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Dipper drop detection and mitigation in an industrial machine

  • US 9,562,341 B2
  • Filed: 04/24/2015
  • Issued: 02/07/2017
  • Est. Priority Date: 04/24/2015
  • Status: Active Grant
First Claim
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1. An industrial machine comprising:

  • a dipper;

    a user interface operable to generate a first signal related to a requested direction of dipper movement based on an operator input;

    a sensor operable to generate a second signal related to an actual direction of dipper movement;

    a hoist actuator having a hoist force operating parameter; and

    a controller including a processor and executable instructions stored in a non-transitory computer readable medium, the controller operable to retrieve from the memory and execute the instructions toreceive the first signal related to the requested direction of dipper hoist movement,receive the second signal related to the actual direction of dipper hoist movement,compare the requested direction of dipper hoist movement to the actual direction of dipper hoist movement to detect a dipper drop condition, the dipper drop condition being detected after the requested direction of dipper hoist movement is opposite the actual direction of dipper hoist movement, andmodify a setting of the hoist force operating parameter of the hoist actuator after the dipper drop condition is detected.

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