1. ukungahambisani nokuphazanyiswa kanye nokuhambisana kwe-electromagnetic
1. Incazelo yokugxambukela
Ukuphazamiseka kusho ukuphazamiseka okubangelwa umsindo wangaphandle kanye namagagasi kagesi angenamsebenzi ekwamukelweni kwemojuli yekristalu ewuketshezi.Kungase futhi kuchazwe njengomphumela wokuphazamiseka obangelwa amandla angadingeki, okuhlanganisa ithonya lezinye izimpawu, ukukhishwa okungamanga, umsindo wokwenziwa, njll.
２.Ukuhambisana kwe-electromagnetic kanye ne-anti-interference
Ngakolunye uhlangothi, imishini kagesi kanye nezifunda ze-elekthronikhi ngokuphazanyiswa kwangaphandle, ngakolunye uhlangothi, kuzokhiqiza ukuphazamiseka ezweni langaphandle.Ngakho-ke, isignali ye-elekthronikhi iyisiginali ewusizo kumjikelezo, kanti ezinye izifunda zingase zibe nomsindo.
Ubuchwepheshe bokulwa nokuphazamiseka kwesekethe ye-elekthronikhi yingxenye ebalulekile ye-EMC.I-EMC imele i-e lectro MAG into ethi netic Compatibility, ehumusha ngokuthi Ukuhambisana kwe-electromagnetic.Ukuhambisana kwe-electromagnetic kuwumsebenzi wezinto zikagesi ezenza imisebenzi yazo endaweni ye-electromagnetic ngaphandle kokudala ukuphazamiseka okungabekezeleleki.
Ukuhambisana kwe-Electromagnetic kunezincazelo ezintathu: 1. Izinto zikagesi zizokwazi ukucindezela ukuphazamiseka kozibuthe kwangaphandle.2. Ukuphazamiseka kazibuthe kagesi okukhiqizwa okokusebenza ngokwawo kuzoba ngaphansi komkhawulo onqunyiwe futhi ngeke kuthinte ukusebenza okuvamile kwezinye izinto zikagesi endaweni efanayo kazibuthe;3. Ukuhambisana kwe-Electromagnetic kwanoma iyiphi idivayisi kagesi kuyalinganiseka.
Izinto ezintathu zokulwa nokuphazamiseka
Kunezici ezintathu ezizokwakha ukuphazamiseka kwe-electromagnetic: umthombo wokuphazamiseka kazibuthe, indlela yokuhlanganisa yokuphazanyiswa kukazibuthe, okokusebenza okubucayi kanye nesekhethi.
1. Imithombo yokuphazamiseka kazibuthe ihlanganisa imithombo yokuphazamiseka yemvelo kanye nemithombo yokuphazamiseka eyenziwe umuntu.
2. Izindlela zokuhlanganisa zokuphazamiseka kazibuthe zibandakanya ukuqhutshwa kwemisebe kanye nemisebe.
(1) ukuxhumanisa i- conduction: Kuyinto yokuphazamiseka ukuthi umsindo uqhutshwa futhi uhlanganiswe kusukela emthonjeni wokuphazamisa ukuya empahleni ebucayi kanye nesekhethi ngokuxhuma phakathi komthombo wokuphazamiseka nezinto ezibucayi.Isifunda sokudlulisa sihlanganisa abaqhubi, izingxenye eziqhutshwayo zemishini, ukunikezwa kwamandla, i-impedance evamile, indiza yaphansi, ama-resistors, ama-capacitors, ama-inductors kanye nama-inductors ahlangene, njll.
(2) ukuhlangana kwemisebe: Isignali yokuphazamiseka isakazeka phakathi nendawo ngendlela yamagagasi kagesi kagesi, futhi amandla okuphazamisa akhishwa endaweni ezungezile ngokuvumelana nomthetho wokusakazeka kwe-electromagnetic.Kunezinhlobo ezintathu ezivamile zokuhlangana kwemisebe: 1. Igagasi kazibuthe elikhishwa uthi lomthombo wokuphazamiseka litholwa ngephutha uthi lwempahla ebucayi.2.Inkambu ye-electromagnetic yesikhala ihlanganiswe ngendlela elandelwayo yi-conductor, ebizwa ngokuthi i-field-to-line coupling.3.Ukuhlangana kokukhiqiza isignali yokungeniswa kwemvamisa ephezulu phakathi kwamakhondaktha amabili afanayo kubizwa ngokuthi ukuhlanganisa umugqa kuya komugqa.
4. Ifomula yezinto ezintathu zokunqanda ukuphazamiseka
ichaza isekethe ngezinga lokugxambukela elivezwe ku-N, bese okuthi n ingasetshenziswa ukuchaza ifomula NG * C/I: G njengokushuba komthombo womsindo;C isici sokuhlanganisa umthombo womsindo usidlulisela endaweni ephazamisekile ngendlela ethile;Ngiwukusebenza okuphikisana nokuphazamiseka kwesekethe ephazamisekile.
G, C, I okusho ukuthi izakhi ezintathu ezimelene nokugxambukela.Kungabonakala ukuthi izinga lokuphazamiseka kusekethe lilingana nokuqina g komthombo womsindo, ngokulingana nento ehlanganisayo engu-C, futhi ihambisana ngokuphambene nokusebenza okulwa nokuphazamiseka I kwesekethe ephazamisekile.Ukuze wenze n encane, ungenza okulandelayo:
1. G ukuba kuncane, okungukuthi, ubukhona benhloso bokuqina komthombo wokuphazanyiswa endaweni ukucindezela okuncane.
2. C kufanele kube mncane, umsindo endleleni yokudlulisela ukunikeza ukuncishiswa okukhulu.
3. Ngiyakhula, endaweni yokuphazanyiswa ukuthatha izinyathelo zokulwa nokuphazamiseka, ukuze ikhono lokulwa nokuphazamiseka kwesekethe, noma ukucindezelwa komsindo endaweni yokuphazamiseka.
Ukwakhiwa kwe-anti-interference (EMC) kufanele kuqale ezintweni ezintathu ukuze kunqandwe ukuphazamiseka futhi kufinyelele izinga le-EMC, okungukuthi, ukuvimbela umthombo wokuphazamiseka, ukunqamula indlela kagesi yokuhlanganisa kanye nokwenza ngcono ukungatheleleki kwemishini ebucayi.
3. Umgomo wokucinga imithombo yomsindo,
kungakhathaliseki ukuthi isimo siyinkimbinkimbi kangakanani, kufanele siqale sifunde indlela yokucindezela umsindo emthonjeni womsindo.Isimo sokuqala ukuthola umthombo wokuphazamiseka, okwesibili ukuhlaziya ukuthi kungenzeka yini ukucindezela umsindo nokuthatha izinyathelo ezihambisanayo.
Eminye imithombo yokuphazamiseka isobala, njengombani, ukudluliswa komsakazo, igridi yamandla ekusebenzeni kwemishini yamandla aphezulu.Lo mthombo wokuphazamiseka awukwazi ukuthatha isinyathelo emthonjeni wokuphazamiseka.
Amasekhethi e-elekthronikhi anzima kakhulu ukuthola imithombo yokuphazamiseka.Thola umthombo wokuphazamiseka uwukuthi: izinguquko zamanje, i-voltage ngokuphawulekayo indawo yomthombo wokuphazanyiswa wesekethe ye-elekthronikhi.Ngokwezibalo, izindawo ezinkulu ze-DI/dt Kanye ne-du/DT ziyimithombo yokuphazamiseka.
4. Izimiso zokuthola izindlela zokusakaza umsindo
1. Umthombo oyinhloko womsindo we-inductive coupling ngokuvamile uyisimo sokuhluka kwamanje okukhulu noma ukusebenza kwamanje okukhulu.
2. Izinguquko zamandla kagesi zinkulu noma ziphakeme esimweni sokusebenza kwe-voltage ephezulu, ngokuvamile umthombo oyinhloko we-capacitive coupling.
3. Umsindo we-common impedance coupling nawo ubangelwa ukwehla kwe-voltage ku-impedance evamile ngenxa yezinguquko ezinkulu zamanje.
4. Ezinguqukweni ezinkulu zamanje, ingxenye yayo ye-inductance ebangelwa umthelela ibucayi kakhulu.Uma okwamanje kungashintshi,.Ngisho noma inani lazo eliphelele likhulu kakhulu, azibangeli umsindo wokuhlanganisa ongenisayo noma we-capacitive futhi zengeze ukwehla kwamandla kagesi okuzinzile ku-impedance evamile.
Izinto ezintathu zokulwa nokuphazamiseka
Isikhathi sokuthumela: Juni-09-2020
