Assignment 5 Solutions 2009

p i d p d a i a r w d o f f f o

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ive us the fo llowing responses Figure 18: Closed­loop response for set­point change (kC= ­1.935 and tI = 2.5) Figure 19: Closed­loop response for disturbance change (kC= ­1.935 and tI = 2.5) To analyze the effect of the controller parameters we made a change in the Integral Time constant. For the same controller gain as before but with tI = 1 we obtain the responses given below Figure 20: Closed­loop response for set­point change (kC = ­1.935 and tI = 1) Figure 21: Closed­loop response for disturbance change (kC = ­1.935 and tI = 1) Finally, the previous controllers were implemented in the Control Station plant to validate the design settings in the nonlinear environment. The Figures below illustrate the performance of the controllers. C o n t ro l S t a t io n : C a s e S t u d ie s Pr o c e s s Va r ia b le /Se tp o in t P r o c e s s : H e a t E x c h a n g e r C o n t . : P I D ( P = D A , I = A R W , D = o f f , F = o f f ) 146 145 144 143 142 141 140 Cont r oller Out put 40.0 37.5 35.0 32.5 30.0 27.5 36 39 42 45 48 51 54 Time ( mins ) 57 60 63 66 69 T u n i n g : G a i n = ­ 1 . 9 4 , R e s e t T i m e = 2 . 5 0 , S a m p le T i m e = 1 . 0 0 Figure 22: Closed­loop response ( in CStation) for set point change (kC = ­1.935 and tI = 2.5) C o n t ro l S t a t io n : C a s e S t u d ie s Cont r olle r Out p ut Pr o c e s s Va r i a b l e /Se tp o in t P r o c e s s : H e a t E x c h a n g e r C o n t . : P I D ( P = D A , I = A R W , D = o f f , F = o f f ) 14 0 40 .0 87 9 0 9 3 9 6 99 10 2 Time (mins ) 10 5 108 1 11 1 14 11 7 T u n i n g : G a i n = ­ 1 . 9 4 , R e s e t T i m e = 2 . 5 0 , S a m p l e T i m e = 1 . 0 0 Figure 23: Closed­loop response ( in CStation) for disturbance change (kC = ­1.935 and tI = 2.5) C o n t ro l S t a t io n : C a s e S t u d ie s Pr o c e s s Va r i a b l e /Se tp o in t P r o c e s s : H e a t E x c h a n g e r C o n t . : P I D ( P = D A , I = A R W , D = o f f , F...
View Full Document

This note was uploaded on 01/12/2014 for the course CHE 4198 taught by Professor Hjortso,m during the Fall '08 term at LSU.

Ask a homework question - tutors are online