Research on Semi-active Vibration Control Method of Cutting Arm Power Absorber for Coal Mine Excavation Equipment
BAO Zhenxing
LI Ang
GUO Zhifu
Abstract：A semi-active vibration control method using a variable damping dynamic absorber was proposed to address the severe vibration problem caused by the working load on the cutting arm of coal mine excavation equipment.A coupled dynamic model of cutting arm dynamic absorber was established based on the Lagrangian dynamic equation with dissipation function.According to the dynamic model,the physical parameters of passive and semi-active dynamic absorbers were calculated using fixed-point theory and iterative calculation methods.Standard ground control and switch ground control strategies were designed for the power absorber,achieving semi-active control of the power absorber.The comparison of simulation results showed that the standard ground shed control of the dynamic absorber could effectively reduce the vibration intensity of the cutting arm,significantly reduce the peak values of the first-order modal angle response and angular acceleration response of the cutting arm,and have the best control effect.
Keywords：vibration controldynamic vibration absorberground shed control
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：6( 1-6 )