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AUTOMATIC HEADWAY CONTROL SYSTEM

  • US 3,710,383 A
  • Filed: 09/02/1970
  • Issued: 01/09/1973
  • Est. Priority Date: 09/02/1970
  • Status: Expired due to Term
First Claim
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1. An automatic headway control system for controlling a vehicle having a braking means and an accelerating means comprising ranging means mounted on the controlled vehicle for determining the actual headway between said vehicle and a preceding vehicle, speed sensing means mounted on the controlled vehicle for sensing the magnitude of its actual speed, speed computing means for determining the actual speed of the preceding vehicle and the smaller of the actual vehicle speeds, headway computing means coupled to said speed sensing means for computing the safe headway between said controlled vehicle and said preceding vehicle as a function of the smaller of the actual vehicle speeds, and command computing means for actuating the braking means and the accelerating means to equalize said actual headway and said safe headway.

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