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SYST0011-1

Dynamics and control of chemical systems


Duration :15h Th, 15h Pr
Credits/ECTS :
5th year of the 5 year degree in civil engineering in chemist3
4th year of the 5 year degree in civil engineering in chemist for ""licenciées" in chemical sciences3
Holder(s) :Georges Heyen
Course contents : Dynamic modelling of chemical systems
Revision on Laplace transform
Flowchart analysis and transformation
Model linearisation
Identification of reduced models from a measured response curve
Transfer functions
Frequency response analysis, Bode diagram
Control actions : PID control
Stability of controlled systems
Tuning PID controllers
Influence of dead time on control quality
Synthesis based on stability : gain and phase margins
Feed forward control. Cascade control
Introduction to multivariable control : variable coupling, RGA analysis, decoupling.
Course objective : Introduction to practical methods used to control chemical processing operations (heat exchange, reactors, distillation)

Gaining notions allowing a chemical engineer to discuss with a control engineer
Prerequisites : Modelling of basic unit operations (reactors, heat exchangers) both in steady state and in dynamics

Solving differential equation systems (linear and non-linear)
Workshops : Illustration of concepts discussed during the lectures using simulations (Control Station software)

Identification of an approximate model from an experimental response curve.

Tuning the parameters of a PID controller; influence of parameters on control efficiency.

Some more complex control schemes : feedforward, cascade control, decoupling.
Organization : 2 hrs lecture and 2 hrs practice each week
Written notes : Recommended textbooks:

- T. Marlin, Process control (Designing Processes and Control Systems for Dynamic Performance), McGraw-Hill (1995)

- B. Wayne Bequette, Process Control: Modeling, Design and Simulation, Prentice Hall (2003).

Copy of presentations (photocopy and pdf)
Temporary license to use Control Station software
Assessment : Oral examination, after written preparation
Contacts : Georges Heyen
Institut de Chimie B6, room R68
Phone : 04 366 3521
FAX : 04 366 3525
Email : G.Heyen@ulg.ac.be
Remarks : see also : http://cheng00.chim.ulg.ac.be/users/gheyen




ULg : Students and Studies Administration - Academic Affairs
Contact : Monique Marcourt, direction A.E.E.
Date of data : 27/02/2006
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