Research on Harmonic Response of Hydraulic Screwdown System on Modern Hot Rolling Mill

摘要

In this paper, the dynamic mathematical model about the asymmetric three-potential four-way valve control asymmetric hydraulic cylinder is established, and a hot rolling mill hydraulic screwdown system simulation model is constructed to research the dynamic characteristics by MATLAB/Simulink. It is obtained that the displacement output curve of the hydraulic cylinder by changing the rolling different strip thickness. Finally contrasting the input and output spectrum curve, it found that given the vibration signal by hydraulic system can transfer to the hydraulic cylinder. At the same time it indicate that the computer simulation is the effective way that research the dynamic characteristics of the hydraulic screwdown.