Difference between revisions of "Assignment 4 - 2014"
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Revision as of 19:58, 21 February 2014
| Due date(s): | 28 February 2014, in class |
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Assignment questions |
<rst> <rst-options: 'toc' = False/> <rst-options: 'reset-figures' = False/> .. rubric:: Assignment objectives: using MATLAB to simulate and test control systems; self-learning new concepts from the simulation.
.. question:: :grading: 15
#. What is the following MATLAB/Simulink simulation a representation of?
.. image:: ../figures/process-control/assignments/simulink-base-flowsheet.png :scale: 80 :width: 700px
#. Attach a copy of the ``Scope`` output for a step input of unit magnitude, occurring at a time of 2 units into the simulation. Your simulation should run until the process reaches steady state.
#. What is the final value of the ``Scope`` output variable when simulated until it reaches steady state?
Demonstrate/show/prove theoretically (i.e. without using Simulink) that this value is correct.
#. Add a time delay to the process of 2 units (as shown below) and resimulate the response to a point in time so that it reaches steady state.
.. image:: ../figures/process-control/assignments/simulink-base-flowsheet-time-delay.png :scale: 80 :width: 700px
Show the ``Scope`` output and describe what you notice.
Explain why it takes longer to reach steady state as compared to your answer in part 1.
#. Next, simulate the process with a time delay
a) of 5 units and b) of 10 units.
Attach the ``Scope`` output for these simulations, and explain why you observe the behaviour noticed.
#. In general, what do you conclude about time delays in a process?
</rst>