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System for estimating a mass of a payload in a hauling machine

  • US 10,094,704 B2
  • Filed: 10/30/2015
  • Issued: 10/09/2018
  • Est. Priority Date: 10/30/2015
  • Status: Active Grant
First Claim
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1. A system for estimating a payload in a bed of a machine, the system comprising:

  • a torque sensor for determining an output torque from a prime mover;

    a grade detector for determining an angle of inclination of the machine;

    a sensor for determining machine acceleration; and

    a controller configured to;

    store an angle of inclination threshold;

    store an inclination rate of change threshold;

    store an acceleration threshold;

    store an unloaded mass of the machine in an unloaded condition;

    determine the output torque from the prime mover;

    determine the angle of inclination of the machine based upon signals from the grade detector;

    compare the angle of inclination of the machine to the angle of inclination threshold;

    generate commands to drive the machine on a work surface wherein, when driving the machine, the angle of inclination of the machine is greater than the angle of inclination threshold;

    determine a rate of change in the angle of inclination;

    compare the rate of change in the angle of inclination to the inclination rate of change threshold;

    generate commands to drive the machine on a work surface wherein, when driving the machine, the rate of change in the angle of inclination is less than the inclination rate of change threshold;

    determine the machine acceleration;

    compare the machine acceleration to the acceleration threshold;

    generate commands to drive the machine on a work surface wherein, when driving the machine, the machine acceleration is less than the acceleration threshold; and

    determine an estimate of the payload in the bed based on the output torque from the prime mover, the angle of inclination of the machine, and the unloaded mass while;

    the angle of inclination of the machine is greater than the angle of inclination threshold;

    the rate of change in the angle of inclination is less than the inclination rate of change threshold; and

    the machine acceleration is less than the acceleration threshold.

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