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Drive control system for automotive vehicle

  • US 5,678,650 A
  • Filed: 06/30/1994
  • Issued: 10/21/1997
  • Est. Priority Date: 06/30/1993
  • Status: Expired due to Fees
First Claim
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1. A drive control system for a subject vehicle for performing a speed control for controlling the subject vehicle so that the subject vehicle travels at a desired cruising speed and a distance control for controlling the subject vehicle so that the subject vehicle travels at a desired safe distance from a preceding object vehicle, said drive control system comprising:

  • (a) a range finder which detects a distance between the subject vehicle and a preceding object vehicle running ahead and within sight of the range finder, and(b) control means for estimating an estimated speed of said preceding object vehicle after said range finder loses sight of the preceding object vehicle during said distance control corresponding to at least one actual driving condition of said preceding object vehicle before said range finder loses sight of said preceding object vehicle and a target cruising speed which the subject vehicle ought to attain according to the estimated speed of said preceding object vehicle, and controlling the subject vehicle so that it travels at said target cruising speed by causing said drive control system to perform said speed control.

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