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Controlo Discreto e Digital

Código 15377
Ano 1
Semestre S2
Créditos ECTS 6
Carga Horária PL(15H)/T(30H)/TP(15H)
Área Científica Informática, Automação e Controlo
Mode of delivery Face-to-face
Work placements Not applicable
Learning outcomes This Course Unit aims to introduce the modelling techniques, stability analysis techniques, and the response time and frequency characteristics of discrete and digital systems. Also are introduced the design methods of digital controllers to meet the required specifications.
At the end of the course unit the student should be able to:
- Identify different types of discrete and digital systems;
- Apply the concepts, principles, equations and calculation techniques for modelling discrete systems;
- Evaluate the characteristics of time and frequency response of discrete systems;
- Use computational tools for modelling, analysis and design of discrete systems;
- Implement design methods of discrete control systems;
- Create a research vision of the application of these control concepts in several domains;
- Get involved actively in this area stimulating solutions but also in technical and project levels.
Syllabus 1. Introduction
2. Discrete signals and systems: Transformation methods and z transform.
3. Sampling and Reconstruction: Samplers and Signal Reconstruction
4. Open Loop Systems
4.1. Transfer function
4.2. Digital filters
4.3. The modified z transform
5. Closed Loop Systems
5.1 Transfer Function
5.2 Basic concepts and derivation procedure
5.3 State variable models
6. Time response characteristics of discrete systems
6.1. Time response and Characteristic equation
6.2. Mapping s-domain into z-domain
6.3. Accuracy
6.4. Simulation
7. Methods for stability analysis in z domain
7.1. Stability analysis
7.2. Routh-Hurwitz’s criterion and Jury’s stability test
7.3. Root Locus
7.4. Bode diagrams
8. Design of digital controllers
8.1. Control system specifications
8.2. Compensation
8.3. PID controllers design
8.4. Design supported by approximation in Root Locus
Teaching Methodologies and Assessment Criteria In the laboratory work and homework assignments, there is interaction with the class in order to incorporate self-assessment components and to correct small deficiencies in the educational path of the student that can be identified.
65% {(1st Test + 2nd Test) or Exam}+ 20 % Exercises/Homework + 15 % Lab. Matlab/Design Assignment
Approval: Final mark equal or greater than 9.5.
Main Bibliography 1. Primary:
- S. Charles, L. Phillips and Troy Nagle Aranya Chakrabortty, Digital Control System Analysis & Design, Pearson, Boston, MA, USA, 2015.
- K. J. Astrom, B. Wittenmark, Computer-Controlled Systems: Theory and Design – 3rd Edition, Prentice-Hall, 2011.
- Gaspar, P.D., "Apontamentos de Controlo Discreto e Digital", Universidade da Beira Interior, 2010.
- Farid Golnaraghi and B. C. Kuo, “Automatic Control Systems,” 9th Edition, Prentice Hall, 2010.
- Dorsey, John, “Continuous and Discrete Control Systems: Modeling, Identification, Design, and Implementation – 1st Ed.”, McGraw Hill, 2002.
- Ogata, K., “Engenharia de Controlo Moderno – 5ª Ed.”, Pearson, 2010.
- Nise, Norman S., “Control Systems Engineering – 2nd Ed.”, Addison-Wesley, 1995.

2. Secondary:
- Van de Vegte, J., “Feedback Control Systems”, Prentice Hall, 1993.
- Houpis, C.H., Lamont, Gary B., “Digital Control Systems: Theory, Hardware, Software”, McGraw Hill, 1991.
Language Portuguese. Tutorial support is available in English.

Regente

Imagem d@ Fernando José da Silva Velez [Ficheiro Local]
 Fernando José da Silva Velez

Curso

Engenharia Eletrotécnica e de Computadores
Data da última atualização: 2025-03-09
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