ELEC3206 Digital Control System Design

Module Overview

The topics considered are: z transforms, sampling and reconstruction, discretisation, elements of realisation theory, controller design via pole placement, observers, optimal control design.

Aims and Objectives

Learning Outcomes

Knowledge and Understanding

Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:

Z transform analysis of sampled data feedback loops
Stability theorems and root locus techniques
A suite of techniques for digital controller design
Optimal control design method

Syllabus

Introduction Basics of z transform theory - Inverse z transform - Convolution - Recursion relation - Realisability Sampling and reconstruction of signals - Zero order hold/D->A conversion - Shannon's sampling theorem, aliasing and folding - Choice of the sampling period in sampled-data control systems - Pulse transfer function and analysis of control systems - Mapping of poles and zeroes Case study: PID digital control Continuous-time state-space systems and their discretisation - Controllability and observability under discretisation - Intersample behaviour Realisation theory - Canonical forms - Minimality - Internal- and BIBO-stability, and relation between the two Controller design via pole placement - Continuous-time-based design techniques - Deadbeat control Case study: root-locus based digital control design Observers and their use in state-feedback loops - Observer-based controllers - The separation principle Optimal control design - Introduction to optimal control - Finite Horizon LQR - Infinite Horizon LQR

Learning and Teaching

Type	Hours
Follow-up work	18
Wider reading or practice	54
Lecture	36
Revision	10
Preparation for scheduled sessions	18
Tutorial	12
Completion of assessment task	2
Total study time	150

Resources & Reading list

Ogata. Discrete time control systems.

Computer requirements.

Assessment

Summative

Method	Percentage contribution
Examination (2 hours)	100%

Repeat

Method	Percentage contribution
Examination	100%

Referral

Method	Percentage contribution
Examination	100%

Repeat Information

Repeat type: Internal & External

Linked modules

Pre-requisite: ELEC2220