Controlling a digging operation of an industrial machine
AssigneeHarnischfeger Technologies, Inc.
InventorsJoseph Colwell, William Hren, Mark Emerson, 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. A method includes determining a hoist bail pull associated with the industrial machine, determining a crowd torque limit value for a crowd drive based on the determined hoist bail pull of the industrial machine, and setting a crowd torque limit of the crowd drive to the crowd torque limit value to limit a torque associated with a crowd motor to the crowd torque limit value.
Claims16
A method of controlling a digging operation of an industrial machine, the industrial machine including a dipper handle 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 a hoist bail pull;
- comparing the hoist bail pull to one or more hoist bail pull limits;
- and
- setting a crowd torque limit for the crowd motor drive based on the comparison of the angle of the dipper handle to the one or more dipper handle angle limits and the comparison of the hoist bail pull to the one or more hoist bail pull limits,
- wherein setting the crowd torque limit includes setting the crowd torque limit to a first crowd torque limit when the hoist bail pull is less than or approximately equal to a first of the one or more hoist bail pull limits, and setting the crowd torque limit to a second crowd torque limit when the hoist bail pull is greater than the first of the one or more hoist bail pull limits.
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 angle of the dipper handle,
- compare the angle of the dipper handle to one or more dipper handle angle limits,
- determine a hoist bail pull,
- compare the hoist bail pull to one or more hoist bail pull limits, and
- set a crowd torque limit for the crowd motor drive based on the comparison of the angle of the dipper handle to the one or more dipper handle angle limits and the comparison of the hoist bail pull to the one or more hoist bail pull limits,
- wherein setting the crowd torque limit includes setting the crowd torque limit to a first crowd torque limit when the hoist bail pull is less than or approximately equal to a first of the one or more hoist bail pull limits, and setting the crowd torque limit to a second crowd torque limit when the hoist bail pull is greater than the first of the one or more hoist bail pull limits.
A method of controlling a digging operation of an industrial machine, the method comprising:
- determining a hoist bail pull associated with the industrial machine;
- determining a crowd torque limit value for a crowd drive based on the determined hoist bail pull of the industrial machine;
- and
- setting a crowd torque limit of the crowd drive to the crowd torque limit value to limit a torque associated with a crowding operation to the crowd torque limit value,
- wherein determining a crowd torque limit includes comparing the determined hoist bail pull to one or more hoist bail pull limils, and
- wherein setting the crowd torque limit includes setting the crowd torque limit to a first crowd torque limit when the determined hoist bail pull is less than or approximately equal to a first of the one or more hoist bail pull limits, and selling the crowd torque limit to a second crowd torque limit when the determined hoist bail pull is greater than the first of the one or more hoist bail pull limits.
Dependencies are inferred from the claim text.