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Connecticut Corsair Senior Design. Simulator Refurbishment EE Design Team 194. Connecticut Corsair Senior Design. Problem Statement Summary - PowerPoint PPT Presentation
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Connecticut Corsair Senior Design
Simulator RefurbishmentEE Design Team 194
2
Connecticut Corsair Senior Design
Problem Statement SummaryIn interdisciplinary team of mechanical, computer and electrical
engineering students are reengineering the base of an outdated flight simulator to have movements characteristics akin to that of a Corsair
F4U-4 aircraft.
3/15
Connecticut Corsair Senior Design
Previous WorkPros/Cons of Induction vs. Servo Motors
SERVO MOTORS INDUCTION MOTORSSmall LargeIntegrated Encoder Encoder SeparateLow Run Temperature High Run TemperatureEasier to Prototype Hard to Develop PrototypeEfficient Less EfficientExpensive CheaperServo drives are expensive VFDs are less expensiveArduino compatible Arduino compatible
4/15
Connecticut Corsair Senior Design
Previous WorkIdeal Motor Specifications
in-lb =13.7 ft-lb
**
OLD SPECIFICATIONS NEW SPECIFCATIONS
RPM: 26 RPM: 65
Torque Out: 1212 in-lbs Torque Out: 3484.1 in-lbs
Gear Ratio: 63:1 Gear Ratio: 21:1
**4.7hp non-standard. 5hp required.**
5/15
Connecticut Corsair Senior Design
Current Work:Second Design Semester
Motor Purchase and Installation- Induction motors mounted, relays built- Existing VFDs wired to motors- Servo purchased and being shipped
Electronics InterfacingComponents include...
- Motor,- Arduino- VFDs- Protective circuitry, i.e: relays- Computer- Joystick inputs
Arduino Sketch development- Function documentation and specifications
Connecticut Corsair Senior Design
Current Work:Existing Motor Rebuild and Servo Integration
- Initial Design: three servo motors- Redesign: single servo, two
induction!- More compliant with budget
- Small simulator load makes this possible
- Induction motor damage update- Motor stator housings replaced
7/15
Connecticut Corsair Senior Design
Current Work:Second Design Semester
Given the previous design team’s wiring…• Wiring modifications were made
• Parts of existing setup cut out
• New wiring allows for variable frequency input
• Old schematics didn’t provide Arduino pin numbers
Connecticut Corsair Senior Design
Current Work:Rewire VFDs
Connecticut Corsair Senior Design
Current Work:Wire Schematics
• Reads Joystick(Pots) inputs to move motors at variable speeds using PWM.• Easy to write analog output with simple
math.
• Only at half capacity, will be solved with circuit elements.
• Encoder code is being developed for the AS25 Gurley Absolute Encoder.
Connecticut Corsair Senior Design
Current Work:Arduino Sketch Development Thus Far
• Interfacing with Servo drive
• shipment estimated between 3/14 and 3/22
• Actual position controlled induction motors.
Connecticut Corsair Senior Design
Current WorkWhat’s Next?
• Provides absolute position information to Arduino controller
• 16 bit resolution - very accurate
• Synchronous serial data communication between encoders and Arduino
• High speed: ~1 microsecond response time
Connecticut Corsair Senior Design
Current WorkAbsolute Encoder
• Lockheed Martin’s Prepar3D Academic v 1.4.4747.0
• Used for both entertainment and training
• Immersive cockpit with real-life airports and environments
• Mission Design, capable of entertainment and training purposes
• SimConnect Developer SDK
• Add-ons can be written in C, C++, C#.net or VB.net
• Add gauge processing, replace events processing, record/monitor flights, create custom missions, weather manipulation, enable hardware with Prepar3D, control additional views and/or AI aircraft
• F4U-4 Corsair Plane Model Import via A2A
• A2A is a software add-on company
• “Aircraft Factory” Line
• Fine distinction: use software to control machine
• Future application: 3D immersive LCD screen
Connecticut Corsair Senior Design
Current WorkSimulation Software: Prepar3D
Connecticut Corsair Senior Design
Timeline2/24/2014 3/3/2014 3/10/2014 3/17/2014 3/24/2014 3/31/2014 4/7/2014 4/14/2014 4/21/2014
Zach MoschRun VFD's and Induction motors with Joystick
Absolute encoder feedback
Position controlled Induction Motors
See previous Servo's hopefully?
Transfer Arduino code to servo drive
See previous Testing Testing
David Tartaglino
Complete VFD and Induction motor wiring
Finalize wirings and mount to simulator.
Make new wiring diagrams and schematics
See previous
Unpack and start working on servo motor installation
Complete servo and drive wiring
Make servo wiring diagrams and schematics
Testing Testing
Amanda Sweat
Contact Lockheed customer support for installation issues
Purchase A2A simulation Corsair model
Corsair model imported using client server. Model joystick control
Outline how encoder feedback inputs are imported into software
Create logfiles of positions from Prepar3D
Integrate logfiles with existing Arduino code
Answer: Can environment outputs be processed to affect flight simulator?
Write up on machine + Prepar3d integration. Computer wired.
Manipulate machine and software for simulation
Randy Bertrand
Find usable code for Prepar3d outputs
Absolute encoder feedback
Link motors to Prepar3d position outputs
See previous Servo motors Help with servo setup
Incorporate servo position info with encoder feedback from other motors
Testing Testing
Connecticut Corsair Senior Design
High Level Joystick Motor Diagram
=Arduino Sketch
Connecticut Corsair Senior Design
ME Contributions
• Drive motor Analysis and Replacement• Free body Diagrams• Torque Requirements and Comparison• Nonlinear Linkages Analysis
• Scissor Arm Analysis and Redesign• Determined failure scenarios• ANSYS analysis• CAD models
• Motor Mount Redesign• Gearbox designs• ANSYS analysis• CAD models
17
Connecticut Corsair Senior Design
Questions?
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