# Study-Unit Description

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CODE SCE2213

TITLE Automatic Control Systems 2

LEVEL 02 - Years 2, 3 in Modular Undergraduate Course

ECTS CREDITS 5

DEPARTMENT Systems and Control Engineering

DESCRIPTION Performance of Control Systems:
- Definition of stability and link between CLTF poles and stability;
- Routh Stability Criterion;
- Closed-loop system performance: System types, steady state errors, error constants, time domain specifications, sensitivity functions and noise rejection;
- Root-locus techniques.

Frequency Domain Analysis of Stability:
- Phase and Gain Margins from Bode plots;
- Nyquist Stability Criterion and Nyquist Plots;
- Nichols Plots.

Study-unit Aims:

This study-unit develops the concepts of classical automatic control theory introduced in SCE2111, concerning analysis of linear time-invariant feedback systems, with particular emphasis on stability using root-locus and frequency response techniques.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to, given the mathematical description of the linear dynamics of a system:
- explain the conditions of closed loop stability in both the time and the frequency domains;
- explain the system's closed loop behaviour for changing closed loop gain.

2. Skills:

By the end of the study-unit the student will be able to, given the mathematical description of the linear dynamics of a system:
- analyse the performance and stability of closed loop systems by mathematical methods;
- obtain root loci for the system's closed loop poles for changing open-loop gain;
- analyse the stability of closed loop system from frequency domain plots such as Bode, Nyquist and Nichols plots.

Main Text/s and any supplementary readings:

- Kuo B.C., 1995. Automatic Control Systems, Prentice Hall. ISBN 0-13-304759-8
or
- Ogata K., 1990. Modern Control Engineering, Prentice Hall. ISBN 0-13-589128-0

STUDY-UNIT TYPE Lecture, Practicum & Tutorial

METHOD OF ASSESSMENT
 Assessment Component/s Assessment Due Resit Availability Weighting Report SEM2 No 15% Online Examination (2 Hours) SEM2 Yes 85%

LECTURER/S Marvin Bugeja

The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the description above applies to study-units available during the academic year 2020/1. It may be subject to change in subsequent years.

https://www.um.edu.mt/course/studyunit