Patent ID: 8825315
Filing Date: 2014-09-02
Classification: E02F

Abstract:
1. A method of controlling a digging operation of an industrial machine, the industrial machine including a dipper and a crowd motor drive, the method comprising: determining a force acting on the dipper; determining a crowd torque limit value for the crowd motor drive based on the determined force acting on the dipper; and setting, with a controller, a crowd torque limit of the crowd motor 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 force acting on the dipper to one or more force limits; and wherein setting the crowd torque limit includes setting the crowd torque limit to a first crowd torque limit when the force acting on the dipper is less than or approximately equal to a first of the one or more force limits, and setting the crowd torque limit to a second crowd torque limit when the force acting on the dipper is greater than the first of the one or more force limits.