OATS MIDTERM PRESENTATION - Auburn Universitydbeale/MECH4240-50/reports/Neptune... ·...
Transcript of OATS MIDTERM PRESENTATION - Auburn Universitydbeale/MECH4240-50/reports/Neptune... ·...
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OATS MIDTERM PRESENTATIONOATS MIDTERM PRESENTATION7/8/11
Auburn Student Team:
Kyle Palmer (Project Manager)
Ben Bethel
Grayson Dawson
Cody Owen
Daniel Paulk
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Why we are here?
� Auburn University’s senior design project
� 2-semester project
� Design 1st Semester
� Build 2nd Semester
� Goals: Implement a systems engineering approach to
solve an industrial problem
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Overview
� Problem Statement
� Primary Design Requirements
� List of Concepts
� Concepts (1 of 4)
� CAD visual
� Advantages� Advantages
� Disadvantages
� Product Hierarchy
� Design Comparison
� Conclusions
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Problem Statement� Current method- time consuming
Solution,
� Automate data collection process for antenna under test
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15°Resolution
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Preliminary Design Requirements
� Carriage to go around track ≤ 4 minutes
� Wireless communication
� Removable cart
� Efficient battery life� Efficient battery life
� Angular position of carriage w/ in 1 degree
� Robust, environmentally tolerant
� Clutch mechanism for manual override
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List of Concepts1. Battery Powered, Wheel Driven
2. Monorail Concept, Wheel Driven
3. Battery Powered, Sprocket Driven
4. AC Outlet Powered, Sprocket Driven
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Concept 1
Battery Powered, Wheel Driven
Features
• Motor and
Battery on
carriage
ElectronicsBattery
Motor
carriage
• Wheel driven
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Concept 1 (cont.)Advantages
� Light weight
� Relatively inexpensive
� Few moving parts
� Simple design
� Constant RF interference� Constant RF interference
� Easier to filter out a constant source of noise
Disadvantages
� Recharge/Replace battery
� Inconsistent position control due to slip
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Concept 2
Monorail Powered, Wheel Driven
Motor
ElectronicsMonorailFeatures
• Power source:
Monorail
• Motor on
NOTE: TEATHERED CONNECTION NOT SHOWN
• Motor on
carriage
• Wheel driven by
motor
Wheel guide
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Concept 2 (cont.)Advantages
� No restriction on power source for motor
� Cement track for carriage
� Less metal,less interference with antenna
DisadvantagesDisadvantages
� High cost
� Overseas market
� Overkill design
� Problematic maintenance
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Concept 3
Outlet Powered, Chain Driven
Carriage for electronicsCarriage for electronics
Features
• Stationary
motor
• Sprocket
driven by
motor
Chain
Sprocket
Chain guide
motor
• Cart
attached to
chain
• Chain
rotates
around track
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CLICK ME!
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Concept 3 (cont.)
Advantages
� No restriction on power source for motor
� Longer life for electronics
� Stationary motor not on carriage
� More vacant space for electronics
� Options for larger motor size� Options for larger motor size
Disadvantages
� Mechanically complex
� Many moving parts
� Stretching of chain
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Concept 4
Battery Powered, Sprocket Driven
Motor
Features
• Motor on carriage
• Sprocket driven
by motor
Sprocket
Chain
by motor
• Stationary chain
around track
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Concept 4 (cont.)Advantages
� Light weight
� Relatively inexpensive
� Few moving parts
� Simple design
� Sprocket driven
� Precise position control
� Constant RF interference
� Easier to filter out a constant source of noise
Disadvantages
� Recharge/Replace battery
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Design Comparison
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Conclusion and Outlook� Conclusion
� Concept decision
� Battery powered with driven sprocket
� Benefits of chosen concept
� Accurate and precise position control
� Simplicity of design
� Battery life not an issue� Battery life not an issue
� Outlook
� Finish sizing motor and battery
� Finish embodiment of the chosen concept
� CAD drawings for carriage and track
� Begin manufacturing plan
� Generate parts list
� Price material
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Questions or Comments?