Ngokuthuthukiswa kobuchwepheshe bokuhlunga isixhumi samandla, ubuchwepheshe bokuhlunga busebenza kahle kakhulu ekucindezeleni ukuphazamiseka kwe-electromagnetic, ikakhulukazi isignali ye-EMI yokushintshwa kwamandla kagesi, okungadlala indima enhle ekuqhutshweni kokuphazamiseka kanye nemisebe yokuphazamiseka.Amasiginali wokuphazamisa wemodi ehlukile kanye namasiginali wokuphazamisa wemodi evamile angamela wonke amasiginali okuphazamisa ekunikezeni amandla.
Eyokuqala ibhekisela kakhulu kusignali yokuphazamiseka edluliswa phakathi kwezintambo ezimbili, okungeyokuphazanyiswa kwe-symmetry futhi ibonakala ngamafrikhwensi aphansi, i-amplitude yokuphazamiseka okuncane kanye nokuphazamiseka okuncane okukhiqizwe kwe-electromagnetic.Lokhu kwakamuva kubhekiselwa ekudlulisweni kwezimpawu zokugxambukela phakathi kocingo nendawo ebiyelwe (umhlaba), okungeyokugxambukela kwe-asymmetric, futhi ebonakala ngamafrikhwensi aphezulu, i-amplitude enkulu yokuphazamiseka kanye nokuphazamiseka okukhulu okukhiqizwe yi-electromagnetic.
Ngokusekelwe ekuhlaziyeni okungenhla, isignali ye-EMI ingalawulwa ngaphansi kwezinga lomkhawulo elishiwo amazinga e-EMI ukuze kuzuzwe injongo yokunciphisa ukuphazamiseka kokwenziwa.Ngokungeziwe ekucindezelweni okusebenzayo kwemithombo yokuphazamiseka, izihlungi ze-EMI ezifakwe kumasekethe okokufaka nokuphumayo okuphakelwa kwamandla okushintshayo nazo ziyindlela ebalulekile yokucindezela ukuphazamiseka kozibuthe.Imvamisa yokusebenza ejwayelekile yemishini kagesi imvamisa iphakathi kuka-10MHz no-50MHz.Eziningi zezinga le-EMC lomkhawulo wezinga eliphansi lokuphazanyiswa kwe-10 MHZ, ukuze uthole isignali ye-EMI yokushintsha imvamisa ephezulu, inqobo nje uma ukukhetha kwesakhiwo senethiwekhi kulula kakhulu isihlungi se-EMI noma ukuhlukanisa isekethe yesihlungi se-EMI kulula, hhayi nje ukufeza. inhloso yokunciphisa ukushuba kwemodi evamile yamanje, futhi ingenelisa umphumela wokuhlunga wemithetho ye-EMC.
Isimiso sokuklama sesixhumi sikagesi sokuhlunga sisekelwe kumgomo ongenhla.Kunenkinga yokugxambukela phakathi kwezinto ezisebenza ngogesi nokuphakelwa kukagesi naphakathi kwamathuluzi kagesi ahlukahlukene, futhi isixhumi sikagesi esihlungiwe siyisinqumo esihle sokunciphisa ukuphazamiseka.Njengoba iphinikhodi ngayinye yesixhumi sokuhlunga inesihlungi sephasi eliphansi, iphinikhodi ngayinye ingahlunga ngempumelelo imodi evamile yamanje.Ngaphezu kwalokho, isixhumi sikagesi sokuhlunga sinokuhambisana okuhle, usayizi wesixhumi esibonakalayo nosayizi womumo kanye nesixhumi esivamile sikagesi esifanayo, ngakho-ke, zingashintshwa ngokuqondile.
Ngaphezu kwalokho, ukusetshenziswa kwesixhumi samandla okuhlunga nakho kunomnotho omuhle, okuyinhloko ngoba isixhumi samandla esihlungi sidinga ukufakwa kuphela echwebeni lecala elivikelwe.Ngemuva kokuthi isuse ukuphazamisa kwamanje kukhebula, umqhubi ngeke esakwazi ukuzwa isignali yokuphazamiseka, ngakho-ke inokusebenza okuzinzile kunekhebula elivikelwe.Isixhumi sikagesi esihlungiwe asinazo izidingo eziphakeme zokuxhuma kokuphela kwekhebula, ngakho-ke asidingi ukusebenzisa ikhebula elivikelwe lekhwalithi ephezulu, eliphinde libonise umnotho walo ongcono.
Isikhathi sokuthumela: Oct-19-2019