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Research_Advanced ABS

Home / Research_Advanced ABS

Advanced ABS


  • Conventional ABS
    • Tuning is very time consuming
    • NVH, excessive fluid consumtion
    • Mu transition detection can be slow
    • Combining with ESP can be difficult
    • Robustness: closed-loop vs semi-open-loop control
    • Brake pedal pumping is not allowed

 

  • New ABS Algorithm
    • Continuous feedback control algorithm
    • Reduced tuning time (2 years -> 1 week)
    • Reduced tuning parameters (600 -> 10)
    • Stopping distance reduction: 7% on high mu, 40$ on low mu
    • Flow rate variance reduction: up to 85%

 

  • Basic concept
    • Two bicycles model concept
    • Front wheel control
      • Continuous slip control without cycling
      • Max. front wheel braking capability
      • Min.front wheel fluid consumption
      • DD control effect
    • Rear wheel control
      • Cycling independently
      • Find optimal slip for front wheels

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  • Experimental Results
      • Conventional ABS

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      • Advanced ABS

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Publications


  • Seibum B. Choi, "Adaptive Speed Control of a Sensorless Permanent Magnet DC Motor for Anti-lock Brake Systems", International Journal of Automotive Technology, 2010 (acccepted).
  • Seibum B. Choi, “Antilock Brake System With a Continuous Wheel Slip Control to Maximize the Braking Performance and the Ride Quality“, IEEE Transaction on Control Systems Technology, Vol.16, No.5, September 2008.

Automotive Control Lab.
Dept. of Mechanical Engineering, KAIST
#203 N7-5, 291 Daehak-ro, Daejeon, South Korea
+82 42-350-4160,