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Automatic travel control method for an unmanned vehicle

  • US 5,915,491 A
  • Filed: 04/23/1997
  • Issued: 06/29/1999
  • Est. Priority Date: 08/27/1992
  • Status: Expired due to Fees
First Claim
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1. An automatic travel control method for an unmanned vehicle system, wherein said system controls steering of the unmanned vehicle over a guide path which guide path contains at least any two of a straight portion, a right curved portion and a left curved portion, said method comprising the steps of:

  • detecting existence of curvature of the guide path;

    generating right and left digital signals indicating the degree of the curvature of the guide path using only a single pair of voltage generating devices;

    controlling the steering of the vehicle based only on both the right and left digital signals when the vehicle is traversing any straight portion of the guide path;

    controlling the steering of the vehicle based only on the right digital signal when the vehicle is traversing any right curve portion of the guide path; and

    controlling the steering of the vehicle based only on the left digital when the vehicle is traversing any left curved portion of the guide path.

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