Positioning Control Analysis of Hydraulic Support Push Cylinder
LI Yu
Abstract：The movement of the hydraulic cylinder in the fully mechanized mining face was controlled by an electro-hydraulic directional valve,which often leads to problems such as switching delay,poor control accuracy,and poor straightness.The working principle of the hydraulic cylinder was introduced,and the motion equation of the hydraulic cylinder was established.A positioning system for the hydraulic cylinder was designed.By using RBF neural network to accurately predict the two stages of pushing the piston rod of the oil cylinder,the error function relationship between the actual output value and the target value was derived.Importing the target position through Matlab simulation and comparing the simulated displacement with the target position shows a high degree of curve fitting.After experimental verification by Wangping Coal Industry,the actual position and target position comparison diagram were obtained by connecting according to the control test principle diagram.There is a displacement error of 3～5 mm between the two,and the fitting degree is high,achieving the goal of precise positioning control.
Keywords：push cylinderRBFpositioning controlMatlab
Publication Date：2024-10-12
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 58-62 )