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Airspeed adaptive cruise control for ground vehicles

  • US 10,071,735 B2
  • Filed: 04/13/2015
  • Issued: 09/11/2018
  • Est. Priority Date: 04/13/2015
  • Status: Active Grant
First Claim
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1. A cruise control method implemented by a computerized airspeed adaptive cruise control system in a ground vehicle with an airspeed sensor comprising the steps of:

  • detecting a magnitude of ground vehicle headwind by at least one airspeed sensor;

    detecting a magnitude of ground vehicle tailwind by the at least one airspeed sensor;

    detecting a vehicle groundspeed by a groundspeed sensor;

    calculating a vehicle airspeed as the vehicle groundspeed plus the at least magnitude of vehicle headwind minus the magnitude of vehicle tailwind;

    accepting a positive vehicle airspeed set point from either a vehicle operator, an autonomous driving computer or a computerized controller wherein said set point is optionally subject to limiting parameters including energy efficiency, arrival time, maximum or minimum acceptable groundspeed or comfort;

    comparing the vehicle airspeed to the vehicle airspeed set point; and

    controlling a throttle position actuator to increase vehicle ground speed when an absolute value of the vehicle airspeed is less than the vehicle airspeed set point by more than a first threshold amount and/or decrease vehicle ground speed when an absolute value of the vehicle airspeed is greater than the vehicle airspeed set point by more than a second threshold amount.

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