Tips Menyederhanakan Diagram Blok

Ir. Abdul Wahid Surhim, MT.

Sistem Pengendalian 2 CSTR

T

14.2

/ 2.1

)(

)()(

3

0

1tank1

s

mK

sF

sTsG

11.3

/ 2.1

)(

)()(

1

2tank2

s

KK

sT

sTsG

openm

ssv

sFsGvalve %

13.0

1.0

)(

)()(

30

KK

sT

sTsG measured

sensor

/ 0.1

)(

)()(

2

Mengubah kedalam Diagram Blok

• Diagram Blok Umum (Set-point)

GC

CV(s)

CVm(s)

SP(s)E(s) MV(s)+

- GvGp

Gs

)().().().(1

)().().(

)(

)(

sGsGsGsG

sGsGsG

sSP

sCV

spvc

pvc

Mengubah kedalam Diagram Blok

• Diagram Blok Umum (Set-point)

• Pengendali : Proportional Gc = Kc

• Control Valve : • Proses :

• Sensor : Gs = 1

GC

CV(s)

CVm(s)

SP(s)E(s) MV(s)+

- GvGp

Gs

13.0

1.0

sGv

)11.3)(14.2(

44.1

11.3

2.1

14.2

2.1. 2tan1tan

ssss

GGG kkp

Memasukkan Fungsi Alih kedalam Diagram Blok

• Diagram Blok Set-Point

KC

1

CV(s)

CVm(s)

SP(s)

E(s)MV(s)

+

- 13.0

1.0

s )11.3)(14.2(

44.1

ss

Fungsi Alih

c

c

c

c

Ksss

K

sSP

sCV

sssK

sssK

sSP

sCV

144.0)14.2)(11.3)(13.0(

144.0

)(

)(

)1()14.2)(11.3(

44.1

13.0

1.01

)14.2)(11.3(

44.1

13.0

1.0

)(

)(

)(

)(

sSP

sCV

KC

1

CV(s)

CVm(s)

SP(s)

E(s)MV(s)

+

- 13.0

1.0

s )11.3)(14.2(

44.1

ss