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Rollerblade Braking System

Rollerblade Braking System. Design Team #11. Design Team #11. Team Members Jeffery Aucoin Dima Eshtaya Sean Milley Jamie Zwicker Team Supervisor Dr. Robert Bauer. Introduction. Existing Design. Proposed Design. http://www.jacqdesign.com/img/blog/photos/RollerbladeCrossfire4D.jpg.

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Rollerblade Braking System

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  1. Rollerblade Braking System Design Team #11

  2. Design Team #11 • Team Members • Jeffery Aucoin • Dima Eshtaya • Sean Milley • Jamie Zwicker • Team Supervisor • Dr. Robert Bauer

  3. Introduction Existing Design Proposed Design http://www.jacqdesign.com/img/blog/photos/RollerbladeCrossfire4D.jpg

  4. Existing Design Rubber Stop Pad

  5. Existing Design • Rubber Pad attached to the heel of one rollerblade • To stop user must push the pad against the ground to create a braking force http://www.skatescool.com/inline-skating/learn-how-to-t-stop-on-inline-skates/

  6. Areas of Improvement • Balance and Stability • Difficulty/Technique • Pad Wear and Lifetime • Stopping Distance http://www.skatescool.com/inline-skating/learn-how-to-t-stop-on-inline-skates/

  7. Stability Existing Design Proposed Design

  8. Testing • Maximum speed: 30km/h • Average stopping distance from 20km/h: 13m

  9. Design Requirements Requirements of Proposed Design

  10. Design Requirements • Removable • Support a 225lb user • Improved braking distance • Maintain mobility/stability • Controlled stop • Increased lifetime • Serviceable

  11. Design Selection Foot Support Wheel Frame and Assembly Brake Actuator and Application Power Supply Control Unit

  12. Foot Support • Ability to attach over existing footwear • Modify existing snowboard binding • Add third strap • Adjust mobility of back support http://5150snowboarding.com/product/ff1500

  13. Wheel Frame • Housing for all components of the skate • ⅛” Square Channel Iron • Dimensioned to incorporate range of shoe sizes

  14. Braking Application Electric Drum Disk

  15. Electric/Magnetic Brakes • Good for high speed braking • Provides energy feedback • Brake force diminishes as speed decreases • Cannot lock up http://www.flightglobal.com/blogs/runway-girl/Gear%20shot%201.JPG

  16. Drum Brakes • Least actuating force • Complex setup • Not easily serviceable • Poor heat dissipation • Prone to brake fade http://auto.howstuffworks.com/auto-parts/brakes/brake-types/disc-brake1.htm

  17. Disk Brakes • High actuating forces • High rate of heat dissipation • Less susceptible to brake fade • Easily serviceable • Require little maintenance http://mtobikes.com/wp-content/magura-louise-mountain-bike-disc-brake.jpg

  18. Brake Torque Calculations

  19. Disk Brake Calculations

  20. Wheel Assembly • All rotating pieces • Axles • Bearings • Wheels • Brake rotors

  21. Brake Actuators Hydraulic Pump Solenoid / Piston Setup Electric Motor with Power Screw and Piston Setup

  22. Hydraulic Pump • Provides adequate pressure • Too Large in size / weight • High cost http://www.mesltd.co.uk/images/ZSIM21118476.jpg

  23. Solenoid / Piston Setup • Provides adequate force • Forces diminishes with displacement • Large power requirement • High current draw http://www.fwmurphy.co.uk/images/RP23xx_solenoid_medres.jpg

  24. Electric Motor with Power Screw and Piston • High torque motor • High forces generated • High pressure output • Low power consumption • Low cost, weight and size http://www.robotshop.ca/rbban07-banebots-planetary-gearmotor.html

  25. Power Screw Calculations Power Screw Specs Output Force http://www.roton.com/application_engineering.aspx Required Actuating Force = 78.5N

  26. Power Supply Solar Alternator Battery

  27. Power Supply • Solar • Alternator • Battery Power http://www.thesource.ca/estore/product.aspx?language=en- CA&catalog=Online&category=RC+Toy+Batteries& product=2300322

  28. Remote Control Hydraulic Lines Wireless

  29. Hydraulic Lines • Simplest Control • Connects user’s hands to feet • Mobility compromised http://media.rei.com/media/dd/84f36172-d484-4224-a6cc-00a2fa3e0ec6.jpg

  30. Wireless • Additional Requirements • Eliminates physical connection • Mobility maintained http://www.robotshop.ca/pololu-high-power-motor-controller-1.html http://www.robotshop.ca/dfrobot-usb-microcontroller-atmega168.html http://www.robotshop.ca/sfe-xbee-explorer-regulated.html

  31. Budget $1,330.74

  32. Budget

  33. Conclusion Proposed Design

  34. Final Design

  35. Questions? The End

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