Country : Ireland
Assignment Task
    

Task
The work should be submitted via the Moodle VLE. Your submission should consist of (i) a report and (ii) a plain text document containing appropriate MATLAB commands for each Task, to reflect the work that you have done in order to produce the report. You may upload in the form of a MATLAB m-file if you wish, but a plain text file is adequate. Instructions The main report should be in MS Word format, and not PDF. If you require them, block diagrams may be scanned and included in the report as images, since these can be time consuming to draw electronically. You may consider whether they add value to the report - some probably will, others will not. Graphs from MATLAB should not be scanned, and should be generated electronically from within MATLAB. You should add your student number in MATLAB, as part of the MATLAB title of each graph you produce. Handwritten work, then scanned into electronic format, is not acceptable for other aspects of the work. Your report is limited to 20 A4 pages. Excess pages will not be marked. There is absolutely no need, whether or not you use this limit, to reproduce unnecessary background material from this course work sheet. Present the solution to each Task, do not present the problem, it is a waste of time, and a waste of your allowed limit. In the same way, do not waste valuable space with a trivial, but artistic, cover page. Please include your student ID number within the report, inside the header or footer is a good way to do this on each page. Additional Information Students are reminded about plagiarism. The University considers that plagiarism may take different forms, including, but not limited to, the submission of work that is wholly or substantially the work of another, and also the submission of work that is wholly or significantly based on the work of another.

Task 1 - Modelling A d.c. motor is to be controlled using a variety of methods. Unfortunately, the control engineer does not have any suitable transfer function model of the system as a basis for controller design. In order to tackle this problem, a simple experimental feedback test rig is constructed, and various data are collected from the system. The data is noisy and uncertain, due to limitations of the methods used to collect it. It is believed that the system can be represented using a first-order transfer function model. Speed Response - Finding P(s) The first test is an open-loop test measuring motor speed (shown in Figure 1). An amplifier gain k = 2 is used, and the driving input is a step, by coincidence of 2 volts. Use the data of Figure 4 to deduce an appropriate transfer function model P(s). The model for P(s) does not need to be taken forward to any other tasks.

 

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  • Posted on : February 08th, 2020
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