web enabled wind tunnel system - bradley...
TRANSCRIPT
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Web Enabled Wind Tunnel System
Mike Firman and Ben Morrison
Advised by Dr. Aleksander Malinowski & Dr. Scott Post
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Presentation Outline
Overall Project Summary
Wind Tunnel Description
Overall System Block Diagram
Subsystems
Progress
Suggested Future Work
Equipment
Questions
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Overall Project Summary
Web Interface for User Interaction
Controller for Wind Tunnel Operation
Hardware Interfacing
Networking Setup to Support Aforementioned Functions
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Goals
• Allow for Remote Starting, Stopping, and Control of Wind Tunnel
• Improve Existing Capabilities of the Wind Tunnel
• Create an Interface that is Intuitive and Easy to Use
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Project Significance
• Allow for More Accurate Control of Wind Tunnel Functions
• Increase the Level of Repeatability in Experiments Involving the Wind Tunnel
• Allow for Wind Tunnel Testing for Those Without Access to a Wind Tunnel(i.e. Schools or Small Businesses)
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Wind Tunnel Description
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Blower Motor
Damper/Universal
Motor
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Testing Bed
Component Angle Set
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Lift and Drag Sensors
Linear Actuator
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Wind Speed Feedback
Close Up
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Equipment Purchased
DCS-910
– Price: 67$
– IP Ethernet Webcam
FVS-318
– Price: 89$
– VPN Firewall Router
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Equipment Purchased
OMRON G3NA-225B-DC5-24
– Price: 26.50$
– SPST Solid State Relay
Firgelli Automations FA-PO-150-12-8”(20:1)
– Price: 139.99$
– 10K Ohm Potentiometer
– Built-in Limit Switches
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Overall System Block Diagram
Computer Embedded Controller
Wind Tunnel
Router The
Internet
Webcams
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Subsystems
Webcams
Router
Microcontroller
User Interface Computer Embedded Controller
Wind Tunnel
Router The
Internet
Webcams
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Subsystems Cont.
Output Sensor Data
PI Control for Position
Wind Speed Controller
Computer Embedded Controller
Wind Tunnel
Router The
Internet
Webcams
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Silabs C8051F120 Development Kit
Plenty of I/O Capability
Prior Familiarity
8 Channel A/D
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Microcontroller Setup
F120 Development Kit
Computer
Wind Tunnel
Wind Speed Sensor
Lift/Drag Sensors
Actuator Potentiometers
Serial Link Turbine Power Relay
Wind Speed Relays
H-Bridge Actuator PWM
To Actuators
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Progress Made
Analyzed and labeled wind tunnel wiring
Researched Webcam/Router
Tested and configured VPN router
Tested and configured camera
Tested camera streaming capability
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Initial JAVA GUI Designed
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Linear Actuator Model
Linear Actuator Modeled in Simulink
Transfer Fcn
1
s
To Workspace1
out
To Workspace
t
Step ScopeGain
.025
Clock
0 5 10 150
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Simulink Model and
Actual Data Comparison
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Closed Loop System Model
•Full Model of Closed Loop System
•Includes PWM and H-Bridge Models
control signal
To Workspace2
control
To Workspace1
out
To Workspace
t
Step Signal
Preprocessing
In1 Out1
ScopePWM
Subsystem
In1 Out1
Linear
Actuator
Model
In1 Out1
H-Brdige
Subsystem
In1 Out1
Gain 2
100
Gain 1
.1
Gain
500
Clock
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Closed Loop Output with 2V Step Input
0 5 10 15 20 250
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 5 10 15 20 250
0.5
1
1.5
2
2.5
3
3.5
Closed Loop Control
Signal with 2V Step Input
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Approx. Open Loop PWM
Closed Loop PWM
Closed Loop PWM
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Progress Made Cont.
Turbine Starting and Stopping from Microcontroller
Wind Speed Control Methods Researched
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Future Work
• Choosing Components and Designing the Wind Speed Controller
• JAVA User Interface
• Interfacing to Sensors
• Recording Sensor Data
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Questions?