A two-wheel anti-skid system using a microwave Doppler radar has been developed. The radar measures true ground speed even during a panic stop and is not affected by problems associated with conventional vehicular speed sensing units such as wheel lock and wheel slip. The true ground speed signal from the radar enabled a closed loop skid control and therefore, the system has become adoptable without any readjustment to many kinds of vehicles, light or heavy, small or big, with automatic or manual transmission. The electronic control circuits of the system use digital IC's; two counters, a set-reset flip-flop and other gates. The 24 GHZ Doppler radar is integrated on an alumina substrate (MIC). Whole electronic circuits including the MIC and the control circuit are housed in a waterproof case, part of which forms a radar horn antenna. A hybrid computer contributed a comparison of the system performance for a wide variety of system parameters. These parameters were optimized through hybrid computer simulation. Road tests indicate advantages of this system over some existing anti-skid system. /Author/TRRL/

  • Supplemental Notes:
    • This report was presented at the 16th International Automobile Technical Congress.
  • Corporate Authors:

    International Federation of Auto Techniques Engs

    3 Avenue du President Wilson
    F 75116 Paris,   France 
  • Authors:
    • Kiyoto, M
    • Takeuchi, Y
    • Lizuka, H
    • Fukumori
    • Katsumata, M
  • Publication Date: 1976


  • English

Media Info

  • Pagination: 1 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00165671
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: May 3 1978 12:00AM