Kontrol sistemleri-4
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Transcript of Kontrol sistemleri-4
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BLOK ŞEKİLLER
İleri yönde transfer fonksiyonu = )()(
)(sG
sE
sC
Açık çevrim transfer fonksiyonu = ( )
( )( )
C sG s
R s ( geribesleme olmadığı zamanda )
Kapalı çevrim transfer fonksiyonu :
( ) ( ) ( )
( ) ( ) ( )
( ) ( ) ( ) ( )
( ) ( ) ( ) ( ) ( )
( ) ( )
( ) 1 ( ) ( )
C s G s E s
E s R s B s
E s R s H s C s
C s G s R s H s C s
C s G s
R s G s H s
Gürültü ilaveli kapalı sistem:
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)()()(1
)(
)(
)(
21
2
sHsGsG
sG
sN
sCN
1 2
1 2
( ) ( ) ( )
( ) 1 ( ) ( ) ( )RC s G s G s
R s G s G s H s
)()()( 21 sHsGsG artarsa
)(
1
)(
)(
sHsR
sCR
1)()( 11 sHsG
ve 0)(
)(
sN
sGN Kapalı çevrimin avantajı
1)()()( 112 sHsGsG
2
1
0
0
C
idte
R
eei i
Laplace dönüşümü (1) ve (2) için ;
R
sEsEsI i )()()( 0
sC
sIsE
)()(0
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Blok Diyagram İndirgenmesi
İleri besleme yönündeki transfer fonksiyonları çarpımları aynı kalmalı Çevrimler etrafındaki transfer fonksiyonları çarpımları aynı kalmalı Örnek:
( A)
(B)
121
21
1 HGG
GGA
3AxGB 121
321
1 HGG
GGGB
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1
2
121
321
11
G
Hx
HGG
GGG
12211
23211HGGG
HGGG
122
11
2321122
11
HGGG
HGGGHGGG
1211
2321211
1
1
HGGG
HGGHGGG
232121
121
121
321
1
1
1 HGGHGG
HGGx
HGG
GGG
232121
321
1 HGGHGG
GGG
1)(
)(
sR
sC( Her bir döngü etrafındaki transfer fonksiyonları çarpımı )
3212321211)(
)(GGGHGGHGG
sR
sC
)(1
)(
)(
)(
sG
sG
sR
sC
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Filename: kon_sis_tem_4.doc Directory: C:\Documents and
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Title: Subject: Author: hp Keywords: Comments: Creation Date: 23.10.2009 15:40:00 Change Number: 19 Last Saved On: 08.07.2010 15:33:00 Last Saved By: PERFECT Total Editing Time: 403 Minutes Last Printed On: 08.07.2010 15:42:00 As of Last Complete Printing Number of Pages: 5 Number of Words: 189 (approx.) Number of Characters: 1.082 (approx.)