Patents by Inventor Michael Linstroth

Michael Linstroth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8958957
    Abstract: A method of controlling a digging operation of an industrial machine. The industrial machine includes a dipper connected to a dipper handle, a hoist rope attached to the dipper, and a hoist motor moving the hoist rope and the dipper. The method includes determining that the dipper is ready to be unloaded, activating a secondary tipping control operation by controlling a speed of the hoist motor, controlling an acceleration ramp rate of the hoist motor, and controlling a deceleration ramp rate of the hoist motor. The method further includes determining when the dipper is unloaded and deactivating the secondary tipping control operation.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: February 17, 2015
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Troy Hottmann, Mooyoung Lee, Joseph Colwell, Michael Linstroth
  • Patent number: 8935061
    Abstract: Controlling a digging operation of an industrial machine that includes a dipper, a crowd motor drive, and a controller. The crowd motor drive is configured to provide one or more control signals to a crowd motor, and the crowd motor is operable to provide a force to the dipper to move the dipper toward or away from a bank. The controller is connected to the crowd motor drive and is configured to monitor a characteristic of the industrial machine, identify an impact event associated with the dipper based on the monitored characteristic of the industrial machine, and set a crowd motoring torque limit for the crowd motor drive when the impact event is identified.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: January 13, 2015
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20140371996
    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.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20140371997
    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.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Joseph Colwell, William Hren, Mark Emerson, Michael Linstroth
  • Patent number: 8825317
    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.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: September 2, 2014
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8825315
    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.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: September 2, 2014
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, Mark Emerson, Michael Linstroth
  • Publication number: 20140188351
    Abstract: Controlling a digging operation of an industrial machine that includes a dipper, a crowd motor drive, and a controller. The crowd motor drive is configured to provide one or more control signals to a crowd motor, and the crowd motor is operable to provide a force to the dipper to move the dipper toward or away from a bank. The controller is connected to the crowd motor drive and is configured to monitor a characteristic of the industrial machine, identify an impact event associated with the dipper based on the monitored characteristic of the industrial machine, and set a crowd motoring torque limit for the crowd motor drive when the impact event is identified.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 3, 2014
    Applicant: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20140129094
    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.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 8, 2014
    Applicant: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8620536
    Abstract: Controlling a digging operation of an industrial machine that includes a dipper, a crowd motor drive, and a controller. The crowd motor drive is configured to provide one or more control signals to a crowd motor, and the crowd motor is operable to provide a force to the dipper to move the dipper toward or away from a bank. The controller is connected to the crowd motor drive and is configured to monitor a characteristic of the industrial machine, identify an impact event associated with the dipper based on the monitored characteristic of the industrial machine, and set a crowd motoring torque limit for the crowd motor drive when the impact event is identified.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 31, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8571766
    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.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: October 29, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Patent number: 8560183
    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.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: October 15, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, Mark Emerson, Michael Linstroth
  • Publication number: 20130261904
    Abstract: An industrial machine and a method of controlling an industrial machine, the industrial machine including a dipper supported by a dipper handle. The method may include determining an operating phase of the industrial machine, in a first operating phase of the industrial machine, limiting, with at least one controller, a reach of the dipper handle, and in a second operating phase of the industrial machine, enabling, with the at least one controller, an extended reach of the dipper handle greater than the reach in the first operating phase. The industrial machine may include at least one controller configured to determine an operating phase of the industrial machine, in a first operating phase of the industrial machine, limit a reach of the dipper handle, and, in a second operating phase of the industrial machine, enable an extended reach of the dipper handle greater than the reach in the first operating phase.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Inventors: Michael Linstroth, Joseph J. Colwell, Mooyoung Lee, Matthew I. Loew, Jason Knuth, Peter Gizewski, JR., Justin Zunker
  • Publication number: 20130245897
    Abstract: Systems and methods for compensating dipper swing control. One method includes, with at least one processor, determining a direction of compensation opposite a current swing direction of the dipper and applying the maximum available swing torque in the direction of compensation when an acceleration of the dipper is greater than a predetermined acceleration value. The method can also include determining a current state of the shovel and performing the above steps when the current state of the shovel is a swing-to-truck state or a return-to-tuck state. When the current state of the shovel is a dig-state, the method can include limiting the maximum available swing torque and allowing, with the at least one processor, swing torque to ramp up to the maximum available swing torque over a predetermined period of time when dipper is retracted to a predetermined crowd position.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Inventors: Michael Linstroth, Joseph Colwell, Mark Emerson
  • Publication number: 20130195595
    Abstract: A method of controlling a digging operation of an industrial machine. The industrial machine includes a dipper connected to a dipper handle, a hoist rope attached to the dipper, and a hoist motor moving the hoist rope and the dipper. The method includes determining that the dipper is ready to be unloaded, activating a secondary tipping control operation by controlling a speed of the hoist motor, controlling an acceleration ramp rate of the hoist motor, and controlling a deceleration ramp rate of the hoist motor. The method further includes determining when the dipper is unloaded and deactivating the secondary tipping control operation.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 1, 2013
    Inventors: Troy Hottmann, Mooyoung Lee, Joseph Colwell, Michael Linstroth
  • Patent number: 8359143
    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.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: January 22, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, Mark Emerson, Michael Linstroth
  • Patent number: 8355847
    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.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: January 15, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20120277959
    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.
    Type: Application
    Filed: August 31, 2011
    Publication date: November 1, 2012
    Inventors: Joseph Colwell, William Hren, David Wendt, Michael Linstroth
  • Publication number: 20120277961
    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.
    Type: Application
    Filed: May 15, 2012
    Publication date: November 1, 2012
    Inventors: Joseph Colwell, William Hren, Mark Emerson, Michael Linstroth
  • Publication number: 20120277960
    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.
    Type: Application
    Filed: August 31, 2011
    Publication date: November 1, 2012
    Inventors: Joseph Colwell, William Hren, Mark Emerson, Michael Linstroth