2011•Journal of Heilongjiang Institute of Science and TechnologyRequires access
Numerical simulation hydraulic pressure height adjustment proportion control system of shearer's drum
Yanjun Zhang
Open publisher page 0 citations
Abstract
Aimed at realizing the gliding property of cutting memory drum height adjusting curves and the reducing the shaking of height adjusting system,this paper discusses the development of the transfer functions and controller models of electro-hydraulic proportional directional valve and solenoid directional control valve height adjusting system and the analysis of the characteristics of its system working pressure、flow and acceleration using method of co-simulation of Matlab/Simulink and Automation Studio.The simulation results show that height-adjusting system controlled by electro-hydraulic proportional directional valve yields smaller curves shaking of pressure,flow,and acceleration than that controlled by solenoid directional control valve,obviously reducing the height adjusting start impact of drum cutting and improving shearer working reliability,which serves for the design of height adjusting control system of shear drum.