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Variable Support Platform to Simulate Ankle Injuries Judd Terrell Advisor: Kevin Robinson.

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Presentation on theme: "Variable Support Platform to Simulate Ankle Injuries Judd Terrell Advisor: Kevin Robinson."— Presentation transcript:

1 Variable Support Platform to Simulate Ankle Injuries Judd Terrell Advisor: Kevin Robinson

2 Goal 1.6 million ankle sprains per year (AAOS) Need to simulate muscle responses to a loss of balance Simulate balance loss without injuring subject

3 General Design 3’ x 3’ variable support section Section supported at all times by springs: 6 inch outer diameter 8 inch height Spring constant: 5-10 lb/inch

4 Other Supports Wooden supports On all four sides Support platform when weight is applied Platform travel controlled by notch

5 Design for Variable Support Solenoid-Bolt coupling 12VDC cylindrical solenoid Controlled by voltage

6 Electronic Control System Done: Convert rotary switch input to binary Alternate voltage to solenoids State machine diagram To do: Design logic control circuit Build and implement circuit

7 Estimated Cost ItemPriceQuantityTotal 4’ x 4’ x ¾”$12.491 2” barrel bolt$1.978$15.76 12VDC solenoids $3.758$30.00 D-submini connector $1.492$2.98 $197.55

8 To do: Design/build control circuitry Obtain solenoids Contact local spring manufacturers Develop trigger to signal shift in platform

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