuzzy controller takes error and error change as its input parameters, which has over shoot and poor anti, disturb ability.

普通的模糊控制器是以误差和误差的变化作为输入量，类似常规PD控制器的作用，存在超调、抗干扰能力差的弊端。

youdao