Yog li, qhov kev siv tshuab hluav taws xob (EMC) kev ua haujlwm ntawm cov khoom siv kho tsheb hauv tsheb tau txais ntau dua thiab ntau dua, thiab nws yog qhov yuav tsum tau ua tam sim no kom siv cov tshuab hluav taws xob txhim kho cov tshuab hluav taws xob rau cov khoom siv kho tsheb. Automotive lub tshuab hluav taws xob muaj cov hlua hluav taws xob tau faib rau hauv tag nrho cov tsheb ib puag ncig thiab yog qhov tseem ceeb ntawm kev cuam tshuam rau hluav taws xob hauv lub tsheb, thiab lawv feem ntau raug rau kev cuam tshuam hluav taws xob. Yog li no, yuav ua li cas rau electromagnetic cuam tshuam ntawm lub tsheb high-voltage thaiv kab hluav taws xob yog qhov tseem ceeb heev.
EMC yog dab tsi?
EMC yog luv rau ElectroMagnetic Compatibility. Electromagnetic compatibility yog ib qho kev kawm uas kawm txog kev sib koom ua ke ntawm ntau yam khoom siv hluav taws xob (suav nrog cov kab mob hauv qhov kev paub dav) nyob rau hauv cov xwm txheej ntawm qhov chaw tsis tshua muaj sijhawm, sijhawm, thiab cov khoom siv spectrum tsis ua rau muaj kev cuam tshuam. Feem ntau hais lus, peb qhov kev cia siab rau EMC yog txo cov kev cuam tshuam rau lwm cov khoom siv hluav taws xob, thaum muaj peev xwm tiv thaiv qhov cuam tshuam ntawm sab nraud cuam tshuam sab nraud.
Yooj yim muab tso, EMC suav nrog ob qho tseem ceeb: electromagnetic cuam tshuam thiab electromagnetic raug
EMI: Electro Magnetic cuam tshuam (Electro sib nqus cuam tshuam). Kev ntsuas hluav taws xob ntawm lub tshuab hluav taws xob yog ntsuas ntsuas qhov loj ntawm lub teeb liab ntawm lub tshuab hluav taws xob hluav taws xob tau tsim thiab tso tawm los ntawm lub cuab yeej ua haujlwm tsis zoo los cuam tshuam lub zog ntawm kev cuam tshuam rau cov khoom siv hluav taws xob puag ncig. EMI yog nquag, uas yog, cuam tshuam rau lub ntiaj teb sab nraud. Kev cuam tshuam hluav taws xob hluav taws xob feem ntau suav nrog kev faib hluav taws xob thiab ua emission.
EMS: Electro Magnetic Rho Tawm Tau Zoo (Electro Sib Nqus Me Nyuam). Kev ntsuas hluav taws xob raug ntsuas yog ntsuas ntsuas qhov cuam tshuam los tiv thaiv kev cuam tshuam cov peev xwm ntawm cov khoom siv hauv qab ntsuas rau electromagnetic cuam tshuam. EMS yog qhov ua siab dhau, uas yog, nws tiv taus kev cuam tshuam sab nraud.
Lub tshuab hluav taws xob sib xyaw ntawm qhov chaw yog lub hauv paus thiab qhov yuav tsum tau ua ua ntej ntawm qhov hluav taws xob sib xyaw ntawm txhua lub tsheb. Cov seem siv nyob rau hauv lub zog tshiab lub tsheb yuav tsum tsis tsuas yog ua raws li cov khoom siv hluav taws xob sib txawv ntawm cov khoom, tab sis kuj thaum muaj teeb meem nrog lub tshuab hluav taws xob ntawm lub tsheb tag nrho, cov khoom xa khoom tseem yuav tsum txhawb thiab nqa cov kev txhim kho yam tsis raug. Cov.
Kev tshawb xav thiab kev coj ua pov thawj pom tias txhua qhov hluav taws xob cuam tshuam yuav tsum tau ua raws li peb yam: qhov chaw ntawm kev cuam tshuam, txoj hauv kev cuam tshuam kev cuam tshuam, thiab cov khoom siv nkag siab.
Nyob rau hauv qhov kev cuam tshuam ntawm tag nrho cov tsheb, thawj zaug xyuas kom meej tias EMC kev ua haujlwm ntawm cov ntu ua tau raws cov qauv kev xav tau. Kev ua kom pom tseeb ntawm kev tsav tsheb-qib thaiv cov qauv tsim rau cov zog hluav taws xob tshiab yuav tsum yog txheej txheem ntawm cov tshuab hluav taws xob siab, tiv thaiv kev tsim qauv thiab tiv thaiv kev cuam tshuam ntawm CAN kev sib txuas lus network. Yog li ntawd, peb yuav tsum ua qhov no txhawm rau txhim kho EMC' s kev ua haujlwm:
Txo qhov kev siv tsawg ntawm kev cuam tshuam
Yog txhawm rau txhim kho qhov cuam tshuam los tiv thaiv kev muaj peev xwm ntau li ntau tau
Tsim nyog daim ntawv thov cov ntaub thaiv npog tsim
Ua ntej tshaj plaws, txoj hlua hluav taws xob high-voltage yuav tsum tau teeb tsa kom lub teeb hluav taws xob qis me me nyob ze rau cov teeb liab, thiab hluav taws xob hluav taws xob loj yog nyob ze rau lub nra. Cais lub voj voog uas tsis muaj zog thiab hluav taws xob hluav taws xob ntau li ntau tau kom txo qis induction cuam thiab hluav taws xob cuam tshuam los ntawm kev siv hlua hlau. , Txhim kho lub zoo ntawm lub xov hluav taws xob hluav taws xob ntawm lub voj voos ntawm tag nrho cov tsheb, thiab siv lub cev tsim lub thawv thaiv cov ntaub thaiv.
Qhov thib ob yog txo cov cheeb tsam ntawm txoj hlua khi tau txais kev cuam tshuam: txoj hlua khi hlua khi yuav tsum tsim nrog qhov ntev me tshaj plaws, qhov cuam tshuam me tshaj, thiab lub voj me tshaj. Nws yog qhov zoo tshaj plaws los siv txoj kev siv fais fab tuag nrog thaj chaw me me xws li kev sib tw ntawm tus khub. Ua kom qhov kev ncua deb ntawm lub cuab yeej mus rau qhov chaw cuam tshuam: Hauv cov xwm txheej uas cov txheej txheem ntawm cov khoom siv cuam tshuam tseem tsis hloov, hloov kho qhov chaw teeb tsa ntawm cov khoom tawg rhiab kom nce qhov kev deb mus rau qhov chaw cuam tshuam.
Ua kom cov hlua hlau txhaws: Rau cov hlua hlau ntev dua, txhawm rau txo kev sib tw thiab hluav taws xob cuam tshuam, kev lim yuav tsum ntxiv rau txoj hlua hlau. Nws yog qhov yooj yim dua rau lub qhov (socket) muaj lub nplhaib ferrite sib nqus haum.
Txhim kho txoj hauv av ntawm cov khoom siv: cov kev npaj zoo rau hauv av thiab txhim kho kev sib txuas ntawm cov xov hlau hauv av tuaj yeem txo qhov siab zaus. Kev pib av ntawm tsheb cov cuab yeej hluav taws xob feem ntau yog txuas nrog lub tsheb tsheb ze tshaj plaws thiab cov hlau thaiv kab thaiv thaiv txheej.
Tib lub sijhawm, thaiv cov xov hluav taws xob ntau ntawm cov xaim hluav taws xob thiab cov khoom txuas txuas ntxiv kuj yog ib qho kev lag luam thiab siv tau txoj hauv kev los txo cov hluav taws xob uas tsis tsim nyog. Cov lus ntawm cov qauv kev sim tau qhia tias: cov kab txuas hluav taws xob thaiv thiab cov txuas txuas tuaj yeem txo cov kev cuam tshuam uas tsis tsim nyog hauv ntau zaus ntawm 100 kHz txog 200 MHz. Tam sim no, txhua lub tsheb siv hauv tsev siv cov kab hluav taws xob tiv thaiv kab hluav taws xob, thiab cov tsheb txawv teb chaws tseem siv cov viav vias tiv thaiv rau cov kab hluav taws xob sab nraud kom tsis txhob muaj kev tiv thaiv kev tiv thaiv.
Txhawm rau kom tsis txhob muaj hluav taws xob cuam tshuam thaum lub tshuab hluav taws xob high-voltage hlua hluav taws xob xa mus rau cov khoom siv hluav taws xob muaj zog, uas yuav ua rau muaj kev pheej hmoo ntawm hluav taws xob cuam tshuam los ntawm cov hluav taws xob tsis tshua muaj hluav taws xob mus rau lub zog hluav taws xob thiab cov teeb liab kis ntawm chav tswj, qhov hluav taws xob xov hluav taws xob loj. thiab txoj hlua hluav taws xob tsis tshua muaj hluav taws xob feem ntau yog tsim los cais, thiab qhov kev ncua deb yog lav txog li 200-300 hli.
Hauv qab no yog kev qhia ntawm ntau qhov kev daws teeb meem cable-rau-EMC
Qhov Xaiv 1: Siv cov braided shielded cable
Cov kev pab them nqi yog loj, uas yog qhov zoo rau qhov pheej loj;
Kev kub siab ua ke (GG gt; 1M) kev ua tau zoo dua;
Qhov Xaiv 2: Cable tsho khiab braided net
Thick sib npaug sib tshooj qhov chaw yog qhov zoo rau qhov tsawg zaus
Tsawg zaus band (GG lt; 200K) muaj qhov ua tau zoo dua.
Qhov Xaiv 3: Txoj hlua khi lub raj aluminium raj
Qhov ua tau zoo EMI ntawm tag nrho cov qhab ntau dua yog qhov zoo dua.
Qhov Xaiv 4: Qhov kev sib xyaw ua ke ntawm txhuas raj thiab cov kav hlau txuas
Ua ke cov nta ntawm Daim Phiaj Xwm 2 thiab Phiaj Xwm 3 muaj qhov sib txuam tau zoo thaum muab cov xov hluav taws xob tag nrho.
Daim duab hauv qab no qhia qhov tshwm sim thiab parameter nkhaus ntawm txoj kev tiv thaiv. Nws tuaj yeem pom tias cov aluminium chromium alloy raj yog ib txoj kev tiv thaiv zoo tshaj:
