PROCESS CONTROL GROUP

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PROCESS CONTROL GROUP

• Dept. of Chemical Engineering
• NTNU, Trondheim

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RESEARCH

• Plantwide control and optimization (including
  self-optimizing control)
• Feedback as a tool to reduce the effect of
  uncertainty (including robust control)
• Controllability of processes (achievable control
  performance)
• Control structure design (including decentralized
  control)
• Model-based control system design
• Design and control of distillation processes
  (continuous and batch)
• Stabilization of chemical processes and fluid
  flow

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Graduated Ph.D. students

• 1. Thor Mejdell, Estimators for product
  composition in distillation columns, Nov. 1990.
• 2. Elling W. Jacobsen, Studies on dynamics and
  control of distillation columns, Dec. 1991.
• 3. Morten Hovd, Studies on control structure
  selection and design of robust decentralized and
  SVD controllers, Oct. 1992.
• 4. Knut W. Mathisen, Integrated design and
  control of heat exchanger networks , April 1994.
• 5. Erik A. Wolff, Studies on control of
  integrated plants , July 1994.

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• 6. Eva Sørensen, Studies on optimal operation and
  control of batch distillation columns , Aug. 1994
• 7. H. Petter Lundström, Studies on robust
  multivariable control of distillation columns ,
  Aug. 1994.
• 8. John C. Morud, Dynamics and control of
  integrated plants with reactors , Apr. 1996.
• 9. Ying Zhao, Studies on modeling and control of
  continuous biotechnical processes , Aug. 1996.
• 10. Atle C. Christiansen, Studies on optimal
  design and operation of integrated distillation
  arrangements , Jan. 1998.

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• 11. Kjetil Havre, Studies on controllability
  analysis and control structure design , Feb.
  1998.
• 12. Bernd Wittgens, Experimental verification of
  dynamic operation of continuous and multivessel
  batch distillation , Dec. 1999.
• 13. Truls Larsson Studies on plantwide control ,
  Aug. 2000.
• 14. Eva-Katrine Hilmen Separation of azeotropic
  mixtures Tools for analysis and studies on batch
  diatillation operation , Des. 2000.

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Present Ph.D. students

• 1. Vidar Alstad (Siv.ing. Chem.Eng., NTNU, 1999),
  Petronics
• 2. Hilde K. Engelien (M.S. Univ. of Surrey, UK,
  1997), Optimal design and operation of process
  integrated distillation columns
• 3. Pål Flatby (Siv.ing. Chem.Eng., NTNU, 1986),
  Dynamics and control of distillation processes.
  (presently at Statoil)
• 4. Audun Faanes (Siv.ing. Engineering
  Cybernetics, NTNU, 1990), Controllability
  analysis and control structures. (presently at
  Norsk Hydro)
• 5. Marius S. Govatsmark (Siv.ing., NTNU, 1995),
  Integrated optimization and control - plantwide
  control

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• 6. Ivar J. Halvorsen (Siv.ing. Engineering
  Cybernetics, NTNU, 1982), Control and
  optimization of complex industrial processes.
• 7. Tore Lid (Siv.ing., Engineering Cybernetics,
  NTNU, 1991), Integrated optimization and control
  with application to crude oil distillation
• 9. Sholeh MaMum (M.Sc., Yogyakarta Univ, 2000),
  Plantwide control.
• 9. Efstsathios Skouras (Dipl.ing., NTU, Athens
  1997), Distillation.
• 10. Espen Storkaas (Siv.ing., NTNU kjemiteknikk,
  1999), Operation of chemical processes in
  unstable regions.
• 11. Mari Undeli (Siv.ing., NTNU kjemiteknikk,
  1999), Petronics.

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PLANTWIDE CONTROL
Sigurd Skogestad Norwegian University of Science
and Technology
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Outline
1. About Norway and Trondheim 2. About my
Department 3. About my group 4. Plantwide
control - control structures 5. Self-optimizing
control 6. Example Tennessee Eastman process 7.
Stabilizing control - Pole vectors 8.
Controllability analysis 9. Feedback - The
forgotten trick 10. Distillation column control
and dynamics 11. The worlds simplest PI-tuning
rules.