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Automatic guided vehicle and method for controlling travel thereof

  • US 5,170,351 A
  • Filed: 09/18/1990
  • Issued: 12/08/1992
  • Est. Priority Date: 09/18/1990
  • Status: Expired due to Fees
First Claim
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1. An automatic guided vehicle comprising:

  • a vehicle body;

    driving means mounted on the vehicle body for driving the vehicle at variable speeds;

    detecting means for detecting the distance between the vehicle and an object and outputting a signal indicative of said distance; and

    control means operatively connected to said detecting means and to said driving means for receiving said signal from said detecting means, and for selectively operating under a first mode in which said driving means is controlled by the control means to both slow down the vehicle when the signal output by said detecting means is indicative of the detected distance being less than a first mode predetermined distance and to speed up the vehicle when the signal is indicative of the detected distance being greater than a first mode predetermined distance and a second mode in which said driving means is controlled to slow down the speed of the vehicle as long as the signal output by said detecting means is indicative of said distance being less than a second mode predetermined distance greater than each said first mode predetermined distance,whereby a group of the vehicles will travel closer together when said control means is operating in said first mode than when said control means is operating in said second mode.

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