2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、附錄NumericalcontrolsystemdevelopmentbriefhistytendencyIn1946wasbninthewldthefirstelectronicaccountingmachinethisindicatedthehumanitycreatedhasbeenpossibletostrengthenpartiallytoreplacethementallabthetool.Itwiththehumanity

2、thesewhichintheagriculturetheindustrysocietycreatedonlyisstrengthensthephysicallabthetooltocomparegotupthequantitiveleapenteredtheinfmationsocietyfthehumanitytolaythefoundation.After6yearsnamelyin1952thecomputertechnolog

3、yappliedontheenginebedwerebnthefirstnumericalcontrolenginebedinUS.Fromthistimeonthetraditionalenginebedhashadthearcherytargetchange.Sincenearlyhalfcenturythenumericalcontrolsystemhasexperiencedtwostagessixgenerationofdev

4、elopment.Theearlycomputeroperatingspeedislowwasnotbigtothensciencecomputationthedataprocessinginfluencebutcouldnotadapttheenginebedrealtimecontrolrequest.Thepeoplecannotbutusenumerallogiccircuit“Builds“Becomesanenginebed

5、specialpurposecomputertotakethenumericalcontrolsystemiscalledthehardwareconnectionnumericalcontrol(HARDWIREDNC)iscalledfthenumericalcontrol(NC).Alongwiththeprimarydevicedevelopmentthisstagehashadbeenthroughrepeatedlythre

6、egenerationsnamely1952firstgenerationofelectrontube1959secondgenerationtransist1965thirdgenerationsmallscaleintegrationelectriccircuit.To1970thegeneralminicomputeralreadyappearedthemassproduction.Thereupontransplantsitta

7、kesthenumericalcontrolsystemthecepartfromthistimeonenteredthecomputernumericalcontrol(CNC)thestage(“whichshouldhavethecomputerinfrontofGeneral“Twoactershaveabbreviated).To1971surfaceprogrammingwkingcrespondenceundertakes

8、thenumericalcontroldutybytheiginalsystem.PCmachinehasthefriendlymanmachinecontactsurfacewillpopularizetoallnumericalcontrolssystem.Thelongdistancecommunicationthelongdistancediagnosistheservicewillbemecommon.2.approaches

9、highspeedthehighaccuracydevelopmentThisisadaptstheenginebedtobehighspeedthehighaccuracydirectionneedtodevelop.3.developstotheintellectualizeddirectionAlongwiththeartificialintelligenceinthecomputerdomainunceasingseepaget

10、hedevelopmentthenumericalcontrolsystemintellectualizeddegreeunceasinglywillenhance.(1)appliestheadaptivecontroltechnologyThenumericalcontrolsystemcanexamineintheprocesssomeimptantinfmationtheautomaticcontrolsystemrelated

11、parameterachievestheimprovementsystemrunningstatusthegoal.(2)introducestheexpertsysteminstructionprocessingTheskilledwkerexpertsexperiencetheprocessinggeneralrulethespecialrulesteinthesystemtakethecraftparameterdatabasea

12、sthestruttheestablishmenthastheartificialintelligencetheexpertsystem.(3)introducesthebreakdowntodiagnosetheexpertsystem(4)intellectualizednumeralservodriveMaythroughtheautomaticdiagnosisloadbuttheautomaticcontrolparamete

13、rcausestheactuationsystemtoobtainthebestmovement.SecondtoourcountrynumericalcontroltechnologyitsindustrialdevelopmentbasicestimateOurcountrynumericalcontroltechnologystartin1958thenear50yeardevelopmentcourseapproximately

14、mightdivideinto3stages:Firststagefrom1958to1979namelyenclosedtypedevelopmentphase.Inthisstageasaresultoftheoverseastechnicalblockadeourcountryfoundationconditionlimitthenumericalcontroltechnologydevelopmentisslow.Theseco

15、ndstageisinthecountry“65““75“theperiodaswellas“85“theearlierperiodnamelytheintroductiontechnologythedigestionabsptioninitiallyestablishesthedomesticproductsystemstage.Inthisstageasaresultofrefmopenpolicythenationalvaluea

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