Signals and Systems
Keywords |
Classification |
Keyword |
OFICIAL |
Basic Sciences for Electrotechnology |
Instance: 2009/2010 - 2S
Cycles of Study/Courses
Acronym |
No. of Students |
Study Plan |
Curricular Years |
Credits UCN |
Credits ECTS |
Contact hours |
Total Time |
MIEEC |
89 |
Syllabus since 2007/2008 |
2 |
- |
8 |
87 |
213 |
Teaching language
Portuguese
Objectives
The main aim of this course unit is to endow students with core engineering fundamental knowledge (CDIO Syllabus 1.2 and 1.3) related to:
• continuous time systems (time, frequency and state space analysis)
• feedback systems
• control systems
This course unit also aims to develop students’ personal and professional skills at the level of engineering reasoning, problem solving, experimentation, knowledge discovery, system thinking and personal skills and attitudes (CDIO Syllabus 2.1, 2.2, 2.3 and 2.4).
Program
1. Time-invariant systems analysis
Causal systems; Unilateral Laplace transform; Systems described by differential equations; Electric circuits: domain analysis; Transfer function: poles and zeros; Time response of time-invariant systems; First and second order systems; Dominant poles and higher order systems.
2. Time-invariant systems analysis in frequency
Sinusoidal steady state response to entries; Frequency response; Polar plots; Bode plots; Base elements and asymptotic plots; Real and complex poles and zeros; Classification of systems as filters; Main characteristics of a filter; Introduction to filter design
3. Time-invariant systems analysis in state spaces
Differential equations systems; Matrix representation; State spaces; Modal trajectory analysis;
4. Feedback systems
Interconnection of systems; Block diagram algebra; Structure of a feedback system; Performance and stability; Criteria and tools to analyse stability; Stability boundaries
5. Introduction to compensation
Compensation structures: feedback and feed-forward; Design of compensators: objectives and tools; Phase feedback and feed-forward; Elementary actions of control: proportional, integral and derivative; PID controllers.
Mandatory literature
Ribeiro, Maria Isabel;
Análise de Sistemas Lineares. ISBN: 972-8469-13-6
Lourtie, Isabel M. G.;
Sinais e sistemas. ISBN: 972-592-130-5
Carvalho, Jorge Leite Martins de;
Sistemas de controle automático. ISBN: 85-216-1210-9
Complementary Bibliography
D.Azzo, John Joachim;
Linear Control System Analysis and Design. ISBN: 0-07-066251-7
Ogata, Katsuhiko;
Modern Control Engineering
Teaching methods and learning activities
Theoretical classes: Presentation of the program; Presentation and analysis of examples;
Theoretical-practical classes: Resolution of exercises and by the professor and students; Answer to students’ questions and doubts.
Software
Matlab 6 R12.1
keywords
Technological sciences > Engineering > Systems engineering > Systems theory
Technological sciences > Engineering > Systems engineering > Systems theory
Evaluation Type
Distributed evaluation with final exam
Assessment Components
Description |
Type |
Time (hours) |
Weight (%) |
End date |
Attendance (estimated) |
Participação presencial |
80,00 |
|
|
midterm exams |
Exame |
2,00 |
|
2010-05-19 |
Final exam |
Exame |
2,00 |
|
2010-07-23 |
Study along the semester and preparation for exam |
Exame |
132,00 |
|
2010-07-23 |
|
Total: |
- |
0,00 |
|
Eligibility for exams
To be admitted to exams, students:
- cannot miss more theoretical-practical classes than allowed by the rules;
- have to reach a minimum grade of 25% in the continuous assessment component.
Calculation formula of final grade
Ordinary students: Final Grade (F) will be based on the following formula: F=0.6E + 0.4CA, being E the final exam and CA the continuous assessment.
Students who do not need to attend classes: Final Grade (F) will be the result of the Final Exam (E).
Comment: To reach a higher grade than 18 (out of 20), students have to attend an oral exam, which will take place at the end of the season of exams.
Examinations or Special Assignments
Continuous assessment comprises two mini-tests (1 hour each). Continuous assessment grade will be based on the average grade of these two tests. If students miss one of the mini-tests, they will earn a 0.
Special assessment (TE, DA, ...)
Students with a special status and who do not need to attend classes (according to line a) and b) of Article 4 of General Evaluation Rules of FEUP), have to attend an exam.
Exams for students who can attend exams at special seasons (line 5 of Article 6 of General Evaluation Rules of FEUP) may comprise an oral component. Students will be informed beforehand.
Classification improvement
Final exam
Observations
Students, who attended this course unit last year, will be assessed only based on the final exam. However, they can attend classes again. They need to enrol in theoretical-practical classes and attend the mini-tests. This decision is irreversible.