機械的課程總結收集了一些別人在此鳴謝and technical measurement

Exchangeabilityandtechnicalfirstly,letmecorrectasmallmistake,thiscourseisn`tcalledexchangeability,itisabouteconomic.itsnamedinterchangeability,itisaboutmachinery.itmeanthat,thereisagroupofsameparts,wecanuseeachofthemwithoutrepairorselect.andthetechnicalmeasurementisaboutmeasuringunitandsymbol,howtodescribetheprecisiononthedrawingandthesizeForexample,Oversurpluscooperate（interferencefit）transitional(transitionalfit)Clearancecooperate(clearancefit)間隙配合。Iusesomepicturetoexinthese.fixedfit固定配合relativemotion相對運動Coaxialdegrees同軸度parallel平行smoothne光滑平面tolerance公差upperdeviationLowerdeviation下偏差roughnesscoaxialdegreesbasicholesystem基孔制（常用usedifferentshafttofitsamehole,becauseshafteasytoprocess）basicshaftsystem基軸制taylorprinciple泰勒原則(shaft:minimumrealsizebiggerthanminimumlimitsize.hole:umrealsizesmallerthan umlimitsize.)ElectronThiscourseintroducesomegatecircuitsintegratedcircuitBinary,Decimal十進制HexGate（A*Bandgate&A+Borgate>=1notgate1o非門Truthtable真值表Simplification簡化Karnaughmap卡諾圖Diodeitssemiconductor.Diodehasone-wayconductivity.Forexampleoscilloscopeswitchhigh-levellowlevel低電平Triode’sfunctionisamplification.positivenegativevoltageNPNNisthatAddphosphorusinhighpuritysiliconPisthatJoinboronrecesiliconPNPelectron空穴holeMultiply乘法MachineryengineeringAutomaticcontroltechnologyallowsustogreatlyimprovethecontrolwelearnedtheopen-loopcontrolsystem.Thiscontrolmethodissimplebutverydefective.Ifthesystemhasinterference,itwillaffecttheoutput.（畫一個圖controlelements---controlledobject）thenwelearnedtheclosed-loopcontrolsystem..Aclosed—loopsystem,theinputofthecontrolledobjectisdependentontheactualoutput.Sincetheoutputisfedback,andthensubtractedfromtheinput.Forexample,constantspeeddrivingacar,80km/h,whenwedriveupthehill,thespeedslowdown,thenthetachometerfeedthespeedback,thengas（feedbackrouthstabilityitisamethodfordeterminingcontinuoussystemstability,forsystemswithannth-ordercharacteristicequationoftheform.見書，再舉個例子MechanicalandelectricalSynchronousmotor同步電機Asynchronousmotor異步電機DCmotorthedcpowerisconnecteddirectlytothearmatureconductorsthroughthebrushandcommutator換向器.themagneticfieldisproducedbypermanentmagnets永fixedonthestatorthecurrentflowonthisway,fromatob,thenelectromagneticconducedbytheinctionofrotorandmagneticfield,sothemotorcanrun/rotateACmotorThree-phasealternatingcurrentRevolving旋轉Everlastingmagnet永磁鐵Armature電樞AdaptingpieceStator定子rotorGenerate 產生電磁力energizerotorThiscourseiselectivecourse,somyteacheronlyintroducesomesimplebasicdefinitions.Forexamplecompressibility(壓縮性thefluidhavecompressibility,becausebetweenmoleculeshasspacing,weincreasepressure,thevolumeoffluidwillbereduced.β單位Expansibility(膨脹性),weincreasethetemperatureoffluid,thevolumeoffluidwillincreased.β_tviscosityviscously粘性,itisinnerfrictionoffluid.velocitygradientladderform階梯形式，pipeHydraulicThiscourseintroduceHydraulicTransmissionandControl.itisatransmissionform,ittransportandcontrolenergybyliquidasmedium.controlcomponents—controloradjusttheliquidpressure,flowtyandflowdirection,suchasflowcontrolvalve,overflowvalve(keepconstantpressure)directionreversevalve換向閥(changeliquidflowdirection)hydraulicpump泵itsworkingtheoryisthat,changethesealvolumetoproducepressure.ABS(anti-lockbreakingsystem)whenyouarebreaking,thehydraulicpumpoutputpowertowheel,thepowerjustispressure,whenthepressureincreasetoohightolockwheel,theoverflowvalveunloadthepressuretounlockwheelsothewheelwillcan`tbelocked.maybemyexnationisnotaccurate,butthisisthebasictheory.Machineryintroducethebasicknowledgeaboutthedesignofeverypartofamachine。Fromthecourseweshouldknowwhatkindofrequirementweshouldfulfillforexampleweshouldfulfillthestrength(強度rigidity(剛度)。Nowadays,themostpartsarealreadystandardized,forreducecostandincreasetheinterchangeability.So,thiscourseteachushowtodesignthepartsthatarestandardized.Forexample,bolts,itseverysizearestandardized,itslengthwidthheight,buttheimportantdesignistheradius,becausetheradiusdecidethestrength.so,ifwewanttodesigntheradiusofbolts,wemastfirstknowtheloadthatitholdupandthematerialofbolts.Secondweworkouttherealradiusofbolts.Then,wefindthestandardradiusthroughthemachinerywormwheeln.蝸輪wormn.drive/transmissionbeltdrivechaindriveMachineryThiscourseintroducesomemachinetoolsandcuttingtheorywemainlylearnbasictheoryofcutterforexamplethecutter`sgeometricsizeWhatisworkingcuttingedgetoolface刀面rakeface前刀面noseoftool刀尖rakeangle前角clearanceangle后角。Themanufacturingtheoryintroducetheprocessingofparts,forexample,theoperation,weshouldfirstprocesswheretheyareeasilyprocessing?Theotherbenark基準ifwewanttoensureprecisionofthissize,weshouldmakepositionasbenark.Cuttingtheory angleandJig夾具benarkand workingfeedn.工作進給workingsurfacen.workpieceperipheraln.工件的圓周轉速workpiecerotationalfrequencyn.工件的轉速worktablen.工作臺主運動mainmovementdirectionofmaindirectionoffeedmovementcuttingrakefacenoseoftool前角rakeangleclearanceangleThiscoursemainlyintroducethattheapplicationofsignalatmachinery.Youknoweveryobjecthavefrequency,themachinehavefrequencytoo.Thetechnicalmeasurementjustusethischaractertocheckthemachine.Forexample,thereisamachine,weknockit,itwillshake,wecanusethesensortocollectthevibrationfrequency.Itisthemachine’snaturalfrequency.Onedayifthevibrationfrequencyofthismachinehavechanged,wecanknow,itmaybehavesomeproblem.Ofcourse,italsocanletmelearnthemachine,Inwitchfrequencythemachinecanworkbest.ModerndesignSimplesimulationofkinematicsItsfunctionsaremoreprofessional,butapplicationisnotVirtualSimulateMulti-bodyDynamicsItcanyzethecontactbetweenItsmodelcandirectlyleadtoADMSwithoutcorre