Controlling a digging operation of an industrial machine
AssigneeHarnischfeger Technologies, Inc.
InventorsJoseph Colwell, William Hren, David Wendt, Michael Linstroth
Life of this patent
Estimating the term…
Abstract
Systems, methods, devices, and computer readable media for controlling a digging operation of an industrial machine that includes a dipper and a crowd drive. A method includes determining an acceleration associated with the industrial machine, determining a crowd retract factor based on the acceleration, comparing the crowd retract factor to a threshold crowd retract factor, setting a crowd speed reference and a crowd retract torque for the crowd drive for a period of time based on the comparison of the crowd retract factor to the threshold crowd retract factor.
Claims23
A method of controlling a digging operation of an industrial machine, the industrial machine including a dipper handle, a dipper, and a crowd motor drive, the method comprising:
- determining an angle of the dipper handle;
- comparing the angle of the dipper handle to one or more dipper handle angle limits;
- determining an acceleration associated with the dipper;
- determining a crowd retract factor based on the acceleration;
- comparing the crowd retract factor to a threshold crowd retract factor;
- and
- setting a crowd speed reference for the crowd motor drive based on the comparison of the angle of the dipper handle to one or more dipper handle angle limits and the comparison of the crowd retract factor to the threshold crowd retract factor.
An industrial machine comprising:
- a dipper handle connected to a dipper;
- a crowd motor drive configured to provide one or more control signals to a crowd motor, the crowd motor operable to provide a force to the dipper handle to move the dipper handle toward or away from a bank;
- and
- a controller connected to the crowd motor drive, the controller configured to
- determine an acceleration associated with the dipper,
- determine a crowd retract factor based on the acceleration,
- compare the crowd retract factor to a threshold crowd retract factor, and
- set a crowd speed reference for the crowd motor drive based on the comparison of the retract factor to the threshold retract factor.
A method of controlling a digging operation of an industrial machine, the industrial machine including a dipper and a crowd drive, the method comprising:
- determining an acceleration associated with the industrial machine;
- determining a crowd retract factor based on the acceleration;
- comparing the crowd retract factor to a threshold crowd retract factor;
- and
- setting a crowd speed reference for the crowd drive based on the comparison of the crowd retract factor to the threshold crowd retract factor.
Dependencies are inferred from the claim text.