- Docente: Maria Elisabetta Penati
- Credits: 6
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Bologna
- Corso: First cycle degree programme (L) in Engineering Management (cod. 0925)
Learning outcomes
The course intends to discuss the fundamental principles of functioning of open-loop automatic control systems and feedback automatic control systems.
Elementary techniques will be introduced, as to:
-analysis of the characteristics of the SISO stationary linear dynamic systems
-synthesis of feedback control systems
-methods of utilization of the main components (actuators and sensors) in control loops.
Course contents
1 General concepts:
- Historical notes. What automation is
- Concepts of material manipulation and symbolic manipulation
- Automatic control systems: open loop control and feedback control
- Examples of automatic control systems: position, velocity, level and temperature regulators.
2 Mathematical Models:
- The identification problem
- Parametric and non parametric identification techniques
- Differential equations (and equation systems); Laplace transforms and anti-transforms
- Transfer function and impulsive response function
- Mathematical models of linear and stationary systems of input-output and of input-state-output type.
3 Analysis in the time domain:
- Stability: Lyapunov and Routh criteria
- Controllability and observability
- Techniques of reduction of the order of the model
- Steady state errors
- Insensitiveness to disturbances and parameter variations
- Parameters of the response to a step input
4 Synthesis in the time domain:
- State observers: identity observer and reduced order observer
- Pole assignment
- Root locus; examples
- Standard regulators: Ziegler and Nichols techniques.
5 Harmonic response function:
- Definition; link with impulsive response function
Representations: polar diagrams and Bode diagrams; examples.
6 Harmonic analysis:
- The Nyquist stability criterion for the stability of feedback systems
- The width margins and the phase margins for the analysis of dynamic behaviour
- M and N constant loci, resonance peak and band width.
7 Control systems components:
- D. c. collector motors: series and independent excitation
- Transducer
devices
- Position and velocity transducers
- Flow and velocity transducers
- Temperature transducers
Readings/Bibliography
1) M.E. Penati, G. Bertoni, S. Simonini: Automazione e sistemi di controllo. Esculapio, Bologna, 2010
3) M.E Penati: Controlli automatici. Esercizi e test commentati e risolti. Esculapio, Bologna, 2000
Teaching methods
Classroom lessons with individuation of the fundamental subjects of the course
Practice sessions during the discussion of the relative theoretical subjects
Assessment methods
Written and oral exams.
The written exam consists of a series of questions including some multiple choice questions, and one or two exercises similar to the ones done during the practice sessions.
The oral exam generally consists of a discussion of the written examination.
Teaching tools
Overhead projector and
PC
Office hours
See the website of Maria Elisabetta Penati