səhifə 3/10 tarix 10.05.2023 ölçüsü 488,95 Kb. #110733
ANALOG-RAQAMLI O\'ZGARTGICHLAR
7 .3. Ku z at u vc h i tu ri dagi A RO‘
Y u q o rid ag i b oshqar i sh sxe m a si n i ozgina m urak k ab la sh ti r i b , j a m l ovc hi hisobl a gi ch ni r e v ers h isobl a gichga a l m ashtirib va u n i i sh i ni t a’ m in lovc h i ele m entlarni k ir i t is h o rqa l i kuz a tuv c hi tu r i d a g i ARO‘ olish m u m ki n . Bu o r q a li esa o ‘ zga r tir i sh v a q t a h a m i y at l i ravis h da qis q ara d i, lekin a g ar tizi m da o ‘ zga r t i r i s h k a na l la r i s o n l ari kam bo ‘ lsa u s h b u m etodni q o‘lla n i s hi m a qs a d ga m uv o fiq bo ‘ la d i , c h un k i b i t ta A RO‘ bitta kanal ga ishla y d i .
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7 .4. R azr y ad m a -ra z r y ad te n glashtiruv c hi ARO‘
Ushbu ARO‘ o‘zga r tiris h ni katta te z li kda ahborotla rn i y i g ‘ ish va i s h l o v be r ishli ko ‘p k a na ll i t i zi m larda qo‘lla ni la d i . U s hbu sxe m ani k et m a-ketli t a qq o sl as h ARO‘ d eb h am no m lasa bo‘l a d i . Ko m parat o r U k ir v a ra q a m l i anal o g o ‘ zga r ti rg ichni n g U chik k e t m a-ket y uqori razr y addan bos h l a b ta qq osla y d i . T a q q o s l a s h ning har b i r qada m ida navb at d a gi razr y a d ning qi y m ati o‘rn a til adi 7 . 3. ras m .. U sh bu turda g i o ‘ zga r t i rg ic hn i n g a v z al li gi o ‘ zgarti r ish int e rv a li d o i m i y l igi va U kir b o g ‘liq e m a sl ig i . Lekin ushbu t u r d ag i k a m chili k l a r d a n xoli e m as. O ‘ zgartir i s h xatola r i g a RAO‘ x at o likla r i , ko m parator v a ta y an c h ku c hla ni sh i ni n otur g ‘u nl i g ta ’ sir eta d i. Yuqori a n iq l ik o‘zga rt irg c hini ng a ha m i y atli qi m m at l a ni shi bilan a m a l ga oshiril a d i .
7 .4. r a s m . Raz r y a d m a -razr y ad t e ngl a sh t iri s hli ARO ‘ .
7 .5. I nt e gr al li ARO‘
Integra l li a n a l o g - r a q a m l i o ‘ z g ar t i r i shda r a s m . 7 . 5 . int e gr a l la s h qi y al ig i b i t ta y ok i ikkita l i bo‘l g a n b i r ne c ha variantlar qo‘ll a n is hi m u m ki n . Bu n day o ‘ zgarti r g i c h y axshi c h i ziqli xarakt eristi ka l arga e ga bo ‘ lib k am h ara j at li dir. Uni is h c h i s ik l i u c hta d av r d a n i b o r at: n o lni ko r re ks i y asi (T o ), ki r i s h ku c h l a n is hi ni integ r a l l ash ( T 1 ), v a t a y anch ku c hlanishini integ r a l l a sh (T 2 ), y a ’ ni avv a l kuchl a n ish vaqt inte r v a li g a o ‘ zga r ti r ila d i, ke y i n esa va q t i n te r va l i o‘lch a n ad i . “K u c h l a ni s h -va q t inte r va l i” o ‘ zga r tir g ich i n t e gr a tor a sos i da tu z il ad i , chu n ki d oi m iy ki r i s h ku c hl an ishi d a integr a to r n ing c hi q ish k uchl an ishi – vaq t n i n g c hi zi qli fu n k si y as i dir:
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U ch i k R C U k i r t d t R C U k i r t
S x e m ani ko ‘ rib c hiqa m iz . O ‘ zgar t iri s hni birin c hi b osqi ch ida int e gr at o r k i ri shiga kirish ko m m ut ato r i o r qa l i U k ir ku chl an ishi beril ad i v a (T 1 ) v a q t o r a l ig ‘id a b i ri n c hi i n t e gr al l as h a m al g a o s hi r ila d i , natijada int e gr at or c h iqi s h ida U kir kuc h l a nishiga p r opo rs i on a l b o ‘l g a n kuchlanish o ‘ rn a til a d i , y a ’ ni
U c h i k U k i r t R C . O ‘ zgartiris h ni i k k i n chi bosqi c hida esa i n te g ra to r k i ri shiga U ki r ku c hl a ni s higa ishor as i te s ka r i b o ‘l g a n E 0 ulan a d i , integ r a t or
T
2
chiqishidagi kuchlanish (T Ukir 1 ) vaqt oralig‘ida Uchik maksimal 0
q i y m atidan n olg a c ha o ‘ zga r a d i . In t egr a t o r c h iq i shi d a no l daraj a siga “ nolko m parator” er is hga n da natij a viy hisob l agi c h kiri s higa takt i m pu l sla r i ni ki r i s h i t o ‘x ta ti la d i .
7 . 5 . r a s m . Inte g ra llas hli ARO ‘ .
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