Advanced Process Control: Beyond Single Loop Control

Advanced Process Control: Beyond Single Loop Control

By: Cecil L. Smith (author)Hardback

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This book fills the gap between basic control configurations (Practical Process Control) and model predictive control (MPC). For those loops whose performance has a direct impact on plant economics or product quality, going beyond simple feedback or cascade can improve control performance, or specifically, reduce the variance about the target. However, the effort required to implement such control technology must be offset by increased economic returns from production operations. The economic aspects of the application of the various advanced control technologies are stressed throughout the book.

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Chapter 1. Introduction.

1.1. Implementing Control Logic.

1.2. Control Blocks for Process Control.

1.3. PID Controller.

1.4. Integrator or Totalizer.

1.5. Lead-Lag Element.

1.6. Dead Time.

1.7. Selector Block.

1.8. Cutoff Block.

1.9. Hand Station.

Chapter 2. Cascade Control.

2.1. Jacketed Reactor.

2.2. Block Diagrams.

2.3. Problem Element.

2.4. Cooling Media Disturbances.

2.5. Effect of Varying Heat Transfer Rate.

2.6. Cascade Control Modes.

2.7. Remote Set Point.

2.8. Output Tracking.

2.9. Control Modes.

2.10. Interacting Stages.

2.11. Tuning Cascades.

2.12. Windup in Cascade Controls.

2.13. Integral Tracking.

2.14. External Reset.

2.15. Inhibit Increase / Inhibit Decrease.

Chapter 3. Split Range Control.

3.1. Storage Tank Pressure Control.

3.2. Split Range.

3.3. Temperature Control Using Liquid Bypass.

3.4. Recirculating Jacket with Heat and Cool Modes.

Chapter 4. Override Control.

4.1. Limit on Cooling Water Return Temperature.

4.2. Example without Windup Protection.

4.3. Integral Tracking.

4.4. External Reset.

4.5. Inhibit Increase / Inhibit Decrease.

4.6. Limits on Heat Transfer.

4.7. Other Examples.

Chapter 5. Valve Position Control.

5.1. Polymer Pumping Example.

5.2. Terminal Reheat Systems.

5.3. Equilibrium Reaction.

5.4. Reactor with Once-Through Jacket.

Chapter 6. Ratio and Feedforward Control.

6.1. Simple Ratios.

6.2. Ratio Control in Digital Systems.

6.3. Feedback Trim.

6.4. Dynamic Compensation.

6.5. Ratio-plus-Bias.

6.6. Characterization Function.

6.7. Cross-Limiting.

6.8. Directional Lags.

6.9. Feedforward Control.

6.10. Feedforward Control Example.

Chapter 7. Loop Interaction.

7.1. Multivariable Processes.

7.2. Issues with the P&I Diagram.

7.3. Steady-State Sensitivities or Gains.

7.4. Quantitative Measures of Interaction.

7.5. Loop Pairing.

7.6. Starch Pumping System.

7.7. Reducing the Degree of Interaction.

Chapter 8. Multivariable Control.

8.1. Decoupler.

8.2. Dead Time Compensation.

8.3. Model Predictive Control (MPC).

Product Details

  • publication date: 23/07/2010
  • ISBN13: 9780470381977
  • Format: Hardback
  • Number Of Pages: 450
  • ID: 9780470381977
  • weight: 826
  • ISBN10: 0470381973

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