Dynamic Simulation of Hydraulic System Speed into Switching Based on Power Bond Graph and Matlab/Simulink

This paper researches the work progress of dual pumps oil supply hydraulic system when the fast-forward switches to the slow-forward about the response speed of the pump pressure, valve opening and instantaneous flow. Use Power Bond Graph to create the state equations of hydraulic system, analyze the power flow when the initial value of the state variables are given, as well as the instantaneous input flow value, output flow value. And use Matlab/Simulink simulation software to establish system simulation model, set a reasonable simulation parameters, to get more accurate simulation results, and to output the required simulation graphics in order to further analyze the system.