ELE3105 Computer Controlled Systems
Semester 1, 2013 External Toowoomba  
Units :  1 
Faculty or Section :  Faculty of Engineering & Surveying 
School or Department :  Electrical, Electronic & Computing 
Version produced :  21 July 2014 
Staffing
Examiner: Paul Wen
Moderator: John Leis
Requisites
Prerequisite: ELE2103 or Students must be enrolled in one of the following Programs: GCNS or GCEN or GDNS or MEPR or MENS or METC
Synopsis
To apply control to any 'real' problem, it is first necessary to express the system to be controlled in mathematical terms. The 'state space' approach is taught both for expressing the system dynamics and for analysing stability both before and after feedback is applied. These concepts involve revision and extension of matrix manipulation and the solution of differential equations. By defining a timestep to be small, these state equations give a means of simulating the system and its controller for both linear and nonlinear cases. Many of the implementations of online control now involve a computer, which applies control actions at discrete intervals of time rather than continuously. It is shown that discretetime state equations can be derived which have much in common with the continuous ones. Simulation does not then rely on a very small time step. The operator 'z' is first introduced with the meaning of 'next', resulting in a higher order difference equation to represent the system, then shown to be a parameter in the infinite series which is summed to form a 'z transform'. It is shown that the discretetime transfer function in z can be derived from the Laplace transform of the continuous system, with additional terms to represent the zero order hold of the DAC. Analysis of stability in terms of the roots of a characteristic equation are seen to parallel the continuous methods and techniques of pole assignment and root locus are also seen to correspond. Techniques are presented for synthesising transfer functions by means of a few lines of computer code, to make stable control possible for systems which would be unstable with simple feedback.
Objectives
The course objectives define the student learning outcomes for a course. On completion of this course, students should be able to:
 design of a computer control feedback loop, including algorithms in software;
 analysis and simulation of control systems using state space methods; and
 design of systems in which the controllers have dynamics implemented in software.
Topics
Description  Weighting(%)  

1.  Use of the Ztransform for analysis and design of computer control loops  15.00 
2.  Representation of discrete time dynamics in software  10.00 
3.  Discrete time state equations and stability analysis  10.00 
4.  Controller design and 'tuning' with controller dynamics, PID  15.00 
5.  Pole assignment, root locus and other methods in the complex plane  10.00 
6.  Derivation of state equations  10.00 
7.  Modelling and simulation by computer  10.00 
8.  Matrix analysis of continuous linear systems and controllers  15.00 
9.  Concepts of controllability and observability  5.00 
Text and materials required to be purchased or accessed
ALL textbooks and materials available to be purchased can be sourced from USQ's Online Bookshop (unless otherwise stated). (https://bookshop.usq.edu.au/bookweb/subject.cgi?year=2013&sem=01&subject1=ELE3105)
Please contact us for alternative purchase options from USQ Bookshop. (https://bookshop.usq.edu.au/contact/)

Nise, NS 2008, Control systems engineering, 5th edn, John Wiley & Sons Inc, Hoboken, NJ.

MATLAB Student Edition, Version 7.0 (or later).
Reference materials

Dorf, RC & Bishop, RH 2008, Modern control systems, 11th edn, Pearson Education, Upper Saddle River, NJ.

Ogata, K 1995, DiscreteTime Control Systems, 2nd edn, Prentice Hall, Englewood Cliffs, NJ.

Ogata, K 2010, Modern control engineering, 5th edn, Pearson, Boston, MA.
Student workload requirements
Activity  Hours 

Assessments  36.00 
Directed Study  39.00 
Examinations  2.00 
Private Study  78.00 
Assessment details
Description  Marks out of  Wtg (%)  Due Date  Notes 

ASSIGNMENT 1  200  20  15 Apr 2013  
ASSIGNMENT 2  100  10  03 Jun 2013  
2 HOUR RESTRICTED EXAMINATION  700  70  End S1  (see note 1) 
NOTES
 Student Administration will advise students of the dates of their examinations during the semester.
Important assessment information

Attendance requirements:
There are no attendance requirements for this course. However, it is the students' responsibility to study all material provided to them or required to be accessed by them to maximise their chance of meeting the objectives of the course and to be informed of courserelated activities and administration. 
Requirements for students to complete each assessment item satisfactorily:
To satisfactorily complete an assessment item a student must achieve at least 50% of the marks or a grade of at least C. Students do not have to satisfactorily complete each assessment item to be awarded a passing grade in this course. Refer to Statement 4 below for the requirements to receive a passing grade in this course. 
Penalties for late submission of required work:
If students submit assignments after the due date without (prior) approval of the examiner then a penalty of 5% of the total marks gained by the student for the assignment may apply for each working day late up to ten working days at which time a mark of zero may be recorded. No assignments will be accepted after model answers have been posted. 
Requirements for student to be awarded a passing grade in the course:
To be assured of receiving a passing grade in a course a student must obtain at least 50% of the total weighted marks for the course. 
Method used to combine assessment results to attain final grade:
The final grades for students will be assigned on the basis of the weighted aggregate of the marks (or grades) obtained for each of the summative assessment items in the course. 
Examination information:
In a Restricted Examination, candidates are allowed access to specific materials during the examination. The only materials that candidates may use in the restricted examination for this course are: writing materials (nonelectronic and free from material which could give the student an unfair advantage in the examination); a handheld, batteryoperated, nonprogrammable calculator (students must indicate on their examination paper the make and model of any calculator(s) they use during the examination). 
Examination period when Deferred/Supplementary examinations will be held:
Any Deferred or Supplementary examinations for this course will be held during the examination period at the end of the semester of the next offering of this course. 
University Student Policies:
Students should read the USQ policies: Definitions, Assessment and Student Academic Misconduct to avoid actions which might contravene University policies and practices. These policies can be found at http://policy.usq.edu.au.
Assessment notes

The due date for an assignment is the date by which a student must despatch the assignment to the USQ. The onus is on the student to provide proof of the despatch date, if requested by the Examiner.

Students must retain a copy of each item submitted for assessment. This must be despatched to USQ within 24 hours if required by the Examiner.

In accordance with University Policy, the Examiner may grant an extension of the due date of an assignment in extenuating circumstances.

If electronic submission of assessments is specified for the course, students will be notified of this in the course Introductory Book and on the USQ Study Desk. All required electronic submission must be made through the Assignment Drop Box located on the USQ Study Desk for the course, unless directed otherwise by the examiner of the course. The due date for an electronically submitted assessment is the date by which a student must electronically submit the assignment. The assignment files must be submitted by 11.55pm on the due date using USQ time (as displayed on the clock on the course home page; that is, Australian Eastern Standard Time).

If the method of assessment submission is by written, typed or printed paperbased media students should (i) submit to the Faculty Office for students enrolled in the course in the oncampus mode, or (ii) mail to the USQ for students enrolled in the course in the external mode. The due date for the assessment is the date by which a student must (i) submit the assessment for students enrolled in the oncampus mode, or (ii) mail the assessment for students enrolled in the external mode.

The Faculty will NOT normally accept submission of assessments by facsimile or email.

Students who do not have regular access to postal services for the submission of paperbased assessments, or regular access to Internet services for electronic submission, or are otherwise disadvantaged by these regulations may be given special consideration. They should contact the examiner of the course to negotiate such special arrangements prior to the submission date.

Students who have undertaken all of the required assessments in a course but who have failed to meet some of the specified objectives of a course within the normally prescribed time may be awarded one of the temporary grades: IM (Incomplete  Make up), IS (Incomplete  Supplementary Examination) or ISM (Incomplete Supplementary Examination and Make up). A temporary grade will only be awarded when, in the opinion of the examiner, a student will be able to achieve the remaining objectives of the course after a period of non directed personal study.

Students who, for medical, family/personal, or employmentrelated reasons, are unable to complete an assignment or to sit for an examination at the scheduled time may apply to defer an assessment in a course. Such a request must be accompanied by appropriate supporting documentation. One of the following temporary grades may be awarded IDS (Incomplete  Deferred Examination; IDM (Incomplete Deferred Makeup); IDB (Incomplete  Both Deferred Examination and Deferred Makeup).

Harvard (AGPS) is the referencing system required in this course. Students should use Harvard (AGPS) style in their assignments to format details of the information sources they have cited in their work. The Harvard (AGPS) style to be used is defined by the USQ Library's referencing guide. http://www.usq.edu.au/library/referencing
Other requirements

A basic familiarity with a programming language or MATLAB is assumed.