Technical Reference – July 17th

Minor changes were made to the rules (technical reference guide) for clarification and validation testing. Includes update to LED indicator.

File: IFEC2019-Technical-Reference_Jul17.pdf

June 17th-

  • Section 14 – Indicator lights are not required when the E-Stop is ON (open).

June 12th – The following changes were made to the Technical reference guide.

  • Section 9.a – Switched throttle connector gender to avoid accidental damage due to misconnection (poka-yoke)
  • Section 14 – Clarified E-Stop Off (closed) vs On (open) description. Eliminated mode c
  • Section 15 – Fuse model specified
  • Section 17 – Temperature protection will not be evaluated
  • Section 23.d – Free Acceleration test is now pass/fail and must achieve 2400rpm in 2 seconds
  • Section 23.e – A 2 min rest period is permitted between each throttle command set (1.5V, 2V, 3V, 4V)

Final Competition Evaluation Criteria – DRAFT

Hello IFEC 2019 Teams,

We are placed to announce the final competition evaluation criteria. We are excited to include a few fun twists to “gamify” the scoring system including:

  • Spec sheets (2 page max) and elevator pitches
  • Nonlinear point scale
  • Second attempts allowed but incur point pentalties
  • Team queue order is based on rank

IFEC19 Final Comp Evaluation 20190429

This draft document will be formalized after a 5 day comment period.

Cheers,

Kyle and Giri

Final Competition Rule Update (April 1st)

IFEC2019-Technical Reference_Apr1_

April 1st Change Log:

  • Removed 5V current spec for Hall sensors
  • Removed 5V current spec for throttle control & display
  • Updated Throttle Command table to scale from 0 to 15Arms
  • Reverted motor external fuse back to 20A (added slow blow description)
  • Removed 15Arms peak battery current limit (no battery ripple current spec)
  • Updated Drive Cycle Test – new name “Efficiency Map” duration to 24 seconds (Hold each point for 2 seconds, no repeated points)
  • Updated Full Load Test – new name “Simulated Hill Climb” and only hold for 30 sec
  • Evaluation criteria will be released by Apr. 15th

 

Previous – March 27th Change Log:

    • Motor phase current increased to 30Arms
    • All cables can be unshielded
    • Throttle Command table updated (Voltage vs RMS Phase Current) and includes error limits. Added Wide Open Throttle (WOT) command for 4.5V.
    • Motor external fuse increased to 50A
    • Maximum continuous battery current of 12A and 15A peak current (definitions include filter settings)
    • Added brake disable input
    • Dynamometer speed controlled with Constant Voltage (CV) load
    • Basic Operation Test added for the Brake State
    • Drive Cycle Test updated
    • Full Load Test Updated
    • Field Test on actual bicycle is defined

Final Competition Rules

THIS DOCUMENT HAS BEEN WITHDRAWN.

IFEC2019 Teams,

The technical reference document has been updated, see the change log below.

https://ifec2019.wiscweb.wisc.edu/documents/technical-reference-march-27th/

We are working on the progress report grading. Results will be released soon. Thank you for your patience.

Change Log:

  • Motor phase current increased to 30Arms
  • All cables can be unshielded
  • Throttle Command table updated (Voltage vs RMS Phase Current) and includes error limits. Added Wide Open Throttle (WOT) command for 4.5V.
  • Motor external fuse increased to 50A
  • Maximum continuous battery current of 12A and 15A peak current (definitions include filter settings)
  • Added brake disable input
  • Dynamometer speed controlled with Constant Voltage (CV) load
  • Basic Operation Test added for the Brake State
  • Drive Cycle Test updated
  • Full Load Test Updated
  • Field Test on actual bicycle is defined