电气工程APS审核资料.docx
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电气工程APS审核资料.docx
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电气工程APS审核资料
基础课:
1.Advancedmathematics高等数学
Thisisamathematicfoundationcoursefocusmainlyonthecalculus.Welearnedaboutfunctions,limits,derivatives,differentiationandintegration.Wealsolearnedtheapplicationofthesemethods.
2.Complexvariablefunctionsandintegraltransformation复变函数
Inthiscourse,Ilearnedaboutthecomplexnumbers,andtheLaplacetransform.
Laplacetransformismoreusedinsolvingdifferentialandintegralequation.Hereisanexample:
3.ProbabilityandMathematicalStatistics概率论与数理统计
Ilearnedabouthowtocalculatetheprobabilityofacertainevent.Forexample,therearetenballsinthebox,4areredandtherestareblue,thentheprobabilityofgrabbing2redballwithoutputtingthembackisP=C2-4/C2-10=(4*3/2)/(10*9/2)=2/1
4.FundamentalOfCollegeComputer大学计算机基础
Thiscoursetaughtmeaboutthebasicuseandcomponentsofcomputer.Ilearnedabouthowtomakingflashandsimplewebpages.
3.CollegePhysics大学物理
Inthiscourse,Ilearnedaboutthermology,optionsandsomebasicknowledgeofelectromagneticincludedFourday,Lorentz,Lentzandsoon.
Forexample:
4.PhysicsExperiment物理实验
Howtoutilizetheequipmentrightly,observethephenomenon,measuretherecords,andfinallyanalyzetheresults.
Example(Themeasurementofinertiamoment)
5.ProgramminginClanguageC语言程序
ThiscourseisabouthowtoprograminClanguage.
HereisanexampleshowinghowtocomparetwointegerwithC:
#include
Voidmain()
{
inta,b,max;
scanf(“%d,%d”,&a,&b);
if(a>=b)
max=a;
else
max=b;
printf(“max=%d\n”,max);
}
6.EngineeringDrawing工程制图
Thiscourseisabouthowtocommunicateallneededinformationofadesignedpartfromengineertotheworkerwhowillmakeit.Tobemorespecific,Ilearnedaboutthird-angleprojection,sectionview,whichshowsinternalfeaturesthatarenotcleardefinedwithregularprojections.IalsolearnedhowtodrawwithCADsoftware.
7.Microchipprincipleandapplication微机原理与应用
Thiscourseisafoundationfocusmainlyontheassemblinglanguage.Wealsolearnedthebasicinstrumentandinnercircuitofcomputer.
8.Singlechip
Inthiscourse,Ilearnedhowtorealizethefunctionofsinglechipbywritingtheresource.First,teachershowedustheinnercircuitandprincipleofchip,thenwasthefunctionofeachpins.finally,wehadaprocessingwhichkepttwoweekends.
9.TechnicOfElectrotechnic
Inthiscourse,Ihavelearnedaboutthebasicknowledgeofcircuitsanditsbasiclaws.SuchasOhm’slaw(I=U/R,current,potentialdifference,resistance.),Kirchhoff’scurrentlaw,Kirchhoff’svoltagelaw.
Kirchhoff’scurrentlaw:
Thecurrentflowoutofanodeisequaltothecurrentflowsintothenode.
Kirchhoff’svoltagelaw:
Thedirectedsumofthepotentialdifferenceinanyclosedcircuitiszero.
Example(drawasimplecircuit)
10.BasicMechanicEngineering
1)ConceptofMachine:
Organization:
eachparthastherelativemotion,realizethemotion’stransmitandconvert.
Mechanism:
partment,whichcabrealizetheEnergyconvertiontoaccomplishusefulworks.
Transmission:
whichtransmittheenergyandrealizethemodulationofspeed.
2)Forceanalysis:
Distortion,stables,damage
Theaimofforceanalysisisdeterminewhethertheelementasdesireddescribedloadingtoensurethenormaloperation.
1))Threecharacteristics:
rigiditystrengthstability
2))Threedefectforms:
Axialtensil,Cutandextrusion,bent
Example:
正应力(强度和刚度),剪切与挤压等。
3)CommonMachine:
Leakage.
11.ElectronicTheorem:
1.whataretheelectronics.
Electronics,whichincludeanymachinepoweredbyelectricity,mainlyhaveeffectontheconnecting,breaking,parameter’schangingofcircuit,inordertorealizethecontrol,monitor,protectofelectricalequipment.
2.Maincomments:
Electro-magneticmachineconcludethesystemandprincipleandArctheoremconcludethecharacteristicandapplication.
Electro-magneticsystem:
whenthecurrentorvoltageintothecoil,itwouldgeneratesthemagneticfield.Thefluxwouldthroughmajoritytheironbeam,yoke,keeper,air-gapencloseandgeneratestheforceonthefaceofkeepercalledEMforce.
Whentheattractiveforcecanagainsttheforceofspringforce,itcanbeclosed.
Arc:
isaphenomenonofgasdischarge.Theneutralgasisdissociatedandproducesanongoingplasmadischarge.
Becausethehightemperaturecandamagetheconnector,sowemusteliminatethearcasquicklyaspossible.
Eliminatemethods:
SF6,magneticblowout,airlancing.
Therest:
直易交难灭弧(AC/DC的各自特点),thermalinertia热惯性,
吸力的计算公式推导过程;
13.PowersupplyEngineering:
(powersystemandpowersupplycircuit)
Apowersupplysystemisasystemwhichincludedthetransformer,electrics,wire,cableandsoon.
1)Basictheorem:
Loadscalculation(sumofratedpowerandthemeaningofit:
whencalculatewereover,theelectronicswouldoperateundertheheatingotherwisewasteoftheenergyandmaterials.)
2)Maincircuit:
thechoiceoftransformerandwireandcable
Functionoftransformer:
boostandreducethevoltageandisolation,protection.(3phasenon-exciteddoublewindingdrytype)
wireandcable:
1))cableusedforpowertransmissionanddistribution
2))bareconductor:
usedforoverheadline
3))insulatedwire:
endofconnectionoflow-voltage
Secondarycircuitforprotecting,monitoring,controllingandsoon.
3)relayingprotectionincircuit:
Forms(current,voltage)
Reversingandlimit-timerelayingprotection
Thecharacteristicofthemandtheapplication
Forexample:
14.Automaticcontroltheory:
focusmainlythefeedbacksystemandanalyzetheFS.
1)whatisthefeedbacksystemandautomaticcontrol(transferfunction,meaningoftransferfunctionandsoon.)
2)analysisofthefeedbacksystem:
stabilitytrainsientperformance
Includethetimedomainanalysis(低阶low-order,高阶high-order,性能分析performance),rootlocus,frequencyproperty.
15.DigitalElectronics:
studythediscretecomparedwiththeanalogelectronics
Maincomments:
logicconnectionbetweenthediscrete.
1)gatecircuit:
ANDORNOTXORandsoon,threeformsexpressionfunction,truthtable,circuitmap.
2)combinatoriallogiccircuit:
halfadder,fulladderanddifference
Methodofmorecomplexlogic:
First,listthetruthtableandthenusedthekarnaugh-maptosimplify,getthelogicfunction,finallydrawthecircuitgragh.
3)Temporallogiccircuit:
Itisconsistofcombinationcircuitandtriggerwhichasastorageunit.Thestoragecircuitfeedbacktotheinputofcombinationithasapresentstatementandnextstatement.
15.Analogelectronics:
studytheSemiconductorsandit’sapplication.
1)diode:
Function:
currentcanpassinforwardwayandbeclockedinreverseway.
Principle:
addsomeimpurityintoinstrinsicsemiconductor,p-typeisoneputintotheboronandproducestheholes,becomepositive.N-typeisoneputintothephosphoroustobecomenegativeandproduceselectronics.Becauseofdifferentintensity,theywouldspreadfromhightolowandproduceP-Nregion.Whenaddforwardvoltage,theE-fieldwouldbecutdownandseemsthatresistorreducedotherwisewouldbewider.
(同理可得BJT,并且画他们的特性曲线等)
BJT’application:
commoncollect,emission,basic.
16.ElectronicsPower:
itistechniquewhichcouldtransferandcontrolthepowerenergybyelectronicsdevice.
1)electronicsdevice:
uncontrollable(diode),halfcontrollable(thyristor),fullcontrollable(IGBT)
其原理和工作状态,工作特性等
2)transfer:
rectify,invertionandothertransfer.
RectifyingisaconvertfromACtoDC.InvertionisaconvertfromDCtoAC.
举例画图:
单相半波整流,单相全桥整流,VSIandCSI
Other:
AC-AC,DC-DC.
举例:
Boostchopper,buckchopper.
3)control:
PWM(phasewidthmodulation)
17.Motormachine:
Whatismotor,motor’stype,principle,instrument,operation,characteristicandsoon.
Transistor:
adevicethatchangesACelectricenergyatonevoltageleverintoanotherleverthroughtheactionofamagneticfield.
1)instrument:
itisconsistoftwoormorecoilsofwirewrappedaroundacommonferromagneticcore,theyconnectedbymagneticflux.
Becausethefluxissame,sotheEMforceisproportiontothenumbersofwinding.
2)Principle:
whenfluxlinkagevaryinginanycoils,itproducesEMforce.
3)operationcharacteristic:
noloadandloadoperation
Noload:
equivalentcircuit,impedance,
Becauseeddycurrentlosseshysteresislossandsoon,weregardedtheironlossasequivalentresistorRmtostandfortheheating,Xmisthemainfluxthroughtheironwhichgeneratesthereactance.
U2=E1-I2(R2+jX2)=E1-I2E2
DCmachine:
electricalmotorandgenerator.Itcanrealizetheconversionbetweendirectenergyandmachineenergy.
1)instrument:
Stator:
mainpole(producestheair-gapfield),commutatingpole(improvecommunicationtoreducespark),crush(inletandelicitDC,DV),machinebase,coverandsoon.
Rotator:
armature(produceelectromagnetictorque),commutator,rotateaxialandsoon.
2)principle:
DConthearmaturewindingcreateamagneticfieldtothestator.ItistheinteractionofthesetwomagneticfieldsthatleadstorotationofDCmachine.
Asgenerator:
Whenoriginalmotordrivearmaturecoilsrotatebetweenthemainpole.Theycutthemagnetic-curvesandproduceelectromotiveforce.Throughthecommutatorreverse,leadDCtoloads.
3)characteristic:
Ithasacommutator,soitismorecomplexininstrumentcomparedwithalternativemotor.
Originalmotor:
oilenergydriveittotherotator;
Commutator:
infirst,itconvertstheDCtoAC,inarmaturewinding,keepthedirectsamewithtorque.
Insecond,itconvertstheinductiveemforcetoDCforce.
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