Co-simulation Of Load Sensing System Of Excavator And Energy Consumption Research Of Excavator

A hydraulic excavator is a kind of construction machinery with the typical functions,the complicated work condition and the very extensive using .Our country is now in high-speed developmental stage and excavators are employed in a lot of infrastructure work. But rising of oil prices make the cost of using excavator increase in the last few years, coupled with the increased requirements of the emission standard,energy-saving excavator is the developing direction and trend. At present, domestic and foreign manufacturers invest a lot of money for energy consumption research of excavators during a dutycycle.It is difficult to change parameters or condition and wasting time if we use simply the traditional experimental methods for the energy consumption research of excavator during a dutycycle , even sometimes it has no way to do it. Therefore, simulation technology base on computer have developed rapidly, and many manufacturers, especially some colleges and universities ,they use simulation software for energy-saving research. but most of them simulate separately for dynamics and kinematics of working equipment and hydraulic system of excavator. However, By separate simulation for kinematics and dynamics analysis of excavator with ADAMS, the main work is to solve the problem of optimal design of the excavator's arm and intelligent control, it can't be carried out analysis of energy consumption, because the main energy consumption of excavator come from the hydraulic system ; By separate simulation for the hydraulic system of excavator with AMESim or MATLAB / Simulink, it can't take into account the change of moment of inertia, and with the change of excavation in position and speed, the moment of inertia is also constantly changing, so , a separate simulation method can not accurately simulate the real working environment of excavator.The paper studies concretely YC60-7 excavator produced by Yuchai Guangxi ,by co-simulation with ADAMS and AMESim,we resolve well the above problems and offer the more accurate theory and gist for energy consumption research of hydraulic system during a dutycycle of exvavator. Specific contents are:1.Establishing dynamics model of excavator's work equipment by using newton-euler method.2. Measuring actually the size of excavator's work equipment, the 3D model of excavatot's parts and components are established by utilizing Pro/E ,and assembling according to the actual connecting situation, and then model that have been established will be imported into ADAMS by utilizing Mechpro and carrying out dynamics simulation and analyze forced situation of excavator's three cylinders during the course of excavating.3. Establishing load sensing and pressure compensation hydraulic system of excavator by utilizing AMESim,and importing dynamics model that have been established into it and carrying out co-simulation,and then analyzing energy consumption during the course of excavating4. Through the analysis of the simulation results, this paper present a new type hydraulic system that named electronic pressure compensation and flow match. and by co-simulation ,this paper contrast energy consumption of load-sensing and pressure compensation,electro-hydraulic load-sensing,electronic pressure compensation and flow match.The project is the study content of the National Natural Science Foundation of China "the theory and method research of continuous control of new notional electrohydraulic flow,direction ", the project's approval /application number: 50775156/E051202,and is the study content of "the principle research of new-style proportional valve and electrohydraulic load-sensing base on flow mate"that Doctor point Foundation support,the project serial number: 20070112007.