PWM isilawuli - emisha busebenze

Ukuthuthukiswa zobuchwepheshe kuyinto nezimpi eziningana: ukudiliza, ukuthuthukisa ubuchwepheshe babo ukukhiqiza, ukuvela ezintsha izixazululo, njll Zonke lezi zindawo bayavumelana obuhle ukusetshenziswa okuhloswe imishini emikhakheni ehlukahlukene. Ngokuhamba kwesikhathi, lapho schematics kanye nobuchwepheshe obusha ukuthi uthuthukise ukusebenza zikagesi. Omunye thuluzi Ingabizwa kufanele ngokuthi PWM isilawuli. Le divayisi compact, okuyinto ikakhulukazi elisetshenziswa ahlukahlukene ugesi imithombo. It nokobana indlela yamandla aphindeke kabili ye ukuguqulwa futhi isebenza kahle ezihlukahlukene izinto zasendlini, kanye emsebenzini.

Modern PWM isilawuli has high speed futhi lisetshenziswa isibonelo ukushintsha segezi. isimiso sayo ukusebenza ulula, Ishintsha DC voltage ku pulses unxande imvamisa nesibopho umjikelezo ethize. Le miyalezo ibe isidluliselwa uphinde uphathe enamandla okukhipha module esekelwe transistors. Lokhu kuvumela usebenzisa uhlelo elula ukuthola umthombo adjustable voltage. Kubalulekile zobuchwepheshe, lapho Ubukhulu okuyisidingo. PWM isilawuli uvunyelwe ukudala amadivayisi compact electronic: ikhompuyutha ephathekayo, amakhompuyutha, amathelevishini, njll

Ingasetshenziselwa sokuthola izixazululo ahlukahlukene wesifunda ukulawula ijubane drive. Xhumana nathi kuleli cala kungaba kwenziwe ngokuvumelana nemingcele ezahlukene - wamanje noma voltage, ezembula isimo into control. Kungenzeka komugqa noma isivinini emincane ye isignali motor EMF kusukela inzwa lokushisa, njll Kuye isimo kanye isignali drive, isilawuli PWM ngeke sikhuphule noma sehlise ijubane motor. Isibonelo esihle ukusetshenziswa kule divayisi yokukhiqiza i Converter imvamisa.

Imishini yasendlini ngokuvamile ezisetshenziswa PWM isilawuli TL494, kahle kungase kutholakale ukusebenza. Chip ine okuhlangene imvamisa generator. Lokhu ulunika ukuzimela ethile emsindweni ovela zangaphandle. One- noma ezimbili-unhlangothi imodi wokusebenza Ivumela kanyekanye eqondile okuhlanekezelwe okukhipha amasignali engasetshenziswa ukuthola olunye ushintsho. Ngokuvamile, umsebenzi wakhe elungiselelwe ukusetshenziswa kwamandla usuke. Inombolo-I / O iyahlangabezana nezidingo kakade athuthukile izikimu ukusetshenziswa yayo.

Ngaphandle izikimu standard, abalawuli PWM asetshenziswa kakhulu umklamo amadivayisi ezintsha. Ezinye zazo, cishe, maduze uqale ozofakwa ngezinga ezimbonini. Ngosizo lwabo kulula ukuqoqa isilawuli kohlelo ingasebenza emikhakheni ehlukahlukene.

With ukuthuthukiswa yokukhiqiza ubuchwepheshe yalezi amadivaysi singasho ukuthi ngesikhathi kuzoba khona compact ngesivinini amadivayisi nokuqalisa isimiso ngenhla. Lokhu kuzovumela nabalawuli ukuthuthukisa ukusebenza kuhle. Amadivayisi anjalo angase akwazi ukuncintisana analog yabo noma "izimbangi" digital futhi asetshenziswe kagesi ukulawula izifunda.