Grateful acknowledgment is given to the following for contributions in support of this laboratory:
Analog Devices Company
Apple Computer Company
MicroMotion Instruments
National Instruments Corporation
Plant Engineering Consultants
1: Schedule 2
2: Grading 4
3: Objectives & Guidelines 5
4: Project Information 7
5: Weekly Assignments 14
Appendices 64
Part I -- System Identification
Week 1 Introduction, steady-state measurements, statistics,
10 Jan data acquisition software, cleaning up
Week 2 Steady-state operating curves, graphing & word
17 Jan processing software
Week 3 Week 3 Report
24 Jan Step response measurements
Week 4 Week 4 Report
31 Jan Modelling software
Week 5 Modelling -- Approximate FOPDT
7 Feb
Week 6 Week 6 Report
14 Feb Frequency response measurements
Week 7 Modelling frequency response
21 Feb
Week 8 Week 8 Report
28 Feb Plant visit
Part II -- Control System Design
Week 9 Root locus plotting
6 Mar
Week 10 Week 10 Report
20 Mar Proportional control theory & modelling
Week 11 Proportional control experiment
27 Mar
Week 12 Week 12 Report
3 Apr PI control theory & modelling
Week 13 PI control experiment
10 Apr
Week 14 Week 14 Report
17 Apr
If I treat you as you are, I will make you worse.
If I treat you as though you are what you are capable of becoming, I help you become that.
--Goethe
Schedule of Presentations & Reports
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| 1 | 10-Jan |
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| 2 | 17-Jan |
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| 3 | 24-Jan |
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| 4 | 31-Jan |
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| 5 | 7-Feb |
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| 6 | 14-Feb |
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| 7 | 21-Feb |
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| 8 | 28-Feb |
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| 9 | 6-Mar |
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| 13-Mar | |||||
| 10 | 20-Mar |
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| 11 | 27-Mar |
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| 12 | 3-Apr |
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| 13 | 10-Apr |
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| 14 | 17-Apr |
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Pre-Lab presentation is to be given by 2 students; one from each
of the groups indicated in the "Pre-Lab" column.
Presentations of results will be given on the days indicated in
the "Presentation" column.
Reports are scheduled as indicated in the "Report" column. Within your group, you submit reports in order of the group assignment list handed out in lab. For example, "third member" in week 4 means that the person listed third in the group assignment list submits the Week 4 Report.
The grading in ENGR 329 will reflect what is observed of your understanding of control systems operation. Evidence of this understanding can be observed in your
ï ability to apply the principles to a physical system (performance in the laboratory and quality of results)
ï ability to construct models to simulate the physical system (performance in modelling and quality of results)
ï ability to interpret, describe and explain experimental
and modelling work (reports and presentations)
The weights given will be
35 points Physical laboratory
(attendance, performance)
20 points Modelling laboratory
(attendance, performance)
20 points Reports
25 points Presentations
Physical and modelling lab will be graded on this scale
points for Leadership Contributions
Participation Creativity
Cooperation Teamwork
0 points Absent
The semester grade will be determined by your point total
90-up A
80-89 B
70-79 C
65-69 D
0-64 F
The following must be completed to receive a passing grade in the lab:
2 reports, 3 presentations, 5 out of the 6 physical laboratories,
3 out of 4 of the modelling laboratories and a submitted report
notebook.
All work done will receive credit if it is submitted before the
last scheduled lab meeting of the semester.
Objectives
The main objectives of the laboratory experiences are to help
you sharpen your skill in observing what happens to an engineering
system and to accurately and completely describe what you observe.
Here is a diagram of the experiments and modelling to be done
during the semester. Generally, in the first half of the semester,
you will be conducting experiments and making observations on
your system so that you can build a good linear FOPDT model of
the system. A "good" model is one in which the results
of the model calculations are in agreement with the experimentally
observed results.
| Observations on Laboratory System | Modelling to Approximate the System | |||
| Week 1-2
Observations at steady state | ||||
| Week 3
Observations of dynamic response to a step input |
| Week 4-5
Build a model to describe the system | |
| Week 6
Observations of dynamic response to a sine input |
| Week 7-8
Improve a model to describe the system | ||
| Week 10
Verify & fine tune the design of the controller |
| Week 9
Use a model to design a proportional controller | |
| Week 12-14
Verify & fine tune the design of the controller |
| Week 11
Use a model to design a proportional-integral controller |
In the second half of the semester, you will use this linear FOPDT model that you have built to design a control system to give a response of your system under certain operating scenarios. Then you will conduct experiments to see if your designs were valid and useful.
Guidelines on Safety, Cleanliness, Conservation,
Citizenship
We have had over two years of experience with no lost-time injuries
in this lab. Let's all do our part to make this year another
one. In the event that someone is injured in the lab and is bleeding,
before you help them, put on latex gloves that are available in
the lab. Have someone show you where they are.
These labs are not routinely cleaned by the custodial workers.
We have to keep them clean ourselves. Always leave the lab cleaner
when you leave than when you arrived. If the trash cans are full,
set them in the hall to be emptied. If an empty trash can is
outside the door, bring it into the lab.
Around the computer workstations, do not have food or drink.
If you have food or drink elsewhere, please clean up your stuff.
Recycle aluminum cans and Styrofoam containers. Rinse them first
if there's grunge in them.
Conserve resources and money by printing only what is necessary
for effective learning. If you print something that you don't
need, place the paper in the "one-side-good" recycle
stack to be reused. (Put the good side up.) If you are printing
a draft, please use paper from the "one-side-good" stack.
Printers are not instantaneous. This lab has one printer and
many users. During heavy use times, plan twice and print once.
This will reduce frustrations. In the event you don't get a
printout instantly, re-read this paragraph.
If you have any suggestions to improve this lab, pass it on to
an instructor or assistant.