In view of the problems of large energy consumption and low potential energy utilization of the traditional excavator boom hydraulic system,taking the excavator boom as a research object,the boom hydraulic system based on independent metering control was designed.The pressure-flow characteristics of the boom hydraulic system with the active load condition and retraction condition were analyzed,and the relationship between the valve opening ratio and the piston rod speed was obtained.Using the mechanical dynamics simulation software ADAMS and the hydraulic system simulation software AMESim,the joint simulation models of the traditional boom hydraulic system and the boom hydraulic system based on the independent metering control were established respectively.Then the joint simulation analysis of the two boom hydraulic systems with the active load condition and retraction condition was carried out.The simulation results show that the two boom hydraulic systems can obtain more linear piston rod velocity,and compared with the traditional boom hydraulic system,the potential energy utilization of the boom hydraulic system based on the independent metering control is significantly improved,which is about 44.3%.