Control system design

Part I – Discrete time System Analysis (~10 hours)

1) Definition and Basic Properties of Systems - Definition of systems, representations of systems linear systems, their relationship and some notions on realizations. Zero Input Response and Zero State Response

2) Lyapunov stability – Definition of Stability, Local and Global Attractivity, Asymptotic Stability. Lyapunov direct Method, Krasovskii-Lasalle, Stability for LTI systems, Lyapunov indirect method, Relationship between Internal Stability and BIBO stability

3) Reachability:Definitions of Reachability and Controllability. State Feedback Control and Stabilizability.

4) Observability: - Definitions of Observability and Reconstructability. State Estimation and Observers. Detectability. Dynamical Compensator.

Part II - Sample Data System Analysis (~4 hours)

1) Sampled Data Systems: Sampling, Shannon Theorem, Reconstruction, Sampling of a System and related issues (antialiasing, sampling time, etc)

Part III - Discrete Time and Sample Data System Synthesis (~10 hours)

1) "Classical" Synthesis methods for sampled data systems: Specifications, Padé approximation, Discretization of continuous time controller, Discrete Time Root Locus, Discrete Time PID.

2) "Industrial" control scheme: Cascade and Feedforward Schemes, the internal model principle.

3) System with Saturations: Anti-windup schemes, Introduction to Model Predictive Control

The goals of this course are:

1) to give the methodological basis for the analysis both of discrete time system and of sampled data systems

2) to detail some of the techniques that may be used to control them

3) to make the student able to implement the above knowledge in the control of a real plant

Required and Corequired knowledge and skills

It is fundamental a good understanding of basic linear algebra (Vector and Matrix operations, Vector Spaces and Subspace, Span/Image and Kernel/NullSpace of a matrix, eigenvalues, diagonalization, solution of linear systems) 

Basic automatic control (transfer function, the concept of feedback, basic control in the frequency domain)

Courses requiring this course

Lectures: Ex cathedra teaching using slides and blackboard. 

Exercise Sessions: Individual exercises to fix the theoretical concept. The main goal of exercise is to be better understand the theory. Exercise will be done with the help of Matlab and will guided by the professor and the assistant.

Laboratory: Students will work in teams of 2-4 people. Each team will work on a plant. The goal is to makes use of the techniques shown in the lectures to control the plant in the most appropriate way.

Contribution to the teaching profile

This teaching unit contributes to the following competences:

• In-depth knowledge and understanding of exact sciences with the specificity of their application to engineering

• In-depth knowledge and understanding of integrated structural design methods in the framework of a global design strategy

• In-depth knowledge and understanding of the advanced methods and theories to schematize and model complex problems or processes

• Reformulate complex engineering problems in order to solve them (simplifying assumptions, reducing complexity)

• Present and defend results in a scientifically sound way, using contemporary communication tools, for a national as well as for an international professional or lay audience

• Work in an industrial environment with attention to safety, quality assurance, communication and reporting

• Develop, plan, execute and manage engineering projects at the level of a starting professional

• Think critically about and evaluate projects, systems and processes, particularly when based on incomplete, contradictory and/or redundant information

• A creative, problem-solving, result-driven and evidence-based attitude, aiming at innovation and applicability in industry and society

• A critical attitude towards one’s own results and those of others

• Consciousness of the ethical, social, environmental and economic context of his/her work and strives for sustainable solutions to engineering problems including safety and quality assurance aspects

• The flexibility and adaptability to work in an international and/or intercultural context

• An attitude of life-long learning as needed for the future development of his/her career

• Has a profound knowledge of either (i) nano- and opto-electronics and embedded systems, (ii) information and communication technology systems or (iii) measuring, modelling and control.

• Is able to model, simulate, measure and control electronic components and physical phenomena.

References, bibliography, and recommended reading

[1] www.gprix.it

[2] Chi-Tsong Chen, Linear System Theory and Design

[4] Hassan K. Khalil, Nonlinear Systems

[5] Katsuhiko Ogata : Discrete-Time Control Systems

[6] K.J. Astrom, B. Wittenmark, Computer Controlled Systems, Theory and Design

Course notes

• Syllabus

Additional information

To ensure access to all students, the material of the course will be uploaded on the website www.gprix.it (teaching)
 

Contacts

Emanuele Garone, Service d'automatique et d'analyse des systèmes. Bât. L, porte E, 1er étage. egarone@ulb.ac.be

Campus

Solbosch, Plaine

Method(s) of evaluation

• written examination
• Group work

written examination

Group work

Laboratory : Lab Experience Report + 20-30 minutes talk on the obtained results (Assessment: from 0 to 20)

Theory and Exercises : Written Exam (Assessment: from 0 to 22, minimum of 7 required to pass)

Mark calculation method (including weighting of intermediary marks)

Theory and Exercises: 66.66 %

Laboratory Mark : 33.33 %

 

Language(s) of evaluation

• english