Xov xwm

Hom kev ua haujlwm tshwj xeeb, tom qab kev sim, lub txee rov qab los rau hauv chav tsev kub los tiv thaiv cov khoom hauv kev sim

Scalable network video soj ntsuam, synchronized nrog cov ntaub ntawv kuaj

Tswj qhov system txij nkawm tsis siv neeg ceeb toom thiab txhaum rooj plaub software tsim muaj nuj nqi

Xim tshuaj ntsuam 32-ntsis tswj qhov system E Ethernet E tswj, UCB cov ntaub ntawv nkag tau ua haujlwm

Tsim tshwj xeeb tsim kom qhuav huab cua huv los tiv thaiv cov khoom nyob rau hauv kev sim los ntawm kev kub ceev hloov pauv vim qhov condensation nto

Kev lag luam tsis tshua muaj av noo ntau 20 ℃ / 10% tswj muaj peev xwm

Nruab nrog kev siv dej tsis siv neeg, dej ntshiab pom qhov system thiab dej tsis txaus ceeb toom ua haujlwm

Ua raws li kev soj ntsuam kev ntxhov siab ntawm cov khoom siv hluav taws xob, cov txheej txheem tsis muaj txhuas, MIL-STD-2164, MIL-344A-4-16, MIL-2164A-19, NABMAT-9492, GJB-1032-90, GJB/Z34-5.1. 6, IPC -9701 ... thiab lwm yam kev xeem yuav tsum tau ua. Lus Cim: Qhov ntsuas kub thiab cov av noo sib npaug ntawm qhov ntsuas qhov ntsuas qhov ntsuas qhov deb ntawm lub thawv sab hauv thiab txhua sab 1/10 (GB5170.18-87)

Hauv kev ua haujlwm ntawm cov khoom siv hluav taws xob, ntxiv rau kev ntxhov siab xws li hluav taws xob thiab hluav taws xob tam sim no, kev ntxhov siab ib puag ncig kuj suav nrog kev kub siab thiab kub lub voj voog, kev vibration thiab poob siab, av noo thiab ntsev tsuag, electromagnetic teb cuam tshuam, thiab lwm yam. kev txiav txim ntawm qhov saum toj no-hais txog ib puag ncig kev ntxhov siab, cov khoom yuav muaj kev ua haujlwm degradation, parameter drift, khoom corrosion, thiab lwm yam, lossis txawm tias tsis ua haujlwm.

Tom qab cov khoom siv hluav taws xob raug tsim, los ntawm kev tshuaj xyuas, cov khoom muag, kev thauj mus los rau kev siv, thiab kev saib xyuas, lawv txhua tus cuam tshuam los ntawm ib puag ncig kev ntxhov siab, ua rau lub cev, tshuaj lom neeg, khoom siv thiab hluav taws xob ntawm cov khoom hloov mus tas li. Cov txheej txheem kev hloov pauv tuaj yeem qeeb lossis Transient, nws nyob ntawm hom kev ntxhov siab ib puag ncig thiab qhov loj ntawm kev ntxhov siab.

Qhov ntsuas kub tsis tu ncua yog hais txog qhov ntsuas kub ntawm cov khoom siv hluav taws xob thaum nws ua haujlwm lossis khaws cia rau hauv ib puag ncig kub. Thaum cov lus teb kub siab tshaj qhov txwv uas cov khoom tuaj yeem tiv taus, cov khoom tivthaiv yuav tsis tuaj yeem ua haujlwm nyob rau hauv qhov kev ntsuas hluav taws xob uas tau teev tseg, uas yuav ua rau cov khoom muag muag thiab deform lossis txo qhov kev ua haujlwm ntawm rwb thaiv tsev, lossis txawm tias kub hnyiab. rau overheating. Rau cov khoom, cov khoom raug raug kub siab rau lub sijhawm no. Kev ntxhov siab, kub-kub dhau-kev ntxhov siab tuaj yeem ua rau cov khoom tsis ua haujlwm hauv lub sijhawm luv luv ntawm kev ua haujlwm; thaum cov lus teb kub tsis tshaj qhov kev khiav hauj lwm qhov kub thiab txias ntau yam ntawm cov khoom, cov nyhuv ntawm qhov kub thiab txias nyob rau hauv lub xeev yog manifested nyob rau hauv cov nyhuv ntawm kev ua hauj lwm mus sij hawm ntev. Cov nyhuv ntawm lub sijhawm ua rau cov khoom siv maj mam muaj hnub nyoog, thiab cov khoom siv hluav taws xob tsis zoo yog drifting lossis tsis zoo, uas thaum kawg ua rau cov khoom tsis ua haujlwm. Rau cov khoom, qhov kub thiab txias ntawm lub sij hawm no yog lub sij hawm ntev kub ntxhov siab. Qhov ntsuas kub tsis tu ncua uas tau ntsib los ntawm cov khoom siv hluav taws xob los ntawm qhov ntsuas kub ntawm cov khoom thiab cov cua sov tsim los ntawm nws tus kheej lub zog noj. Piv txwv li, vim qhov tsis ua hauj lwm ntawm lub tshav kub dissipation system thiab high-temperature heat flow leakage ntawm cov cuab yeej, qhov kub ntawm lub tivthaiv yuav tshaj qhov siab tshaj ntawm qhov tso cai kub. Cov tivthaiv raug rau qhov kub thiab txias. Kev ntxhov siab: Nyob rau hauv lub sijhawm ntev ua haujlwm ruaj khov ntawm qhov chaw cia khoom kub, cov khoom lag luam muaj kev ntxhov siab rau lub sijhawm ntev. Kev kub siab tiv thaiv kev txwv tsis pub muaj peev xwm ntawm cov khoom siv hluav taws xob tuaj yeem txiav txim siab los ntawm kev ntsuas qhov kub thiab txias, thiab kev pabcuam lub neej ntawm cov khoom siv hluav taws xob nyob rau hauv lub sijhawm ntev tuaj yeem ntsuas los ntawm kev ntsuas lub neej nyob ruaj khov (siab kub acceleration).

Hloov cov kev ntxhov siab kub txhais tau hais tias thaum cov khoom siv hluav taws xob hloov pauv hauv lub xeev kub, vim qhov sib txawv ntawm cov thermal expansion coefficients ntawm cov khoom siv ua haujlwm, cov khoom siv cuam tshuam tau raug thermal stress los ntawm qhov kub thiab txias. Thaum qhov kub hloov pauv loj heev, cov khoom tuaj yeem tawg sai sai thiab poob ntawm cov khoom siv. Lub sijhawm no, cov khoom raug hloov pauv ntawm qhov kub thiab txias overstress lossis kub poob siab; Thaum qhov kub hloov pauv qeeb qeeb, cov txiaj ntsig ntawm kev hloov pauv ntawm qhov kub thiab txias tau tshwm sim rau lub sijhawm ntev Cov khoom siv cuam tshuam txuas ntxiv ua rau cov thermal stress generated los ntawm qhov kub thiab txias, thiab micro-cracking puas yuav tshwm sim nyob rau hauv ib co micro cheeb tsam. Qhov kev puas tsuaj no maj mam accumulates, nws thiaj li ua rau cov khoom siv interface tawg lossis tawg poob. Nyob rau lub sijhawm no, cov khoom raug raug kub hnyiab mus ntev. Kev ntxhov siab tsis sib xws los yog qhov kub thiab txias kev ntxhov siab. Kev hloov pauv kub ntxhov siab uas cov khoom siv hluav taws xob ua rau muaj kev kub ntxhov los ntawm qhov kub thiab txias ntawm ib puag ncig uas cov khoom nyob thiab nws tus kheej hloov lub xeev. Piv txwv li, thaum tsiv los ntawm qhov chaw sov sab hauv tsev mus rau qhov txias sab nraum zoov, nyob rau hauv lub hnub ci hluav taws xob muaj zog, nag lossis daus hauv dej, qhov kub thiab txias hloov pauv hauv av mus rau qhov siab siab ntawm lub dav hlau, kev ua haujlwm tsis sib xws hauv qhov chaw txias, lub hnub nce thiab rov qab lub hnub nyob rau hauv qhov chaw Nyob rau hauv cov ntaub ntawv ntawm kev hloov, reflow soldering thiab rework ntawm microcircuit modules, cov khoom yog raug rau kub poob siab kev nyuaj siab; cov khoom siv yog tshwm sim los ntawm kev hloov pauv ntawm lub sijhawm huab cua huab cua, kev ua haujlwm tsis sib xws, kev hloov pauv ntawm kev ua haujlwm kub ntawm cov khoom siv nws tus kheej, thiab kev hloov pauv ntawm cov khoom siv sib txuas lus hu rau ntim. Nyob rau hauv cov ntaub ntawv ntawm fluctuations nyob rau hauv lub hwj chim noj, cov khoom yog raug rau kub cycling kev nyuaj siab. Kev ntsuas thermal poob siab tuaj yeem siv los ntsuas qhov tsis kam ntawm cov khoom siv hluav taws xob thaum raug hloov pauv hauv qhov kub thiab txias, thiab qhov ntsuas kub ntawm lub voj voog tuaj yeem siv los ntsuas qhov hloov pauv ntawm cov khoom siv hluav taws xob los ua haujlwm rau lub sijhawm ntev hauv kev hloov pauv kub thiab qis. .

2. Mechanical stress

Kev ntxhov siab ntawm cov khoom siv hluav taws xob muaj xws li peb hom kev ntxhov siab: mechanical vibration, mechanical shock, and constant acceleration (centrifugal force).

Mechanical vibration stress yog hais txog ib hom kev ntxhov siab uas tsim los ntawm cov khoom siv hluav taws xob reciprocating nyob ib ncig ntawm ib qho chaw sib npaug hauv qab kev ua ntawm ib puag ncig sab nraud. Mechanical vibration yog cais rau hauv kev vibration dawb, yuam kev vibration, thiab nws tus kheej zoo siab vibration raws li nws ua; Raws li txoj cai txav ntawm cov neeg kho tshuab kev co, muaj sinusoidal kev co thiab random vibration. Ob hom kev vibration no muaj qhov sib txawv ntawm kev puas tsuaj rau cov khoom, thaum tom kawg yog kev puas tsuaj. Loj dua, yog li feem ntau ntawm kev ntsuam xyuas kev vibration txais yuav random vibration test. Qhov cuam tshuam ntawm kev vibration ntawm cov khoom siv hluav taws xob muaj xws li cov khoom deformation, khoov, tawg, tawg, thiab lwm yam tshwm sim los ntawm kev co. Cov khoom siv hluav taws xob nyob rau hauv lub sij hawm ntev kev vibration kev nyuaj siab yuav ua rau cov khoom siv sib cuam tshuam kom tawg vim kev qaug zog thiab kev ua haujlwm tsis zoo; Yog hais tias nws tshwm sim Resonance ua rau over-stress cracking tsis ua hauj lwm, ua instant structural puas rau cov khoom hluav taws xob. Cov neeg kho tshuab kev vibration kev ntxhov siab ntawm cov khoom siv hluav taws xob los ntawm cov khoom siv hluav taws xob los ntawm cov khoom siv hluav taws xob ntawm qhov chaw ua haujlwm, xws li kev sib hloov, kev sib hloov, oscillation thiab lwm yam khoom siv thauj khoom ntawm lub dav hlau, tsheb, nkoj, dav hlau tsheb thiab cov khoom siv hauv av, tshwj xeeb tshaj yog thaum cov khoom thauj. Nyob rau hauv ib lub xeev tsis ua hauj lwm Thiab raws li lub tsheb-mounted los yog huab cua tivthaiv nyob rau hauv lub lag luam nyob rau hauv kev ua hauj lwm tej yam kev mob, nws yog inevitable los tiv thaiv mechanical vibration kev nyuaj siab. Mechanical vibration test (tshwj xeeb tshaj yog random vibration test) tuaj yeem siv los ntsuas qhov kev hloov pauv ntawm cov khoom siv hluav taws xob rau cov khoom siv hluav taws xob rov ua dua thaum lub sijhawm ua haujlwm.

Mechanical shock stress yog hais txog ib hom kev ntxhov siab uas tshwm sim los ntawm ib qho kev sib cuam tshuam ncaj qha ntawm cov khoom siv hluav taws xob thiab lwm yam khoom (lossis cov khoom siv) nyob rau hauv qhov kev txiav txim ntawm sab nraud ib puag ncig, uas ua rau muaj kev hloov pauv sai sai ntawm lub zog, kev hloov pauv, kev nrawm lossis nrawm ntawm lub zog. Cov khoom lag luam ntawm ib qho tam sim no Raws li qhov kev txiav txim ntawm kev cuam tshuam kev ntxhov siab, cov khoom tuaj yeem tso tawm thiab hloov pauv lub zog loj hauv lub sijhawm luv luv, ua rau muaj kev puas tsuaj loj rau cov khoom, xws li ua rau cov khoom siv hluav taws xob tsis zoo, qhib tam sim / luv luv, thiab tawg thiab tawg. ntawm cov khoom sib dhos pob, thiab lwm yam. Qhov sib txawv ntawm qhov kev puas tsuaj los ntawm kev ua haujlwm ntev ntawm kev co, kev puas tsuaj ntawm cov khoom siv hluav taws xob yog tshwm sim raws li cov concentrated tso tawm ntawm lub zog. Qhov loj ntawm qhov kev ntsuam xyuas kev poob siab yog qhov loj dua thiab lub sijhawm poob siab yog luv dua. Tus nqi siab tshaj plaws uas ua rau cov khoom puas tsuaj yog lub ntsiab mem tes. Lub sijhawm ntawm tsuas yog ob peb milliseconds mus rau kaum milliseconds, thiab kev co tom qab lub ntsiab mem tes decays sai. Qhov loj ntawm no mechanical shock stress yog txiav txim los ntawm lub ncov acceleration thiab lub sij hawm ntawm lub shock pulse. Qhov loj ntawm lub ncov acceleration qhia txog qhov loj ntawm qhov cuam tshuam quab yuam siv rau cov khoom, thiab qhov cuam tshuam ntawm lub sijhawm ntawm kev poob siab ntawm cov khoom yog cuam tshuam nrog lub ntuj zaus ntawm cov khoom. ntsig txog. Cov neeg kho tshuab kev ntxhov siab uas cov khoom siv hluav taws xob dais los ntawm kev hloov pauv loj hauv lub xeev ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob, xws li kev sib tsoo thaum muaj xwm ceev thiab kev cuam tshuam ntawm lub tsheb, airdrops thiab tee ntawm aircraft, artillery hluav taws, hluav taws xob tawg, nuclear tawg, tawg, thiab lwm yam kev cuam tshuam, kev quab yuam los yog kev txav tam sim ntawd tshwm sim los ntawm kev thauj khoom thiab kev thauj mus los, kev thauj mus los lossis kev ua haujlwm hauv teb kuj yuav ua rau cov khoom tiv thaiv kev cuam tshuam. Kev ntsuam xyuas kev poob siab tuaj yeem siv los ntsuas qhov kev hloov pauv ntawm cov khoom siv hluav taws xob (xws li cov qauv hauv Circuit Court) kom tsis txhob rov ua dua txhua yam kev poob siab thaum siv thiab kev thauj mus los.

Tsis tu ncua acceleration (centrifugal force) kev ntxhov siab yog hais txog ib yam ntawm lub zog centrifugal tsim los ntawm kev hloov pauv tas li ntawm kev txav ntawm cov cab kuj thaum cov khoom siv hluav taws xob ua haujlwm ntawm cov cab kuj txav mus los. Lub zog centrifugal yog lub zog virtual inertial, uas ua rau cov khoom tig tawm ntawm qhov chaw ntawm kev sib hloov. Lub zog centrifugal thiab lub zog centripetal yog sib npaug hauv qhov loj thiab rov qab rau hauv kev coj. Thaum lub zog centripetal tsim los ntawm qhov tshwm sim sab nraud quab yuam thiab coj mus rau qhov chaw ntawm lub voj voog ploj mus, lub rotating khoom yuav tsis tig lawm, nws ya tawm raws tangential kev taw qhia ntawm txoj kev sib hloov tam sim no, thiab cov khoom puas ntawm lub sijhawm no. Qhov loj ntawm lub zog centrifugal muaj feem xyuam rau qhov loj, txav ceev thiab acceleration (lub vojvoog ntawm kev sib hloov) ntawm cov khoom txav. Rau cov khoom siv hluav taws xob uas tsis welded khov kho, qhov tshwm sim ntawm cov khoom ya mus vim kev sib cais ntawm cov pob qij txha yuav tshwm sim nyob rau hauv qhov kev txiav txim ntawm lub zog centrifugal. Cov khoom tau ua tsis tiav. Lub zog centrifugal uas cov khoom siv hluav taws xob dais los ntawm kev hloov pauv tsis tu ncua ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob hauv cov kev taw qhia ntawm kev txav mus los, xws li cov tsheb khiav, dav hlau, foob pob hluav taws, thiab hloov cov lus qhia, yog li cov khoom siv hluav taws xob thiab cov khoom siv sab hauv yuav tsum muaj zog centrifugal. lwm yam tshaj lub ntiajteb txawj nqus. Lub sijhawm ua yeeb yam yog los ntawm ob peb feeb mus rau ob peb feeb. Siv lub foob pob hluav taws ua piv txwv, thaum qhov kev hloov pauv tau ua tiav, lub zog centrifugal ploj mus, thiab lub zog centrifugal hloov dua thiab ua dua, uas tuaj yeem tsim lub zog centrifugal mus ntev. Kev ntsuas nrawm tas li (kev ntsuas centrifugal) tuaj yeem siv los ntsuas qhov muaj zog ntawm cov qauv vuam ntawm cov khoom siv hluav taws xob, tshwj xeeb tshaj yog cov ntim loj ntawm cov khoom siv.

3. Kev ntxhov siab ntawm cov dej noo

Moisture stress yog hais txog kev ntxhov siab ntawm cov dej noo uas cov khoom siv hluav taws xob ua rau muaj zog thaum ua haujlwm hauv ib puag ncig atmospheric nrog cov av noo. Cov khoom siv hluav taws xob zoo heev rau cov av noo. Thaum tus txheeb ze av noo ntawm ib puag ncig tshaj 30% RH, cov ntaub ntawv hlau ntawm cov khoom yuav raug corroded, thiab cov hluav taws xob kev ua haujlwm tsis zoo yuav drift los yog tsis zoo. Piv txwv li, nyob rau hauv lub sij hawm ntev-lub sij hawm high humidity tej yam kev mob, lub rwb thaiv tsev kev ua tau zoo ntawm insulating cov ntaub ntawv txo qis tom qab nqus noo noo, ua rau luv luv Circuit Court los yog high-voltage hluav taws xob shocks; tiv tauj cov khoom siv hluav taws xob, xws li cov ntsaws ruaj ruaj, lub qhov (socket), thiab lwm yam, yog qhov yooj yim rau corrosion thaum ya raws txuas rau saum npoo, ua rau cov oxide zaj duab xis, uas ua rau kom muaj kev tiv thaiv ntawm cov cuab yeej tiv tauj, uas yuav ua rau lub Circuit Court raug thaiv thaum mob hnyav. ; nyob rau hauv ib qho chaw ntub dej heev, huab cua lossis dej vapor yuav ua rau muaj qhov tshwm sim thaum lub relay hu tau qhib thiab tsis tuaj yeem ua haujlwm ntxiv lawm; semiconductor chips yog rhiab heev rau cov dej vapor, ib zaug cov nti nto dej vapor Txhawm rau tiv thaiv cov khoom hluav taws xob los ntawm kev ua kom dej vapor, encapsulation lossis hermetic ntim tshuab tau txais los cais cov khoom ntawm sab nraud thiab cov pa phem. Cov kev ntxhov siab ntawm cov khoom siv hluav taws xob yog los ntawm cov dej noo ntawm cov khoom siv txuas nrog hauv qhov chaw ua haujlwm ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob thiab cov dej noo uas nkag mus rau hauv cov khoom. Qhov loj ntawm qhov kev ntxhov siab ntawm cov dej noo yog cuam tshuam rau qib ntawm ib puag ncig cov av noo. Cov cheeb tsam sab qab teb sab hnub tuaj ntawm kuv lub teb chaws yog thaj chaw uas muaj cov av noo siab, tshwj xeeb tshaj yog nyob rau lub caij nplooj ntoo hlav thiab lub caij ntuj sov, thaum cov txheeb ze av noo nce mus txog 90% RH, qhov cuam tshuam ntawm cov av noo yog ib qho teeb meem uas tsis tuaj yeem zam. Kev hloov pauv ntawm cov khoom siv hluav taws xob rau kev siv lossis khaws cia nyob rau hauv cov av noo siab tuaj yeem raug soj ntsuam los ntawm qhov ntsuas kub ntawm lub xeev ruaj khov thiab cov av noo tsis kam.

4. ntsev tsuag kev nyuaj siab

Cov tshuaj tsuag ntsev yog hais txog cov ntsev tsuag kev ntxhov siab rau ntawm qhov chaw ntawm cov khoom thaum cov khoom siv hluav taws xob ua haujlwm nyob rau hauv ib puag ncig atmospheric dispersion ib puag ncig uas muaj cov ntsev me me. Ntsev pos feem ntau yog los ntawm huab cua huab cua hauv hiav txwv thiab thaj av ntsev hauv dej hiav txwv. Nws cov khoom tseem ceeb yog NaCl thiab dej vapor. Lub hav zoov ntawm Na + thiab Cl-ions yog lub hauv paus ua rau corrosion ntawm cov ntaub ntawv hlau. Thaum cov tshuaj tsuag ntsev adheres rau saum npoo ntawm lub insulator, nws yuav txo nws qhov chaw tiv thaiv, thiab tom qab lub insulator absorbs cov ntsev tov, nws ntim kuj yuav txo los ntawm 4 qhov kev txiav txim ntawm magnitude; Thaum cov tshuaj tsuag ntsev adheres rau saum npoo ntawm cov khoom txav mus los, nws yuav nce ntxiv vim yog cov cim ntawm corrosives. Yog tias qhov sib txhuam coefficient nce, qhov txav txav tuaj yeem daig; Txawm hais tias encapsulation thiab huab cua-sealing tshuab tau txais kev pom zoo kom tsis txhob muaj corrosion ntawm semiconductor chips, cov pins sab nraud ntawm cov khoom siv hluav taws xob yuav inevitably poob lawv txoj haujlwm vim ntsev tsuag corrosion; Corrosion ntawm PCB tuaj yeem cuam tshuam luv-circuit nyob ib sab. Cov ntsev tsuag kev ntxhov siab uas cov khoom siv hluav taws xob dais los ntawm cov tshuaj ntsev hauv cov cua. Hauv thaj chaw ntug dej hiav txwv, cov nkoj, thiab cov nkoj, cov huab cua muaj ntsev ntau, uas muaj kev cuam tshuam loj heev rau kev ntim cov khoom siv hluav taws xob. Cov tshuaj tsuag ntsev yuav tuaj yeem siv los ua kom nrawm dua corrosion ntawm lub pob hluav taws xob los ntsuas qhov hloov tau ntawm cov ntsev ua paug.

5. Electromagnetic stress

Electromagnetic stress yog hais txog electromagnetic stress uas ib qho khoom siv hluav taws xob dais hauv electromagnetic teb ntawm alternating hluav taws xob thiab magnetic teb. Electromagnetic teb muaj xws li ob yam: hluav taws xob teb thiab magnetic teb, thiab nws cov yam ntxwv yog sawv cev los ntawm hluav taws xob teb zog E (los yog hluav taws xob hloov D) thiab sib nqus flux ceev B (los yog magnetic teb zog H) feem. Nyob rau hauv lub electromagnetic teb, hluav taws xob teb thiab lub magnetic teb yog zoo sib xws. Lub sijhawm sib txawv hluav taws xob yuav ua rau cov hlau nplaum sib nqus, thiab lub sijhawm sib txawv ntawm qhov sib nqus yuav ua rau lub tshuab hluav taws xob. Kev sib nrig sib excitation ntawm hluav taws xob teb thiab magnetic teb ua rau lub zog ntawm electromagnetic teb los ua ib tug electromagnetic yoj. Electromagnetic tsis tuaj yeem nthuav tawm ntawm lawv tus kheej hauv lub tshuab nqus tsev lossis teeb meem. Hluav taws xob thiab magnetic teb oscillate nyob rau hauv theem thiab yog perpendicular rau ib leeg. Lawv txav mus rau hauv daim ntawv ntawm nthwv dej hauv qhov chaw. Kev txav hluav taws xob, thaj chaw sib nqus, thiab kev nthuav tawm cov kev taw qhia yog perpendicular rau ib leeg. Kev nthuav tawm ceev ntawm electromagnetic nthwv dej hauv lub tshuab nqus tsev yog qhov ceev ntawm lub teeb (3 × 10 ^ 8m / s). Feem ntau, electromagnetic tsis cuam tshuam los ntawm electromagnetic cuam tshuam yog xov tooj cua thiab microwaves. Qhov siab dua qhov zaus ntawm electromagnetic nthwv dej, qhov muaj peev xwm hluav taws xob hluav taws xob ntau dua. Rau cov khoom siv hluav taws xob, electromagnetic cuam tshuam (EMI) ntawm cov khoom siv hluav taws xob yog qhov tseem ceeb cuam tshuam rau electromagnetic compatibility (EMC) ntawm cov khoom. Qhov kev cuam tshuam ntawm electromagnetic no los ntawm kev cuam tshuam ntawm cov khoom siv hluav taws xob sab hauv thiab kev cuam tshuam ntawm cov khoom siv hluav taws xob sab nraud. Nws yuav muaj kev cuam tshuam loj rau kev ua haujlwm thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob. Piv txwv li, yog tias cov khoom sib nqus sab hauv ntawm DC / DC fais fab module ua rau electromagnetic cuam tshuam rau cov khoom siv hluav taws xob, nws yuav cuam tshuam ncaj qha rau cov zis ripple voltage tsis; qhov cuam tshuam ntawm lub xov tooj cua zaus hluav taws xob ntawm cov khoom siv hluav taws xob yuav ncaj qha nkag mus rau hauv cov khoom siv hluav taws xob los ntawm lub plhaub ntawm cov khoom, lossis hloov mus rau Kev Ua thab plaub thiab nkag mus rau hauv cov khoom. Kev tiv thaiv hluav taws xob cuam tshuam muaj peev xwm ntawm cov khoom siv hluav taws xob tuaj yeem raug soj ntsuam los ntawm kev ntsuas hluav taws xob sib raug zoo thiab electromagnetic teb ze-tsav scanning nrhiav kom pom.