35245 - Automatic Control Systems

Course Unit Page

Academic Year 2018/2019

Learning outcomes

Know and understand the fundamental principles of automatic control, both open loop and with feedback. Study how the basic components can be applied in the design of an automatic control system. Study the control algorithms and the underlying data elaborations in order to design proper control strategies.

Course contents

Introduction to control systems

Continuous-time dynamical systems

Introduction to dynamical systems. Movement vs. equilibrium, linearization, stability.

Laplace transform and transfer function.

Laplace transform. Transfer function of a linear dynamic system. Definition of system dynamical modes. Sub-systems and composition of block diagrams.

Stability and elementary response

Stability of a linear system. Temporal analysis of 1st and 2nd order systems. Role of system’s zeros on temporal behavior.

Harmonic analysis

Fourier series and transform. Steady-state theorem and the harmonic response function. Bode diagram, construction of bode diagram from elementary terms. Filtering property of dynamic systems and corresponding classification. Spectrum of filtered signals

Root locus

Sensitivity functions of a feedback control system

Design in the frequency domain

Specifications analysis. Two-step design of feedback controllers. Static specifications and relative controller. Design scenarios and associated control structures.

Controllers design

Lag networks, lead networks and combined lead-lag networks. PID controllers.

Readings/Bibliography

Italian textbooks:

a) G. Marro, "Controlli Automatici'', Zanichelli;

b) P. Bolzern, R. Scattolini, N. Schiavoni, "Fondamenti di controlli Automatici'', McGraw-Hill.

English textbooks

Norman S. Nise “Control Systems Engineering” 6th Edition – Wiley Student Edition

Teaching methods

The course includes: theoretical lectures made with the aid of multimedia systems. The didactic material is uploaded before each lecture on the platform “AMS CAmpus” .

Assessment methods

The exam consists of a written test.

It is based on exercises and open questions, for testing the knowledge of the course content.

Teaching tools

Slides

Office hours

See the website of Carlo Rossi