Hloov chaw fais fab mov PWM tawm tswv yim tswj hom lus piav qhia
Cov hauv paus ntsiab lus ntawm hloov fais fab mov yas
Cov hloov pauv zaus ntawm PWM feem ntau tas mus li, thiab cov kev tswjfwm cov khoom siv suav nrog cov zis voltage, thiab lub ncov tam sim no ntawm hloov cov khoom siv. Cov phiajcals no tuaj yeem tsim ib lub voj ib zaug, ob lub voj, lossis ntau lub voj ceev lub kaw lus, ua tiav lub hom phiaj hluav taws xob, lub zog tam sim no, thiab tas li lub zog. Nyob rau tib lub sijhawm, nws kuj tuaj yeem ua tiav qee cov haujlwm ntxiv xws li overcurrent tiv thaiv, tiv thaiv kev sib nqus, thiab tam sim no sib luag. Tam sim no muaj tsib hom ntawm PWM tawm tswv yim tswj hom.
Hloov Khoom Siv Hluav Taws Xob PWM Tswv yim tswj hom
Feem ntau hais lus, lub vev xaib sab pem hauv ntej tuaj yeem ua kom yooj yim siv cov kauj ruam dhau los hauv daim duab 1, qhov twg los sawv cev rau lub hnab tso zis ntawm kev tswj hwm hluav taws xob. Raws li kev xaiv ntawm kev sib txawv PWM Tswv yim tswj cov qauv, cov zis hluav taws xob out, thiab ind point c lossis d) nyob rau hauv lub Circuitor tam sim no (coj los ua cov qauv tswj cov cim. Thaum cov zis voltage out yog siv los ua cov cim ntsuas cov qauv hauv daim duab 2 kom tau cov cim hluav taws xob hauv daim duab 2 kom tau cov cim hluav taws xob hauv daim duab 2 kom tau cov cim hluav taws xob hauv lub PWM maub los. Lub zog hluav taws xob ua haujlwm amplifier (e / a) hauv daim duab 2 muaj peb lub zog: ① relifbe uref kom ntseeg tau tias ruaj khov voltage tseeb nyob rau hauv lub xeev ruaj khov. DC Amplification Amplifier yog theorand hloov lub sij hawm txuas nrog rau cov zis lub sij hawm txuas nrog rau lub dc tsawg-zaus ua ke thiab muaj ntau zaus Cheebtsam. Vim yog lub siab ntau thiab amplitude ntawm lub suab kaw, yog hais tias lub histenuation ntawm high-zaus hloov suab nrov tsis txaus, lub xeev cov lus teb yuav tsis ruaj khov; Yog hais tias lub siab-ua kom lub suab hloov pauv loj heev yog loj heev, cov lus teb yeej yuav qeeb. Txawm hais tias tsis sib haum, tus qauv tsim qauv rau cov hluav taws xob ua haujlwm ua kom muaj zog "calibrate tag nrho cov voj voog kaw-lub zog kom ntseeg tau tias ua haujlwm ruaj khov.
Cov yam ntxwv ntawm hloov fais fab mov PWM
1) Txawv PWM tawm tswv yim tswj cov qauv muaj lawv tus kheej zoo thiab qhov tsis zoo. Thaum tsim qauv hloov hluav taws xob hloov chaw, cov hom PWM tswj zoo yuav tsum tau xaiv raws li qhov xwm txheej tshwj xeeb.
2) Kev xaiv ntawm ntau hom kev tswj hwm thiab PWM cov lus qhia cov tswv yim yuav tsum tau ua ke ntawm cov khoom siv hluav taws xob tshwj xeeb ntawm cov zis hluav taws xob, thiab cov haujlwm sib txawv sib txawv ntau yam.
3) Lub PWM tswj hom yog nce thiab sib cuam tshuam, thiab tuaj yeem hloov mus ua ib leeg.
