Module Details
| Module Code: |
CHEP8004 |
| Title: |
Automatic Process Control
|
|
Long Title:
|
Automatic Process Control
|
| NFQ Level: |
Advanced |
| Valid From: |
Semester 2 - 2022/23 ( January 2023 ) |
| Field of Study: |
5240 - Chemical & Process Eng
|
| Module Description: |
Students learn about closed-loop transfer functions, stability, feedback control, feed forward control and advanced singe-loop applications.
Students then learn how to analyse and design multiple-input multiple-output control systems and how to apply this knowledge to automatic control systems.
|
| Learning Outcomes |
| On successful completion of this module the learner will be able to: |
| # |
Learning Outcome Description |
| LO1 |
Analyse, interpret and predict the stability of open and closed-loop systems and then characterise the dynamic behaviour of open-loop processes with a view to tuning simple Single-Input Single-Output systems. |
| LO2 |
Devise complex Process Control systems to improve the dynamic behaviour of difficult processes. |
| LO3 |
Manipulate control system simulation software using a sequence of self-study exercises. |
| LO4 |
Analyse Multiple-Input Multiple-Output systems. |
| LO5 |
Design systems to control process equipment and utility plant. |
| Dependencies |
Module Recommendations
This is prior learning (or a practical skill) that is strongly recommended before enrolment in this module. You may enrol in this module if you have not acquired the recommended learning but you will have considerable difficulty in passing (i.e. achieving the learning outcomes of) the module. While the prior learning is expressed as named MTU module(s) it also allows for learning (in another module or modules) which is equivalent to the learning specified in the named module(s).
|
| None |
Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. You may not earn additional credit for the same learning and therefore you may not enrol in this module if you have successfully completed any modules in the incompatible list.
|
| None |
Co-requisite Modules
|
| No Co-requisite modules listed |
Requirements
This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. You may not enrol on this module if you have not acquired the learning specified in this section.
|
| No requirements listed |
| Indicative Content |
|
1. Closed-Loop Behaviour:
Transfer functions; Laplace transforms and deviation variables; block diagrams open-loop & closed-loop transfer functions; open-loop & closed-loop steady-state input-output equation; P-I-D controller.
|
|
2. Stability and Characteristic Equation:
Poles and zeros; stability criterion; the Characteristic Equation (CE); plotting roots of CE on the complex plane; Right Hand Plane (RHP) zeros - inverse response; dead-time processes; Pade approximation;
|
|
3. Process Characterisation & Controller Tuning:
Process characterisation; Ziegler-Nichols closed-loop test method; Tyreus-Luyben empirical correlations; “step test”; Process Reaction Curve (PRC); FOPDT model approximation; minimum error integral criteria;
|
|
4. Frequency Response Analysis:
Frequency response concept; Bode stability criterion; Bode diagrams; gain and phase margin; Nyquist stability criterion; “non-minimum phase” concepts.
|
|
5. Alternate Feedback Schemes:
Cascade control; override control; selective control; split-range control; inferential control; adaptive control; case studies to include simplified P&IDs.
|
|
6. Feedforward-Feedback Control:
Ratio control; feedforward control; the static compensator; the lead-lag unit; the dead time compensator; the summation unit; feedforward-feedback control case studies to include simplified P&IDs.
|
|
7. Controller Synthesis
Controller synthesis to produce desired controller response trajectory; IMC based controllers and “physical realisability”; systems that exhibit inverse response; IMC empirical correlations.
|
|
8. Multiple-Input Multiple-Output Systems:
Degrees of freedom analysis; concept of interaction; relative-gain; Bristol Relative-Gain Array (RGA); pairing rules to minimise interaction; design of decouplers.
|
|
9. Control of Utility Plant:
Steam distribution systems; cooling water systems; pumps; refrigeration systems; case studies and analysis; design and critique of P&IDs; operating strategies.
|
|
10. Batch Process Control:
Fermenter and reactor temperature control including utilities; endpoint control of fermenters and batch reactors; control of highly exothermic reactions; wastewater control; downstream processes; case studies - analysis and criticism; design and critique of P&IDs; operating strategies; future trends in process control.
|
|
11. Process Analytical Technology:
Benefits of Process Analytical Technology (PAT); overview of on-line measurement techniques used in the process industries - temperature, moisture content, dissolved oxygen, near IR, particle size; applications of PAT to the process industries; case study options for on-line measurement including direct measurement and inferential techniques.
|
|
Module Content & Assessment
|
| Assessment Breakdown | % |
|---|
| Coursework | 20.00% |
| End of Module Formal Examination | 80.00% |
Assessments
| End of Module Formal Examination |
|
|
| Reassessment Requirement |
Repeat examination
Reassessment of this module will consist of a repeat examination. It is possible that there will also be a requirement to be reassessed in a coursework element.
|
The University reserves the right to alter the nature and timings of assessment
Module Workload
| Workload: Full Time |
| Workload Type |
Contact Type |
Workload Description |
Frequency |
Average Weekly Learner Workload |
Hours |
| Lecture |
Contact |
Lectures/discussions/case studies/class problem solving/class software exercises. |
Every Week |
3.00 |
3 |
| Lab |
Contact |
Control simulation laboratory. |
Every Second Week |
1.00 |
2 |
| Independent & Directed Learning (Non-contact) |
Non Contact |
Study/solving tutorial sheets/solving past-paper problems. |
Every Week |
3.00 |
3 |
| Total Hours |
8.00 |
| Total Weekly Learner Workload |
7.00 |
| Total Weekly Contact Hours |
4.00 |
| This module has no Part Time workload. |
|
Module Resources
|
| Recommended Book Resources |
|---|
-
Smith, C.A., Corripio, A.B.. (2023), Principles and Practice of Automatic Process Control, 4th. Wiley, New York, [ISBN: 9780470504802].
-
Seborg, D., Edgar, T.F., Mellichamp, D.. (2016), Process Dynamics & Control, 4th. Wiley, New York, p.512, [ISBN: 1119285917].
| | Supplementary Book Resources |
|---|
-
Luyben, W. L.. (2013), Distillation Design and Control Using Aspen Simulation, 2nd. Wiley, [ISBN: 9781118411438].
-
King, M.. (2016), Process Control, 2nd. Wiley, p.624, [ISBN: 978-111915774].
-
Shinskey, F.G.. (1996), Process Control Systems; Application, Design and Tuning, 4th. McGraw-Hill, New York.
| | This module does not have any article/paper resources |
|---|
| Other Resources |
|---|
-
e-Book, King, M.. (2016), Process Control - A Practical Approach,
2nd Ed., Wiley.
-
Software, Aspen Plus Dynamics®,
|
|
