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Topic 4

Topic 4. Controller Actions And Tuning. In The Last Lecture…. Controller tuning methods Cycling method Step change method Trial and error method Lambda method for integrating processes. Topic 1 Introduction To Process Control. Topic 2 Introduction To Process Dynamics. Topic 3

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Topic 4

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  1. Topic 4 Controller Actions And Tuning

  2. In The Last Lecture… • Controller tuning methods • Cycling method • Step change method • Trial and error method • Lambda method for integrating processes

  3. Topic 1 Introduction To Process Control Topic 2 Introduction To Process Dynamics Topic 3 Plant Testing And Data Analysis Topic 4 Controller Actions And Tuning Topic 5 Enhanced Regulatory Control Strategies Topic 6 Process Control Hardware Systems Topic 7 Control Valves Topic 8 Process Control Troubleshooting What We Will Cover

  4. In This Lecture… • Determining Good Control Performance • IAE • ISE • ITAE

  5. What is good control performance? • We have been about getting the best controller tuning parameters • What will the best controller tuning parameters give us?

  6. Which is the best?

  7. Integral of Absolute Value of Error

  8. Integral of Absolute Value of Error

  9. Having Properly Defined Performance Criteria • Having properly defined performance criteria is important • To remove subjectivity in controller tuning • For optimisers to know what to measure itself against

  10. Integral of Squared Error • Removes need of having to worry about positive or negative areas • Punishes large errors

  11. Integral of Time-Weighted Absolute Error • Punishes errors that stay for very long

  12. In This Lecture… • Determining Good Control Performance • IAE • ISE • ITAE

  13. In The Next Lecture… • Plant Testing • Data Analysis

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