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Instrumentation and Process Control
Lecture 2: Design Aspects of a Process Control System
Dr Ing Naveed Ramzan
Department of Chemical Engineering, U.E.T. Lahore
PakistanDepartment of Chemical Engineering, U.E.T. Lahore
Pakistan
Modelling and Simulation 6. Februar 2008 / Dr. Ing Naveed Ramzan
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Design Elements of a Control System
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Design Elements of a Control System
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Design Elements of a Control System
Primary Measurements
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Design Elements of a Control System
Secondary Measurements
Unmeasured output=(Secondary measurements)
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Design Elements of a Control System
Direct Measurements of external disturbances
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Design Elements of a Control System
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Design Elements of a Control System
A c o n t r o l c o n f i g u r a t i o n i s t h e i n f o r m
a t i o n
s t r u c t u r e t h a t i s u s e d t o c o n n e c t t h e a
v a i l a b l e m e a s u r e m e n t s t o t h e a v a i l a b l e
m a n i p u l a t e d
v a r i a b l e s .
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Design Elements of a Control System
S a m e i n f o r m a t i o n f l o w s t o d i f f e r e n
t
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m a n i p u l a t e d v a r i a b l e s
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Design Elements of a Control System
S a m e m a n i u l a t e d v a r i a b l e s b u t d i f f e r
e n t
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m e a s u r e m e n t s
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Design Elements of a Control System
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F e e d b a c k c o n t r o l c o n f i g u r a t i o n F e e d
f o r w a r d c o n t r o l c o n f i g u r a t i o n
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Design Elements of a Control System
G e n e r a l C o n t r o l C o n f i g u r a t i o n s
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I n f e r e n t i a l c o n t r o l c o n f i g u r a t i o
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Design Elements of a Control System
G e n e r a l C o n t r o l C o n f i g u r a t i o n s
- - - Si n l e i n u t , S i n l e o u t u t S I S O
- - - M u l t i p l e i n p u t , M u l t i p l e o u t p u t (
M I M O )
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Design Elements of a Control System
- - - P r o o r t i o n a l Co n t r o l
- - - I n t e g r a l C o n t r o l
- - - D e r i v a t i v e Co n t r o l
- - - P r o p o r t i o n a l I n t e g r a l C o n t r o l
- - - P r o p o r t i o n a l I n t e g r a l D e r i v a t i v
e C o n t r o l
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Hardware for a process Control System
- - - Ch e m i c a l P r o c e s s
- - - u u
- - - T r a n s d u c e r s
- - - T r a n s m i s s i o n l i n e s
- - - T h e Co n t r o l l e r
- - - T h e F i n a l Co n t r o l E l e m e n t
- - - R e c o r d i n g El e m e n t s
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Hardware for a process Control System
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Modelling and Simulation 6. Februar 2008 / Dr. Ing Naveed Ramzan
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