inimumamountoftimespent.ToachievethisgoalthemodelinglanguageModelica(Modelica),theModelicasimulationenvironmentDymola(Dymola),thenewModelicalibraryfor-dimensionalmechanicalsystems“MultiBody”(Otteretal.)andtheModelicalibraryofhydrauliccomponentsHyLib(Beater)wasused.Themodelconsistsofthe-dimensionalmechanicalconstructionoftheexcavator,adetaileddescriptionofthepowerhydraulicsandageneric“loadsensing”controller.ThismodelwillbeavailableasademointhenextversionofHyLib..ConstructionofExcavatorsInFigureaschematicdrawingofatypicalexcavatorunderconsiderationisshown.Itconsistsofachaintrackandthehydraulicpropeldrivewhichisusedtomanoeuvrethemachinebutusuallynotduringaworkcycle.Ontopofthatisacarriagewheretheoperatorissitting.Itcanrotate毕业设计(论文)报告纸共页第页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊aroundaverticalaxiswithrespecttothechaintrack.ItalsoholdstheDieselengine,thehydraulicpumpsandcontr