1. tiv thaiv kev cuam tshuam thiab electromagnetic compatibility
1. Txhais kev cuam tshuam
Kev cuam tshuam yog hais txog kev cuam tshuam los ntawm cov suab nrov sab nraud thiab tsis muaj hluav taws xob tsis zoo hauv kev txais cov kua siv lead ua kua module.Nws kuj tseem tuaj yeem txhais tau tias yog qhov cuam tshuam los ntawm lub zog tsis xav tau, suav nrog kev cuam tshuam ntawm lwm cov cim, spurious emission, suab nrov, thiab lwm yam.
2.Electromagnetic compatibility thiab tiv thaiv kev cuam tshuam
Ntawm qhov tod tes, cov khoom siv hluav taws xob thiab hluav taws xob hluav taws xob los ntawm kev cuam tshuam sab nraud, ntawm qhov tod tes, nws yuav tsim kev cuam tshuam rau lub ntiaj teb sab nraud.Yog li ntawd, lub teeb liab hluav taws xob yog ib qho teeb meem tseem ceeb rau lub voj voog, thiab lwm yam circuits yuav ua suab nrov.
Cov cuab yeej tiv thaiv kev cuam tshuam ntawm hluav taws xob hluav taws xob yog qhov tseem ceeb ntawm EMC.EMC stands rau electro MAG ib yam dab tsi netic Compatibility, uas txhais li electromagnetic Compatibility.Electromagnetic compatibility yog ib qho kev ua haujlwm ntawm cov khoom siv hluav taws xob uas ua lawv txoj haujlwm hauv ib puag ncig electromagnetic tsis ua rau muaj kev cuam tshuam tsis zoo.
Electromagnetic compatibility muaj peb lub ntsiab lus: 1. Cov khoom siv hluav taws xob yuav tsum muaj peev xwm tiv thaiv kev cuam tshuam sab nraud ntawm electromagnetic.2. Kev cuam tshuam ntawm electromagnetic cuam tshuam los ntawm cov cuab yeej siv nws tus kheej yuav tsum tsawg dua li qhov tau teev tseg thiab yuav tsum tsis txhob cuam tshuam rau kev ua haujlwm ntawm lwm cov khoom siv hluav taws xob hauv tib qhov chaw electromagnetic;3. Cov khoom siv hluav taws xob sib raug zoo ntawm cov khoom siv hluav taws xob yog ntsuas tau.
Peb lub ntsiab ntawm kev tiv thaiv kev cuam tshuam
Muaj peb lub ntsiab lus los tsim kev cuam tshuam ntawm electromagnetic: qhov chaw ntawm electromagnetic cuam tshuam, coupling txoj kev ntawm electromagnetic cuam tshuam, rhiab khoom siv thiab Circuit Court.
1. Electromagnetic cuam tshuam qhov chaw muaj xws li tej yam ntuj tso kev puas tsuaj thiab qhov chaw uas neeg tsim.
2. Txoj kev sib txuas ntawm electromagnetic cuam tshuam muaj xws li conduction thiab hluav taws xob.
(1) conduction coupling: Nws yog qhov cuam tshuam tshwm sim uas lub suab nrov yog ua thiab txuas los ntawm qhov chaw cuam tshuam rau cov khoom siv rhiab thiab Circuit Court los ntawm kev sib txuas ntawm qhov chaw cuam tshuam thiab cov khoom siv rhiab.Cov khoom siv hluav taws xob sib txuas muaj xws li cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, cov khoom siv impedance, av dav hlau, resistors, capacitors, inductors thiab inductors, thiab lwm yam.
(2) hluav taws xob coupling: Lub teeb liab cuam tshuam propagates los ntawm nruab nrab hauv daim ntawv ntawm hluav taws xob electromagnetic yoj, thiab lub zog cuam tshuam yog tawm hauv qhov chaw ib puag ncig raws li txoj cai ntawm electromagnetic propagation.Muaj peb hom radiative coupling: 1. Cov electromagnetic yoj emitted los ntawm kev cuam tshuam qhov chaw kav hlau txais xov yog raug txais los ntawm lub kav hlau txais xov ntawm cov khoom rhiab.2.Qhov chaw electromagnetic teb yog inductively txuas los ntawm ib tug neeg xyuas pib, uas yog hu ua field-to-line coupling.3.Lub siab zaus teeb liab induction ntau lawm coupling ntawm ob parallel conductors yog hu ua kab-rau-kab coupling.
4. Cov tshuaj tiv thaiv kev cuam tshuam peb yam
piav qhia txog ib lub voj voog los ntawm qib kev cuam tshuam hauv N, ces n tuaj yeem siv los txhais cov qauv NG * C / I: G raws li qhov siv ntawm lub suab nrov;C yog qhov txuas txuas uas lub suab nrov xa mus rau qhov chaw cuam tshuam los ntawm qee txoj kev;Kuv yog qhov kev cuam tshuam kev cuam tshuam ntawm kev cuam tshuam ntawm Circuit Court.
G, C, Kuv txhais tau hais tias tiv thaiv kev cuam tshuam peb yam.Nws tuaj yeem pom tias qhov kev cuam tshuam hauv Circuit Court yog proportional rau qhov siv g ntawm lub suab nrov, proportional rau qhov sib txuas C, thiab inversely proportional rau anti-interference kev ua tau zoo I ntawm qhov cuam tshuam Circuit Court.Txhawm rau ua kom me me, koj tuaj yeem ua cov hauv qab no:
1. G kom me me, uas yog, lub hom phiaj ntawm kev cuam tshuam qhov kev siv zog hauv qhov chaw kom txo qis me me.
2. C yuav tsum me me, lub suab nrov nyob rau hauv txoj kev kis tau tus mob kom muab ib tug zoo attenuation.
3. Kuv nce ntxiv, nyob rau hauv qhov chaw cuam tshuam los tiv thaiv kev cuam tshuam, kom muaj peev xwm tiv thaiv kev cuam tshuam ntawm Circuit Court, lossis suab nrov hauv qhov chaw cuam tshuam.
Kev tsim qauv ntawm kev cuam tshuam los ntawm kev cuam tshuam (EMC) yuav tsum pib los ntawm peb yam los tswj kev cuam tshuam thiab ncav cuag EMC tus qauv, uas yog, txwv tsis pub lub hauv paus ntawm kev cuam tshuam, txiav tawm txoj kev sib txuas hluav taws xob thiab txhim kho kev tiv thaiv ntawm cov khoom rhiab heev.
3. Lub hauv paus ntsiab lus ntawm kev tshawb nrhiav cov suab nrov,
Txawm hais tias qhov teeb meem nyuaj npaum li cas, yuav tsum xub kawm txoj hauv kev ntawm kev tawm suab nrov ntawm lub suab nrov.Thawj qhov xwm txheej yog nrhiav qhov cuam tshuam, qhov thib ob yog txhawm rau txheeb xyuas qhov muaj peev xwm ntawm kev tawm suab nrov thiab siv cov kev ntsuas sib xws.
Qee qhov chaw cuam tshuam tau pom tseeb, xws li xob laim, xov tooj cua kis tau tus mob, daim phiaj hluav taws xob ntawm kev ua haujlwm ntawm cov khoom siv hluav taws xob siab.Qhov kev cuam tshuam no tsis tuaj yeem ua haujlwm ntawm qhov chaw cuam tshuam.
Cov hluav taws xob hluav taws xob yog qhov nyuaj dua los nrhiav qhov chaw cuam tshuam.Nrhiav qhov chaw cuam tshuam yog: tam sim no, voltage hloov pauv loj heev yog qhov chaw ntawm hluav taws xob cuam tshuam qhov chaw.Hauv kev ua lej, thaj chaw loj ntawm DI / dt Thiab du / DT yog qhov chaw cuam tshuam.
4. Lub hauv paus ntsiab lus los nrhiav txoj hauv kev ntawm kev nthuav tawm suab nrov
1. Lub hauv paus ntsiab lus ntawm inductive coupling suab nrov feem ntau yog cov ntaub ntawv ntawm kev hloov pauv tam sim no lossis loj tam sim no.
2. Voltage variations yog loj los yog siab nyob rau hauv cov ntaub ntawv ntawm high-voltage ua hauj lwm, feem ntau yog lub ntsiab ntawm capacitive coupling.
3. Lub suab nrov ntawm qhov sib txuas impedance kuj yog tshwm sim los ntawm qhov hluav taws xob poob ntawm cov impedance feem ntau vim qhov kev hloov pauv loj heev hauv qhov tam sim no.
4. Rau qhov kev hloov pauv loj heev hauv qhov tam sim no, nws cov khoom siv inductance tshwm sim los ntawm kev cuam tshuam loj heev.Yog tias qhov tam sim no tsis hloov,.Txawm hais tias lawv tus nqi tiag tiag yog qhov loj heev, lawv tsis ua rau lub suab nrov inductive lossis capacitive coupling thiab tsuas yog ntxiv ib qho kev poob qis mus rau qhov impedance.
Peb lub ntsiab ntawm kev tiv thaiv kev cuam tshuam
Post lub sij hawm: Jun-09-2020
