אאאאאא

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٢٦٧٢٦٧

א ٢٦٧

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،،אא،אW

אא א א א אאאאאא،אאאאאאא

אאאא אאאאאאאWא

אאK

אאאאאאא א ،א אא

אאאאאא،אאא א ،א אא א א אא א א א א א א א

אא،אאאא،אK

א א ? אאאאFE ?? ?אא אאא אא

אK

אאאאאאא،א ،א א אא

Kאאאאא

؛ א אא אאK

אאאא

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א

אא

א

א

א

١

א ٢٦٧ אא אאאאFE אא

- ١ -

אאאאאא אאW

אאאאאאאאאאאאSol 1 K אאW

١K אאאאאאK ٢K אFPCT 40EK ٣K אא ٤K view diagram K ٥K Level switch(Float) ٦K אSol2 ٧K אאאאK ٨K אא١٠א ٩K GO אאאאא130mm

١٠K אאאאא170mm ١١K א٩אאW200mm250mm ١٢K אאאאאאאstop ١٣K אאK

رسم جهاز التحكم بمستوى السائل عن طريق األقطاب . والعوامة

min max

العوامة

األقطاب

SOL

170mm control

אאאאאאאאאא

אאאאאאאאFFEE

אא

א

א

א

٢

א ٢٦٧ אא אאאאFE א

- ٢ -

אאאאא

אאW אאאאאאאאאא

אSol 1 K

אאW ١K אאאאאא ٢K אFPCT 40E ٣K אא ٤K אאFDifferential LevelKE ٥K Sol 1א ٦K אאFSol 2E ٧K אא ٨K אאאאK ٩K אא١٠א

١٠K אא200mmאאאGO ١١K אאאאאאא

אSol1K ١٢K אאSol2 אאא

١٣K אאאFEאFEאאא

אא

א ٢٦٧ אא אאאאFE א

- ٣ -

١٤K אאאאא ١٥K 290mmא250mm

א ١٦K א270mm אאא

אא270אmm ١٧K אאאאאStopא ١٨K אאא

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- ٤ -

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אאאW ١K אאאאאא ٢K אFPCT 40KE ٣K אא ٤K אControl ٥K אא١٠א ٦K Controlאא١٠٠OK ٧K א١٥٠אאאGO ٨K א٢٠٠אאאאא

אאאאא200mm ٩K אאאאאאא

١٠K אאאStop ١١K אאאאא

אאאW ١K אאאאאא ٢K ControlאAutoא200mm

OK ٣K אאSOL 2 ٤K אאא200mmאאאאStop ٥K אאא

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- ٥ -

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אאאאאא

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אאW ١K אאאאאא ٢K אFPCT 40KE ٣K אאאא ٤K אא١٥ ٥K אSol2 אSol3 ٦K controlאאset point200mm

אאAutoApply OK ٧K א١٥٠אאאGO ٨K אאאא

אאאאStop ٩K אאאאאאPID

١٠K אPIDאcontrolאאאאא ١١K א١٥٠אאאGO ١٢K אאאאאא ١٣K אאאאStop ١٤K אא ١٥K אאאאאאPID

א ٢٦٧ אאא אאאאFE אאאאאא

- ٦ -

אPID:P=y/3 , I=x , D=x/6

W

xWא yWא

- ٦ -

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- ٧ -

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אאWאאאאא

אאFPump AEK

אאW١ J אאאאאא ٢ J אFPCT 40KE ٣ J אאא ٤ J אא١٥ ٥ J אSol2 אSol3 ٦ J אאאאאAא ٧ J controlאאset point

200mmאאAutoApply OK ٨ J א١٥٠אאאGO ٩ J אא

אאאאאאStop ١٠ J אאאאאאPID ١١ J אPIDאcontrolאאאאא ١٢ J א١٥٠אאאGO ١٣ J אאאאאא ١٤ J אאאאStop ١٥ J אא ١٦ J אאאאאאPID

- ٦ -

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א

א

א

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א ٢٦٧ אא אאאאFE אאא

- ٨ -

אאא

אאW

١ JאאאK ٢ JאאK ٣ JאאK

אW

GPCvQ ∆=

QZאK PZאK GZאאK

CvZאאK

אאW ١K אאאאאא ٢K אFPCT 40KE ٣K אאא ٤K אא١٥ ٥K אSol2 אSol3 ٦K אאאא ٧K אא ٨K אאאא ٩K א٣

א ٢٦٧ אא אאאאFE אאא

- ٩ -

• אאW

Sol 3LCvQ = L

QCv = L L ( mm ) Q ( L / min)

Sol 2

LCvQ = LQCv = L L ( mm ) Q ( L / min )

- ٦ -

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אאאאאאאאFFEE

א

אFPE

٧

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- ١٠ -

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אאW

אאFProportional BandEאאאPK

אאW

١K אאאאאא ٢K אFPCT 40KE ٣K אאאא ٤K אא١٥ ٥K אSol2 אSol3 ٦K controlאאset point200mm ٧K אP٥אא ٨K אAutoApplyOK ٩K א١٥٠אאאGO

١٠K אאאאא ١١K אאאאאאאאP٤٠ ١٢K אאאP=0, 5 , 40אא

- ٦ -

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אאאאאאאאFFEE

א

אFIE

٨

٢٦٧ א אא

אאאאFE אאFIE

- ١١ -

אאFIE

אאW

אאFIntegral TimeEאאאIא אP

אאW

١K אאאאאא ٢K אFPCT 40KE ٣K אאאא ٤K אא١٥ ٥K אSol2 אSol3 ٦K controlאאset point200mm ٧K אP٥אI= 30 ٨K אAutoApply ok ٩K א١٥٠אאאGO

١٠K אאאאא ١١K אאאאאאאאI٥٠٧٠ ١٢K I=0, 30 , 50, 70אא

אאאאאא

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א

א

א

٩

٢٦٧ א אא

אאאאFE אאא

- ١٢ -

אאא

אאW אאאאאK

אאW ١K אאאאאא ٢K אFPCT 40KE ٣K א٦אא ٤K אא١٥ ٥K אאFPCT 40E ٦K אPSV 20% K ٧K אSP=50 ٨K GOאאא ٩K אאאאא

١٠K אאאאא ١١K אPID ١٢K אאאאאאאאא

٢٦٧ א אא

אאאאFE

אא

1. “Process/Industrial Instruments and Controls Handbook” Douglas M. Considine, 4 th Edition, Mc-Graw Hill Inc.

2. “Process Control Systems-Applications, Design and Tuning”, 3 rd

Edition, Mc-Graw Hill International, F.G. Shinsky, 1988.

3. “Principles and practice of Automatic Process Control”, Carlos, A. Smith, and Armando, B. Corripo, 1985, Jhon Wiley and Sons.

א ٢٦٧ א

אאאאFE

א

.................................................................. استخدام العوامةالتحكم بمستوى الخزان ب J١ J

................................................................. التحكم بمستوى الخزان باستخدام األقطاب J٢ J

........................................................................ مقارنة التحكم اليدوي والتحكم اآللي J٤ J

........................................................... التحكم بمستوى الخزان باستخدام الصمام اآللي J٨ J אאאא

KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKא J١٧ J

אאאKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK

K J٢٠ J אא

FPKKKKKEKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK J٢٤ J

אאFIKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKEKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK J

٢٧ J אאא

KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK J٣١ J