The principle of output side control and its

Through the analysis of the principle of the overflow tank, the concept of the output side control is proposed, and a model of the output side feed forward control is extracted from the instance. Three examples of the output side feed forward control are given, that is used in current control, flow control and rotational speed control respectively. Experiments show that the model is feasible and it has an advantage over the input side feedback system not only in system stability but also in the bearing of high precise system, long time delay system and inexact mathematical model system.