ENGT5201 Advanced dynamics and control assignment
Introduction
As I am sure you know due to COVID-19 outbreak, the final exam of ENGT5201 is
transformed to course work submission. Over the laboratory session on Friday
13/03/2020 you had experimental investigation with ECP M210 rectilinear equipment.
In this academic year, you will be examined based on only one course work
submission involves the production of a report that reflects your work and
observations. This report should be written in two sessions as follow with the marking
scheme attached to carry all the module mark.
1. Part 1- Lab report, structure and marking scheme (30% of total mark)
The first part of your report is around your laboratory work. It should comply with the
following structure and will be marked based on following marking scheme.
• Provide a brief introduction to rectilinear, ECP210. Explain the main objectives
of the experiment.
(15 marks)
• Plot transient responses for a system ECP210 with one trolley using Matlab
script “ECP_rectiliniear_data_step_input_oneTrolley.m” from the folder
“Laboratory Experiments: Open-Loop Experiments with ECP210 and ECP210”
on BB ENGT 5201.
o NB: Enter the ‘name of file’ with the data you collected during
experiment:
o D = readECPdata(‘name of file’);
(15 marks)
• Explain trolley transient process response to the step control input. Measure
the overshoot, the rise time, the settling time using functions for editing in the
Matlab figure.
(15 marks)
• Identify the physical parameters of the trolley-spring system (1DoF) using the
approach described in this hand note
(15 marks)
• Attach the air dashpot to the trolley and tune its valve screw to reduce the
overshoot and provide critical damping to the system. Save and plot several
transient processes. Give the explanation to the observed results.
(15 marks)
• Connect a second trolley using additional spring. Apply a sine sweep control
signal and run the vibration test. Plot amplitudes for two trolleys using Matlab
script “ECP_sine_sweep_input_twoTrolleys.m” provided on BB (enter the
file name with your experimental data). Explain the origin of two peaks in the
system response.
(15 marks)
• Formulate the main conclusions from the experiment.
(10 marks)
2. Part 2- Dynamic and control modelling, structure and marking scheme (70%
of total mark)
In part 2 of your report, you should model the rectilinear machine described in the part
1 with MATLAB/Simulink. By the end of part 1, you identified the physical parameters
of the trolley-spring system includes effective mass, damper, stiffness, etc. by using
the approach described in this hand note. Now is time to model the in-question system
through MATLAB/Simulink. In part 2, you should model all three different scenarios
(1DoF system, 1 degree of damped system, and 2DOF system) run in the experiment.
The report should comply with the following structure.
• Provide a brief introduction of Matlab/Simulink to model and control a dynamic
system in this case rectilinear apparatuses, ECP210. Describe the potential
application of this package in engineering. Explain the main objectives of the
report.
(10 marks)
• Develop a Matlab/Simulink model to plot transient responses for a system
ECP210 with one trolley under sinusoids excitation without damper. The
parameters of sinusoids excitation are free to choose.
o Apply the PID-based position control for 1DoF rectilinear system model
and plot the response of the trolley (describe main principle, differential
equation, transfer function) (10 marks)
o How the PID parameters affect the system performance? Plots different
PID parameters (10 marks)
o What is the difference between control a system experimentally and with
the theoretical model? Assumption, inaccuracy, etc.
(10 marks)
• Develop a Matlab/Simulink model to plot transient responses for a system
ECP210 with one trolley under sinusoids excitation with damper. The
sinusoids excitation parameters are free to choose.
o Apply the PID-based position control for the rectilinear system and plot
the response of the trolley (describe main principle, differential equation,
transfer function) (10 marks)
o How the PID parameters affect the system performance? (10 marks)
o What is the effect of damping in the model? Plot different damping
parameters (10 mark)
• Develop a Matlab/Simulink model to plot transient responses for a system
ECP210 with two trolley under sinusoids excitation without damper. The
sinusoids excitation parameters are free to choose.
o Apply the PID-based position control for the rectilinear system model and
plot the response of the trolley (describe main principle, differential
equation, transfer function) (10 marks)
o How the change of the mass in trolley affect the system model
performance? (10 marks)
• Conclusion and future work, Conclusion should recall all the materials in the
report briefly. Future work is an open question. Please investigate research and
applications
(10 marks)
3. Submission details
Your report will need to be submitted via Turnitin. The part one is 30% of total mark
and part 2 will cover 70%. Please note that you can only submit one report include
two sessions, once so please check your work carefully before submitting it, ensuring
it is the right version to submit. The submission deadline is Friday 1st May 2020.
Unauthorized late submissions within 14 days of the deadline will result in a cap of
40%. Any late submissions after 14 days of the deadline will result in a mark of 0%.
Academic Offences Academic offences are taken very seriously and can result in
penalties ranging from failure in a component or assignment to expulsion from the
university. Please see: https://www.dmu.ac.uk/current-students/studentsupport/exams-deferralsregulationspolicies/student-regulations-andpolicies/academic-offences.aspx for more details. Any evidence of plagiarism,
collusion or cheating in coursework, or misconduct in the examination, will be treated
very seriously and in the first instance lead to referral to the Academic Practice Officer.
You should keep the similarly of your report below 40%.
4. General information
• If you are in resit of this module, you need to only submit the relevant
component. For example, if you failed in the exam last academic year, you
should submit only the part 2 of course work. If you are in resit both exam and
report, you should submit the parts 1 and 2. Alternatively, if you must resit
course work only, you need to submit the part 1.
• For those who missed the lab session on Friday 13/03/2020, they only eligible
to submit the part two of report (they already loosed 30% of their marks). To do
so, they can ask their friends to share the identification of the rectilinear system
or develop the part 2 of their course work based on any assumed mechanical
parameters. Your input parameters will not consider into the assessment.
• For those are in resit unseen exam and have not access to their last year lab
result, they can ask their friends to share the identification of the rectilinear
system or develop the part 2 of their course work based on any assumed
mechanical parameters. Your input parameters will not consider into the
assessment
• Installation of Matlab in your personal computer is putty simple. Please look at
https://www.dmu.ac.uk/dmu-students/hot-topics/2018/february/matlab-softwareavailable-for-all-dmu-students-and-staff.aspx
For any further technical installation questions, you can ask ITMS.
• Following tutorials will help you for develop a Matlab/Simulink model.
https://www.youtube.com/watch?v=_DTdgp-oIUI
https://uk.mathworks.com/videos/pid-control-made-easy-81646.html
https://www.youtube.com/watch?v=T9_C3jhnQXI
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