Patents by Inventor Matthew L. Spencer

Matthew L. Spencer 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).

  • Power capacity expansion on agricultural machine
    Patent number: 10660256
    Abstract: A towed agricultural machine includes a converter, configured to convert a first voltage potential generated by a generator to a second voltage potential. The second voltage potential powers a component of the towed agricultural machine. Further, the towed agricultural machine also includes a switch that senses the absence of the second voltage potential from the converter and switches to powering the subcomponent with a second voltage potential received from a source external to the towed agricultural machine. The second voltage potential output by the converter can also be combined, on a power bus, with the second voltage potential from the external source or another source.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: May 26, 2020
    Assignee: Deere & Company
    Inventors: Eric R. Funk, Matt D. Bartelson, Quintin D. Rigert, Grant J. Wonderlich, Matthew L. Spencer, Pranay K. Bajjuri
  • POWER CAPACITY EXPANSION ON AGRICULTURAL MACHINE
    Publication number: 20180343785
    Abstract: A towed agricultural machine includes a converter, configured to convert a first voltage potential generated by a generator to a second voltage potential. The second voltage potential powers a component of the towed agricultural machine. Further, the towed agricultural machine also includes a switch that senses the absence of the second voltage potential from the converter and switches to powering the subcomponent with a second voltage potential received from a source external to the towed agricultural machine.
    Type: Application
    Filed: June 5, 2017
    Publication date: December 6, 2018
    Inventors: Eric R. Funk, Matt D. Bartelson, Quintin D. Rigert, Grant J. Wonderlich, Matthew L. Spencer, Pranay K. Bajjuri
  • Method of backlash compensation
    Patent number: 9052005
    Abstract: A control method is provided for an electric motor which drives an apparatus through a gear unit. The method includes generating a gear output and input speed signals, low pass filtering the gear speed signals and subtracting the filtered gear input speed signal from the filtered gear output speed signal to provide a relative speed signal. The method also includes high pass filtering the relative speed signal, multiplying the filtered relative speed signal by damping gain value to generate a backlash compensation torque value, and subtracting the backlash compensation torque value from an apparatus control torque value to generate the desired motor torque value.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: June 9, 2015
    Assignee: DEERE & COMPANY
    Inventors: Patrick W. Cross, Matthew L. Spencer, Byron K. Miller, Jeffrey D. Dawson
  • METHOD OF BACKLASH COMPENSATION
    Publication number: 20140366667
    Abstract: A control method is provided for an electric motor which drives an apparatus through a gear unit. The method includes generating a gear output and input speed signals, low pass filtering the gear speed signals and subtracting the filtered gear input speed signal from the filtered gear output speed signal to provide a relative speed signal. The method also includes high pass filtering the relative speed signal, multiplying the filtered relative speed signal by damping gain value to generate a backlash compensation torque value, and subtracting the backlash compensation torque value from an apparatus control torque value to generate the desired motor torque value.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 18, 2014
    Inventors: Patrick W. Cross, Matthew L. Spencer, Byron K. Miller, Jeffrey D. Dawson