Stability of Velocity-loop-based Hydraulic Control Loading System

摘要

A hydraulic Control Loading System (CLS) based on velocity-loop was developed and installed on our flight simulator earlier days,but the CLS cannot keep stable in some conditions.This problem is discussed in this paper.The mathematical model of velocity-loop-based CLS is firstly developed with the method of transfer function block diagram.Then,system's stability conditions are put forward using Roth criterion based on the system model developed.At last,the experiments proves the stability