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System and method for automatic bucket loading using crowd factors

  • US 5,968,103 A
  • Filed: 01/06/1997
  • Issued: 10/19/1999
  • Est. Priority Date: 01/06/1997
  • Status: Expired due to Term
First Claim
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1. A control system for automatically controlling a bucket of an earthmoving machine to capture material, the bucket being controllably actuated by a hydraulic tilt cylinder and lift cylinder, the system comprising:

  • sensing means for sensing machine parameters representing resistance to bucket movement through a material pile and generating machine parameter signals;

    command signal generating means for receiving said machine parameter signals, responsively determining crowd factors corresponding to machine drive line torque, and generating tilt command signals in proportion to said crowd factors; and

    a hydraulic implement controller for modifying hydraulic fluid flow to said cylinders in response to said command signals.

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