Research Of Dynamic Characteristics Of The Hydraulic System Of The Partial Cross Section Tunneling Machine

Hydraulic system is an important component part of roadheader, its performance is largely affected by the dynamic characteristics of the hydraulic system. This subject proceeds from the reality, carrys on detailed research to the hydraulic system of, on the basis of fully grasping system principle and modeling theory of the power bond graph, the dynamic mathematical model of every hydraulic component of the system is set up by the method of power bond graph, Simulink model of the partial cross section tunneling machine load system , in the middle of conveyer system, walk system and hydraulic jar system are set up by Simulink toolbox of the MATLAB software, and the digital emulation of hydraulic system of the roadheader is carried on, the ideal systematic dynamic characteristic curve is got, then the artificial result is analyzed, and through changing the systematic parameter, study the impact on hydraulic systematic dynamic characteristic of the partial cross section tunneling machine of every parameter, establish the foundation for the hydraulic and systematic design improvement of the roadheader.