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Tilt rate compensation implement system and method

  • US 5,551,518 A
  • Filed: 12/19/1994
  • Issued: 09/03/1996
  • Est. Priority Date: 09/28/1994
  • Status: Expired due to Term
First Claim
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1. A tilt angle control system for a geographic surface altering implement;

  • comprising;

    a frame;

    first and second lift jacks each having first and second end portions and being connected at the first end portion to said frame and at the second end portion to an implement, said second end portions being extensibly movable relative to the first end portions in response to elevational movement of said implement;

    first sensing means for sensing the position of the first end portion of the first lift jack relative to the second end portion of the first lift jack and delivering a responsive first position signal;

    second sensing means for sensing the position of the first end portion of the second lift jack relative to the second end portion of the second lift jack and delivering a responsive second position signal;

    third sensing means for sensing a tilt angle of the frame relative to a predetermined plane and delivering a responsive frame tilt angle signal;

    fourth sensing means for sensing the rate of change of the frame tilt angle relative to the predetermined plane and delivering a responsive rate of change signal;

    control means for receiving said first, second, frame tilt angle, and rate of change signals, determining an implement tilt angle relative to the frame based on the first and second signals, determining a frame tilt angle based on the frame tilt angle signal, determining a corrected frame tilt angle based on the frame tilt angle and rate of change signals, combining the implement tilt angle and the corrected frame tilt angle and delivering a responsive corrected actual implement tilt angle signal.

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