Hloov hluav taws xob muab paj looj tes
Cov hloov pauv zaus ntawm PWM feem ntau tas mus li, thiab cov kev tswj hwm cov qauv, tso zis ua cov hluav taws xob voltage, thiab lub ncov tam sim no ntawm hloov ntaus ntawv. Los ntawm cov phiajcim no tuaj yeem tsim ib lub voj ib-voj Tam sim no muaj tsib lub ntsiab PWM tawm tswv yim tswj hom.
Hloov Khoom Siv Hluav Taws Xob PWM Tswv yim tswj hom
Feem ntau hais lus, lub ntsiab hluav taws xob hauv Circuit Court tuaj yeem siv los ua kom yooj yim ntawm cov phaw nkhaus uas pom hauv daim duab 1, U tsis muaj kev tswj hwm tias kev tswj hwm hluav taws xob ntawm lub PWB tso zis tsav teeb liab. Raws li kev xaiv ntawm kev sib txawv PWM tawm tswv yim tswj hom, cov khoom siv hluav taws xob voltage out tam sim no (los ntawm taw tes C lossis taw tes D) tuaj yeem siv ua qauv ntsuas kev tswj hwm. Thaum cov zis voltage out yog siv los ua cov cim ntsuas cov qauv, feem ntau yog ua rau lub cim hluav taws xob tau ua ntej, uas yog tom qab ntawd ua tiav lossis pub ncaj qha rau lub PWM maub los. Lub luag haujlwm ntawm cov kev ua haujlwm hluav taws xob ua haujlwm tshaj plaws (E / A) hauv Daim Duab 2 yog peb lub voltage ntawm cov kev cai voltage nyob rau hauv lub xeev khov kho. DC Amplification tau txais ntawm OP-AMP yog theoretically infinite, uas yog qhov tseeb qhib-voj Amplification tau txais ntawm OP-AMP. ② Yuav hloov cov chaw tso zis hluav taws xob tseem ceeb nrog cov hluav taws xob hluav taws xob (u) huv si Vim tias cov suab nrov ntawm cov zaus ntau dua, qhov nrawm dua, cov suab nrov hloov pauv tsis txaus, tom qab ntawd lub xeev khov kho tsis ruaj khov; High-furnecency hloov suab ceeb toom yog loj heev, ces cov teb dynamic sai sai. Txawm hais tias tsis sib haum, tab sis tus tsim kev tsim qauv ntawm lub zog hluav taws xob ua haujlwm yuav tsum tau ua kom muaj qhov tsawg.
Hloov chaw fais fab PWM cov yam ntxwv
1) Txawv Tshav Pob Nrig Sib txawv tswj hom muaj nws tus kheej sib txawv thiab tsis zoo, hauv kev xaiv cov kev xaiv PWM tswj cov hom uas tsim nyog.
2) Kev xaiv ntawm ntau yam qauv kev tswj hwm cov tswv yim ntawm kev xaiv cov khoom siv hluav taws xob ntau ntawm cov suab nrov loj, cov voj voog hloov tsheb hloov ntau yam.
3) PWM tswj hom yog qhov kev txhim kho ntawm kev hloov pauv, yog kev sib pauv, nyob rau qee yam kev mob tuaj yeem hloov mus rau ib leeg.
