DEPARTMENT OF CHEMICAL ENGINEERING

CHE 401 Process Dynamics and Control

Fall Term - 052 Instructor: Dr. Basel Abu-Sharkh Lectures section 2: SMW 11-11:50 AM bldg 4/258, Office: 16-240 Office Hours 9: 00 to 10:00 AM Saturday, Monday and Wednesday Tel: 2744 Email: sharkh@kfupm.edu.sa Internet: users.kfupm.edu.sa/che/sharkh Textbook: Process Dynamics & Control, by Dale E. Seborg, Thomas F. Edgar,

and Duncan A. Mellichamp, Wiley, New York (2003) Ref. Books: Principles and Practice of Automatic Process Control, by C.A.

Smith and A.B. Corripio, Wiley (1985) Chemical Process Control, by G. Stephanopolous Prentice Hall,

New Jersey (1984) Process Dynamics, Modeling and Control, Babatunde A. Ogunnaike

and W. Harmon Ray, Oxford University Press, New York, 1994 Process Control, 2nd, ed., Thomas E. Marlin, McGraw-Hill, USA,

2000 Prerequisite: SE 301 Numerical Methods, CHE 306 Equilibrium Separations Corequisite: CHE 402 Kinetics and Reator Design Objective: Develop students concepts of dynamics and control of systems.

Dynamics and modelling of linear first and second order systems.Linearization of non-linear systems. Modes of Control. Stability studies, frequency response analysis, Nyquist and Bode diagrams. Tuning a controller. Use of Control toolbox and Simulink in MATLAB. Advanced control strategies such as feedforward, cascade and ratio control.

Examination Schedule: 1st Major Examination 2nd Major Examination Grading System:Two Major Examinations 43% Homework ( 7 to 9 assignments) 5% Quizes 8% Computer Assignments 4% Final Examination 40% Total: 100% Assignments: There will be one (homework or computer assignment) every week

except examination weeks.

Course Outline Lectures Homework Introduction 1 Ch1. Introduction to Process Control 1 Ch 2. Mathematical Modelling of Chemical Processes Secs. 2-2 to 2-5 Omit pps. 29 to 34

2 2.3, 2.5

Ch 3. Laplace Transforms - Secs. 3-1 to 3-4 Students study example 3-5

4 3.4, 3.6, 3.12, 3.16

Ch 4. The Transfer Function. Sec. 4-1 to 4-3Omit Examples 4-2 and 4-7

2 4.2, 4.6, 4.13

Ch 5. Dynamic Behaviour of 1st and 2nd Order Systems. 5-1 Standard Process Inputs 5-2/3 Response of 1st Order Systems 5-4 Response of 2nd Order Systems

5 5.3, 5.8, 5.14, 5.18

Ch 6. Dynamic Response Characteristics of More Complicated Systems 6-1 Poles and Zero's and their effect on System Response, Lead-Lag element 6-2 Time Delays 6-3 Approximation of Higher Order System 6-4 Interacting and Noninteracting SystemOmit 6-5 to 6-7

3 6.2, 6.4, 6.9,

Ch 7. Development of Empirical Dynamic Models from Step Response Data 7-2 Graphical Fitting of 1st Order Models using Step Tests7-3 Fitting 2nd Order models using step test

2 7.2

Ch 8. Feedback Controllers: 8-2 Controllers -Proportional Control Integral Control Reset Windup Derivative Control Reverse or Direct Action Typical Response of Feedback Control Systems 8-3 Digital Versions of PID controller

4 8.3, 8.4

Ch 9. Control System Instrumentation Standard Instrumentation Symbols Levels Transmitters Final Control Elements Sizing Control Values

2 9.1, 9.2, 9.4

Ch 10. Dynamic Behaviour of Closed Loop Control Systems

10-1 Block Diagram Representation 10-2 Closed Loop Transfer Functions 10-3 Closed Loop Responses of Simple Control Systems

4 10.4, 10.8, 10.5, 10.9

Ch 11. Stability of Closed-Loop Control Systems Introduction 11-1 General Stability Criterion 11-2 Routh Stability Criterion 11-3 Direct Substitution Method Omit 11-4

3 11.2, 11.5, 11.9

Ch 12. Controller Design Based on Transient Response Criterion

2 12.1, 12.3

12-1 Performance Criteria 12-2 FOPDT & SOPDT models 12-4 Design Relations for PID controllers Ch 13. Controller Tuning 13-1/2 Guidelines, Trial and Error 13-3 Continuous Cycling Method, Z-N 13-4 Process Reaction Curve Method

1 13.1, 13.3

Ch 14. Frequency Response Analysis 14-1/2 Sinusoidal Forcing 14-3 Bode Diagrams

4 14.1, 14.3, 14.8, 14.13

Ch 15. Controller Design Using Frequency Response Criteria

16-1 Frequency Response Characteristics of Feedback Controller

16-2 Bode of Nyquist Stability Criteria 16-3 Effect of Controller on Open Loop Frequency

Response 16-4 Gain and Phase Margins 16-5 Closed Loop Frequency Response

4 16.2, 16.4, 16.9