Dr' Stacy Bamberg Faculty Advisor

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Dr. Stacy Bamberg Faculty Advisor Dr. Bruce
MacWilliams Industry Advisor Dante
Bertelli dante_at_g6net.com Brad Hansen bch2000_at_ho
tmail.com Joseph Alston jda12_at_utah.edu Chad
Taylor jchadtaylor_at_hotmail.com
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Outline

• Project Summary
• Budget and Schedule
• Electronics
• Functional Design and Drawings
• Looking Forward

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• What is the lower limb model?
• A model not a prosthetic leg
• Used as a gold standard to compare
• Known joint centers
• Display position of leg to medical tech

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• Budget
• 500 initial
• 500 Shriners Hospital contribution approved
• Total spent so far is 88
• Total projected cost is 850

• Schedule
• Design almost complete
• Hip is near production
• About 2 weeks behind progress goals

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• Previous presentation issues
• Researching wider variety of options.
• Developing a Simulink model for digital signal
  processing.

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• Hip
• Knee
• Leg Members

Images Courtesy Brad Hansen
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Extra Work
Simplified
Optical Encoder
Available Materials
Images Courtesy Chad Taylor, Dante Bertelli, and
Brad Hansen
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First Design
Final Design
Axis
Axis
Images Courtesy Chad Taylor, Dante Bertelli, and
Brad Hansen
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Single link Design
Multi-link Design
Images Courtesy Brad Hansen
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• Precision
• Overall 1 degree
• Electrical 1/3 degree
• Mechanical 2/3 degree
• Precision ? Tolerances
• Optical Encoders
• Axial Tolerance 0.02 inches

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Nonfunctional Design
Functional Design
Optical Encoder Mount
Friction Surface
Washer
Space Conservation
Sleeve
Barrel
Tolerance Stack-up
Bearings
Shaft
Images Courtesy Brad Hansen
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• Finalize Ankle and Knee designs
• Manufacture Ankle, Knee, and Stand
• Leg Member Design
• Data position reporting system
• Calibrate

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Conclusion

• On Budget and close to Schedule
• Design is complete for Hip
• Design is near complete other parts
• Design concept is functional
• Electronics and mechanical parts will be
  developed by the end of March

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For Further questions contact our Team
Leader Dante Bertelli at dante_at_g6net.com