Effective Method of Identifying Mathematical Model——A Research on Distinguishing Mathematical Model Electro-Hydraulic Servo Valve by Pulse Signal

In order to make the electro-hydraulic control system work reliably,a full understanding of mathematical model in the core element——electro-hydraulic servo valve of this system must be gained.This paper introduces a practice that tests the electro-hydraulic servo valve by means of inputting pulse signals and determines the dynamic mathematical model according to the theory of identification.Then the application prospect of modeling with pulse principle has been pointed out.