Patent ID: 8359143

Claim:
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.