Introduction
Infact,thedevelopmentofinformationprocessingtechnologyandnetworktechnologyhascompletelychangedtheconceptofsimulation.Combiningadvancedsimulationtechnologywithnetworktechnology,asimulationenvironmentiscomposedofrealequipmentandacomputersimulationsystem.Thecomputernetworkconnectsthenewweaponsystemwithdevelopersandusersscatteredindifferentlocations,allowinguserstosimulateThe“use”oftheweaponsbeingdevelopedintheenvironmentallowsthedeveloperstounderstandthecombatuseoftheweaponsinadvance,andthetwosideswillconductjointresearchtodiscoverandsolveproblemsintime.Thisnotonlyspeedsupthedevelopmentofweaponsystems,butalsoshortensthetimeittakesfornewweaponstoformcombateffectiveness.Intermsofteamtraining,simulationtechnologyisalsoveryuseful.Bytheendofthe1980s,theUSArmystillusedfieldtrainingandsimulationtrainingtotrainsoldiers.Themainproblemoffieldtrainingisthehighconsumptionoffuelandammunition,thedifficultyofthevenue,andtheorganizationoflarge-scaleexercisesaretime-consumingandlaborious;forsimulationtraining,thesimulatorusedmaybemoreexpensivethantherealequipmentitsimulates.Inordertosolvetheproblemoftrooptraining,theAdvancedResearchProjectsAgencyoftheUSDepartmentofDefensebegantoimplementasimulatornetworkingplanin1983,connectingtrainersscatteredinvariousplacesintoanetworkwithcomputerstoformadistributedinteractivesimulationtoachieveremoteconnectivityandinteroperability.Simulationtechnologyisakeytechnologyfornationaldefense.Itwillplayanincreasinglyimportantroleinimprovingtheefficiencyofweaponsystemdevelopment,improvingtrooptraining,andimprovingcombateffectiveness.Ithasbecomeanimportantmeansfordevelopedcountriestoachievequalitymilitarybuilding.
Simulationtool
Mainlyreferstosimulationhardwareandsimulationsoftware.Themostimportantthinginthesimulationhardwareisthecomputer.Therearethreetypesofcomputersusedforsimulation:analogcomputers,digitalcomputers,andhybridcomputers.Digitalcomputerscanalsobedividedintogeneral-purposedigitalcomputersandspecial-purposedigitalcomputers.Theanalogcomputerismainlyusedforthesimulationofcontinuoussystems,whichiscalledanalogsimulation.Inthesimulationsimulation,accordingtothesimulationmodel(hereistheset-updiagram),theoperationalamplifiersareconnectedasrequired,andtherelevantcoefficientdevicesareadjusted.Themodelcanbemodifiedbychangingtheconnectionformoftheoperationalamplifierandthesettingvalueofeachcoefficient.Thesimulationresultscanbeoutputcontinuously.Therefore,thesimulationcomputerhasgoodhuman-computerinteractionandissuitableforreal-timesimulation.Changingthetimescalecanalsorealizesuperreal-timesimulation.Digitalcomputersbeforethe1960swerelimitedintheirapplicationinsimulationduetotheirlowcomputingspeedandpoorhuman-computerinteraction.Moderndigitalcomputershaveveryhighspeeds,andsomespecialdigitalcomputershavehigherspeeds,whichcanalreadymeettherequirementsofreal-timesimulationofmostsystems.Duetothedevelopmentofsoftware,interfacesandterminaltechnologies,thehuman-computerinteractionhasalsobeenimproved.Greatimprovement.Therefore,digitalcomputershavebecomethemaintoolsofmodernsimulation.Hybridcomputersworktogetherwithanalogcomputersanddigitalcomputers,andgivefullplaytothehighspeedofanalogcomputersandthehigh-precision,logicaloperationsandstoragecapabilitiesofdigitalcomputers.However,thiskindofsystemisrelativelyexpensiveandshouldonlybeusedinsomestrictsystemsimulations.Inadditiontocomputers,simulationhardwarealsoincludessomededicatedphysicalsimulators,suchasmotionsimulators,targetsimulators,loadsimulators,environmentsimulators,etc.
Simulationsoftwareincludessimulationprogramsforsimulationservices,simulationpackages,simulationlanguages,andsimulationsoftwaresystemswithadatabaseasthecore.Therearemanytypesofsimulationsoftware.Intheengineeringfield,itisusedforsystemperformanceevaluation,suchasmechanismdynamicsanalysis,controlmechanicsanalysis,structuralanalysis,thermalanalysis,processingsimulation,etc.ThesimulationsoftwaresystemMSCSoftwarehasbeenusedinhigh-techfieldssuchasaerospace45yearsofapplicationhistory.
Simulationmethod
Mainlyreferstothemethodofestablishingsimulationmodelandconductingsimulationexperiment,whichcanbedividedintotwocategories:simulationmethodofcontinuoussystemandsimulationmethodofdiscreteeventsystem(seeSimulationmethod).Peoplesometimesincludethemethodofestablishingamathematicalmodelasasimulationmethod.Thisisbecausealthoughthereareasetoftheoreticalandexperimentalmodelingmethodsforcontinuoussystems,whenthesystemissimulated,theapproximatemodelobtainedthroughassumptionsisoftenusedfirst.Totestwhetherthehypothesisiscorrect,modifythemodelifnecessarytomakeitclosertotherealsystem.Forthediscreteeventsystemtoestablishitsmathematicalmodelispartofthesimulation.
ApplicationandBenefits
Themainreasonforthedevelopmentofsimulationtechnologyisthehugesocialandeconomicbenefitsitbrings.Inthe1950sand1960s,simulationwasmainlyusedinengineeringtechnologyfieldssuchasaviation,aerospace,electricpower,chemicalindustryandotherindustrialprocesscontrol.Intheaviationindustry,theuseofsimulationtechnologyhasshortenedthedesignanddevelopmentcycleoflargepassengeraircraftby20%.Usingflightsimulatorstotrainpilotsonthegroundnotonlysavesalotoffuelandmoney(thecostisonlyone-tenthofthatofairflighttraining),butitisnotrestrictedbymeteorologicalconditionsandvenues.Inaddition,somefaultsthatcannotbesetduringairtrainingcanbesetontheflightsimulatortocultivatethepilot'sabilitytodealwithfaults.Theuniquesafetyofthetrainingsimulatorisalsoanimportantadvantageofsimulationtechnology.Intheaerospaceindustry,theuseofsimulationexperimentsinsteadoflive-firetestscanreducethenumberoflive-firetestsby80%.Inthepowerindustry,thesimulationsystemisusedtodebug,maintainandtroubleshootnuclearpowerplants,andthecostofbuildingthesimulationsystemcanberecoveredinoneyear.Modernsimulationtechnologyisnotonlyappliedtotraditionalengineeringfields,butalsoincreasinglywidelyusedinsocial,economic,biologicalandotherfields,suchastrafficcontrol,urbanplanning,resourceutilization,environmentalpollutionpreventionandcontrol,productionmanagement,marketforecasting,worldeconomicanalysisandForecasting,populationcontrol,etc.Forsystemssuchassocialeconomy,itisdifficulttoexperimentonrealsystems.Therefore,itismoreimportanttousesimulationtechnologytostudythesesystems.
Developmentdirection
Intermsofemulationhardware,digitalcomputershavegraduallybeenadoptedmorethananalogcomputerssincethe1960s.Thehybridcomputersystemstagnatedinthe1970s,andtherehasbeenatrendofdevelopmentsincethe1980s.Duetothedevelopmentofminicomputersandmicroprocessors,aswellastheadoptionofpipelineprinciplesandparalleloperations,thespeedofdigitalsimulationoperationshasincreased.breakthrough.Forexample,thecombinedworkoftheultra-smallVAX11-785andtheperipheralprocessorAD-10canperformreal-timesimulationoflargeandcomplexflightsystems.Intermsofsimulationsoftware,inadditiontothefurtherdevelopmentofinteractivesimulationlanguagesandmorepowerfulsimulationsoftwaresystems,anotherimportanttrendistocombinesimulationtechnologyandartificialintelligencetoproducesimulationsoftwarewithexpertsystemfunctions.Thescaleandcomplexityofsimulationmodelsandexperimentalsystemsareconstantlyincreasing.Researchontheireffectivenessandconfidencewillbecomeveryimportant.Atthesametime,theestablishmentofapplicablebenchmarkstoevaluatethesystemhasalsoreceivedincreasingattention.
Introductiontosimulationsoftware
SimuWorks®isdesignedforlarge-scalescientificcalculations,complexsystemdynamiccharacteristicsmodelingresearch,processsimulationtraining,systemoptimizationdesignanddebugging,faultdiagnosisandexpertsystems,etc.Provideauniversal,integrated,whole-processsupport,developmentandoperationsupportplatformbasedonamicrocomputerenvironment.Thesoftwareadoptsdynamicmemorymachinecodegenerationtechnology,distributedreal-timedatabasetechnologyandobject-orientedgraphicalmodelingmethods,andisattheleadingdomesticlevelinthefieldofsimulation.Itismainlyusedintheresearchfieldsofenergy,electricpower,chemicalindustry,aerospace,nationaldefenseandmilitary,economics,etc.Itcanbeusedforscientificresearchinscientificresearchinstitutesandpracticalengineeringprojects.
1.ThecompositionofSimuWorks®
TheproductsoftheSimuWorksplatformmainlyinclude
1.ThesimulationsupportplatformSimuEngine(theearlyversionisVcs3,SE2000)
2,graphicalmodelingtoolsSimuBuilder(earlyversionsTHAms,FigAms),includingmoduleresourcemanagerSimuManager
3,moduleresourcelibrarySimuLib(including:control,Electricity,heat,flownetwork,powergrid)
4,Embeddedreal-timeoperatingsystemsimulationplatformSimuERT
5,Simulationreal-timegraphicssystemSimuMMI
2.ThemainfeaturesofSimuWorks®
1.Theuseofdynamicmemorymachinecodegenerationtechnology,combinedwithdistributedreal-timedatabase,provideshigh-efficiencyfordistributedcomputingandreal-timesimulationofcomplexsystemsinamicrocomputerenvironment
2.Theobject-orientedgraphicalmodelingmethodisadoptedtoprovideageneralmodeldevelopmentenvironmentforsimulationscientificresearchandengineeringpracticeindifferentfields.
3.SimuWorksintegratesvariousfunctionsrequiredforsystemsimulation,formingawholesetofpipelinesfromdevelopment,debugging,verification,tooperation,analysis,etc.,creatinga"systemsimulationpipelinedevelopmentThenewconceptof"factory"greatlyimprovesthedevelopmentefficiencyofsimulationengineeringprojects;
4.Inlarge-scalereal-timesimulationsystems,ordinarycommercialdatabasescannotmeetthereal-timerequirements.TheSimuEnginesimulationengineinSimuWorksprovidesAhigh-speednetworkreal-timedatabasecanrealizedistributedcalculationofmultiplemodels,dynamicdatadisplayandonlinedatamodification,andcanmeettheneedsofthedevelopmentandoperationoflarge-scalereal-timesimulationsystems.
3.TheworkflowofSimuWorks®
●TheworkflowofusingSimuWorksforsimulationdevelopmentis:
●ForthesystemUserscanuseSimuManagertoexpandtheprofessionalmodulesandsomegeneralmodulesprovided;
●IntheSimuBuilderenvironment,usethemodulesprovidedbythesystemandthemodulesdevelopedbytheuser.Accordingtothecompositionofthesimulationobjects,usegraphicsCombinemodulesinawaytobuildasimulationsystem;
●WithSimuEngine’ssimulationsupport,useSimuBuildertodebugthebuiltsimulationsystemuntilastablefinalproductisformed;
●FinallyTheproductonlyreliesonSimuEnginetorunandisusedfortaskssuchasscientificresearchandtraining.