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Specialization project

Specialization project. Project title “Practical modeling and PI-control of level processes” Student Ingrid Didriksen Supervisor Krister Forsman. Objective. Level controllers in a chemical plant Obtain process models by use of historical data

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Specialization project

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  1. Specialization project • Project title “Practical modeling and PI-control of level processes” • Student Ingrid Didriksen • Supervisor Krister Forsman

  2. Objective • Level controllers in a chemical plant • Obtain process models by use of historical data • Obtain better tuning for the PI-controllers • Apply theory in practice

  3. The Problem • Poor tuning in level controllers Kcand τI for all thelevelcontrollers

  4. Why? • Problem with poor tuning • Oscillations Process output and set point

  5. Desired • Smooth control • Buffer tanks

  6. How? • Integrating process, • Matlab System Identification toolbox

  7. Process model

  8. How? • Arrest time Disturbance in inflowDeviation in process output

  9. Tuning

  10. Simulation No time delay Process output and set point Process input

  11. With “time delay” Process output and set point Process input

  12. Retuning Process output and set point Process input

  13. Furturework • Conciderdynamicsofthelevelcontrollers

  14. Thank you for yourattention!

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