Fais fab mov electromagnetic compatibility technical term
Electromagnetic compatibility yog ib qho kev qhuab qhia uas muaj kev qhuab qhia dav dav. Raws li kev siv thev naus laus zis thev naus laus zis, nws tau ua raws li kev xav tau yooj yim ntawm hluav taws xob thiab xov tooj cua thev naus laus zis, thiab koom nrog ntau txoj haujlwm tshiab, xws li microwave technology, microelectronics technology, computer technology, kev sib txuas lus thiab network technology, thiab cov ntaub ntawv tshiab. Electromagnetic compatibility technology muaj ntau yam kev siv, thiab yuav luag txhua qhov kev lag luam niaj hnub no, xws li hluav taws xob, kev sib txuas lus, kev thauj mus los, aerospace, tub rog kev lag luam, khoos phis tawj thiab kev kho mob, yuav tsum daws cov teeb meem electromagnetic compatibility. Cov ntsiab lus kub ntawm nws cov kev tshawb fawb feem ntau suav nrog: cov yam ntxwv ntawm electromagnetic cuam tshuam qhov chaw thiab lawv cov yam ntxwv kis tau tus mob, muaj teeb meem cuam tshuam ntawm electromagnetic cuam tshuam, kev siv tshuab hluav taws xob cuam tshuam, kev siv thiab kev tswj hwm ntawm electromagnetic spectrum, cov qauv thiab cov kev qhia tshwj xeeb ntawm electromagnetic compatibility, ntsuas thiab ntsuas tshuab, electromagnetic to thiab electrostatic paug, thiab lwm yam.
Lub npe Askiv ntawm electromagnetic compatibility yog Electromagnetic Compatibility, lossis EMC luv luv. Lub npe hu ua electromagnetic compatibility yog hais txog kev sib koom ua ke hauv lub xeev uas cov khoom siv (subsystems, systems) tuaj yeem ua lawv cov haujlwm ua ke hauv ib puag ncig electromagnetic. Muaj ob lub ntsiab lus ntawm no, uas yog, hluav taws xob hluav taws xob tsim tawm thaum lub sijhawm ua haujlwm yuav tsum raug txwv rau qee qib, thiab nws yuav tsum muaj peev xwm tiv thaiv kev cuam tshuam. Qhov no yog qhov teeb meem compatibility uas yuav tsum tau daws nyob rau hauv txoj kev loj hlob ntawm cov khoom. Qhov ntau zaus koom nrog hauv tshuab electromagnetic compatibility yog dav li 0 GHz txog 400 GHz. Ntxiv nrog rau cov khoom siv ib txwm siv, cov khoom tshawb fawb kuj tseem suav nrog qib nti, mus rau qhov chaw electromagnetic ntawm ntau lub nkoj, qhov chaw shuttles, missiles intercontinental thiab txawm tias tag nrho lub ntiaj teb.
Peb lub ntsiab lus ntawm electromagnetic compatibility yog qhov cuam tshuam (qhov chaw cuam tshuam), coupling txoj kev thiab lub cev rhiab heev. Txiav tawm ib qho ntawm cov khoom saum toj no tuaj yeem daws qhov teeb meem electromagnetic compatibility. Feem ntau siv txoj kev los daws cov electromagnetic compatibility mas muaj xws li shielding, grounding thiab filtering.
2 Electromagnetic Compatibility Technical Terms
(1) Electromagnetic Compatibility
Electromagnetic compatibility yog hais txog lub peev xwm ntawm lub cuab yeej lossis lub cev ua haujlwm ib txwm nyob hauv nws qhov chaw electromagnetic yam tsis ua rau muaj kev cuam tshuam tsis zoo ntawm electromagnetic cuam tshuam rau txhua yam hauv ib puag ncig.
(2) Electromagnetic cuam tshuam
Electromagnetic cuam tshuam yog hais txog tej yam tshwm sim ntawm electromagnetic uas yuav ua rau kev ua haujlwm ntawm cov khoom siv, cov khoom siv lossis cov tshuab lossis ua rau muaj kev puas tsuaj rau cov khoom nyob lossis cov khoom tsis muaj sia. Electromagnetic cuam tshuam tuaj yeem ua rau degradation ntawm cov khoom siv, kev sib kis channel lossis kev ua haujlwm ntawm lub cev. Nws cov ntsiab lus tseem ceeb suav nrog kev cuam tshuam ntawm ntuj thiab tib neeg tsim, kev sib txuas los ntawm pej xeem hauv av impedance / sab hauv tsis kam, electromagnetic cuam tshuam thiab hluav taws xob cuam tshuam ua raws li txoj kab hluav taws xob, thiab lwm yam. Txoj kev cuam tshuam rau lub tshuab hluav taws xob yog: los ntawm cov khoom siv hluav taws xob, los ntawm kab teeb liab lossis tswj cable, kev nkag mus rau hauv teb, thiab ncaj qha los ntawm tus kav hlau txais xov; los ntawm cable coupling, conduction cuam tshuam los ntawm lwm yam khoom siv; Internal teb coupling ntawm hluav taws xob system; hluav taws xob cuam tshuam los ntawm lwm yam khoom siv; Sab nraud coupling ntawm cov khoom siv hluav taws xob rau sab hauv; broadband transmitter kav hlau txais xov systems; sab nraud ib puag ncig teb, thiab lwm yam.
(3) Electromagnetic ib puag ncig
Ib puag ncig electromagnetic yog lub sijhawm sib txawv ntawm electromagnetic phenomenon uas pom tau tias tsis qhia cov ntaub ntawv, thiab uas tej zaum yuav superimpose los yog ua ke nrog cov cim tseem ceeb.
(4) Electromagnetic tawg
Electromagnetic hluav taws xob yog qhov tshwm sim uas cov hluav taws xob hluav taws xob tau tawm ntawm qhov chaw mus rau qhov chaw. Lub ntsiab lus ntawm lo lus "electromagnetic hluav taws xob" tej zaum yuav raug ncua kom muaj xws li qhov tshwm sim ntawm electromagnetic induction. RFI / EMI tuaj yeem tawg los ntawm qhov qhib, qhov cua, qhov nkag thiab tawm, cables, ntsuas qhov, qhov rooj, qhov rooj npog, tub rau khoom thiab cov vaj huam sib luag ntawm txhua yam khoom siv, nrog rau qhov tsis zoo ntawm qhov sib txuas ntawm lub casing. RFI / EMI tseem tuaj yeem raug hluav taws xob los ntawm cov xov hlau thiab cov cables nkag mus rau cov khoom siv rhiab, thiab txhua lub tshuab hluav taws xob zoo ntawm lub zog hluav taws xob kuj tuaj yeem ua tus txais tau zoo.
(5) Pulse
Ib qho impulse yog lub cev muaj nuj nqis uas tau hloov pauv sai sai hauv lub sijhawm luv luv thiab tom qab ntawd sai sai rov qab los rau nws tus nqi pib.
(6) Kev cuam tshuam hom kev cuam tshuam thiab kev sib txawv hom cuam tshuam
Muaj ob hom kev cuam tshuam ntawm txoj kab hluav taws xob: hom kev cuam tshuam thiab qhov sib txawv hom cuam tshuam. Hom kev cuam tshuam tshwm sim nyob nruab nrab ntawm txhua qhov av txheeb ze ntawm lub zog hluav taws xob lossis nruab nrab ntawm cov xov hlau thiab hauv av. Hom kev cuam tshuam feem ntau kuj qee zaum hu ua longitudinal mode interference, asymmetrical cuam tshuam los yog hauv av cuam tshuam. Qhov no yog qhov cuam tshuam ntawm tus neeg nqa khoom tam sim no thiab lub ntiaj teb. Txawv hom kev cuam tshuam muaj nyob nruab nrab ntawm cov kab theem thiab cov kab nruab nrab ntawm cov khoom siv hluav taws xob thiab nruab nrab ntawm theem kab thiab theem kab. Txawv hom kev cuam tshuam kuj tseem hu ua kev cuam tshuam ib txwm, hom kev cuam tshuam los yog kev cuam tshuam sib luag. Qhov no yog kev cuam tshuam ntawm cov neeg nqa khoom tam sim no. Hom kev cuam tshuam feem ntau qhia tau hais tias kev cuam tshuam yog txuas rau hauv Circuit Court los ntawm hluav taws xob lossis crosstalk, thaum sib txawv hom cuam tshuam qhia tau hais tias qhov cuam tshuam los ntawm tib lub zog hluav taws xob. Feem ntau ob hom kev cuam tshuam no muaj nyob rau tib lub sijhawm. Vim qhov tsis sib xws ntawm kab impedance, ob hom kev cuam tshuam yuav hloov mus rau ib leeg thaum sib kis, yog li qhov xwm txheej nyuaj heev. Tom qab qhov kev cuam tshuam raug xa mus rau qhov ntev, qhov attenuation ntawm qhov sib txawv hom kev tivthaiv yog ntau dua li ntawm hom hom, vim hais tias cov kab-rau-kab impedance txawv ntawm kab-rau-hauv av impedance. Rau tib lub laj thawj, kev cuam tshuam ntau hom kuj tseem yuav tawm mus rau qhov chaw nyob sib ze thaum lub sijhawm sib kis, tab sis hom sib txawv yuav tsis, yog li kev cuam tshuam hom feem ntau yuav ua rau muaj kev cuam tshuam electromagnetic dua li hom sib txawv. Cov kev cuam tshuam sib txawv yuav tsum muaj kev cuam tshuam kev cuam tshuam sib txawv kom ua tau zoo. Ib txoj hauv kev yooj yim los txiav txim siab txoj kev cuam tshuam yog siv qhov ntsuas tam sim no. Kev sojntsuam tam sim no loops ib ncig ntawm txhua lub xov hlau ib tus zuj zus kom tau txais qhov inductance ntawm ib lub xaim, thiab tom qab ntawd loops ib ncig ntawm ob lub xov hlau (ib qho hauv av) txhawm rau txheeb xyuas qhov inductance. Yog tias tus nqi induction nce, qhov cuam tshuam tam sim no hauv kab yog hom hom; txwv tsis pub, nws yog hom sib txawv.
(7) Kev tiv thaiv qib thiab qib rhiab heev
Kev tiv thaiv qib yog hais txog qib siab tshaj plaws thaum muaj kev cuam tshuam ntawm electromagnetic cuam tshuam rau qee yam khoom siv, khoom siv lossis lub cev thiab nws tseem tuaj yeem ua haujlwm ib txwm thiab tswj cov qib kev ua tau zoo. Ntawd yog, cov cuab yeej, khoom siv, lossis lub kaw lus yuav txo qis kev ua haujlwm thaum qib no dhau mus. Qhov rhiab heev, ntawm qhov tod tes, yog theem ntawm kev ua haujlwm degradation yog pib tshwm sim. Yog li ntawd, rau qee yam khoom siv, khoom siv lossis kev kaw lus, qib kev tiv thaiv thiab qib susceptibility yog tib tus nqi.
(8) Kev tiv thaiv kab mob
Kev tiv thaiv kab mob yog hais txog kev cuam tshuam ntawm qhov txwv tus nqi ntawm kev tiv thaiv qib ntawm cov khoom siv, cov khoom siv lossis cov kab ke thiab cov qib electromagnetic compatibility.
