Patents by Inventor Adam M. Nackers

Adam M. Nackers 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).

  • Aggressive and stable speed control
    Patent number: 9181682
    Abstract: A system and method are provided for controlling a movable element in accordance with a speed command. The movable element, which may be an excavator swing platform, is moved via an actuator that is driven in accordance with a torque command. The speed of the movable element is sensed, and a torque command is generated via PID control based on the speed command and the sensed speed. The PID control uses a set of gains including a P-gain, an I-gain, and a D-gain. At least one of these gains is set based on a counter, and the counter is set, cleared, incremented, or decremented based on one or more of the speed command, the torque command and the sensed speed. In this way, the movable element responds aggressively to operator input, but stability is maintained.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: November 10, 2015
    Assignee: Caterpillar Inc.
    Inventors: Jonathan W. Anders, Brian D. Kuras, Adam M. Nackers, Christopher P. Braet
  • Aggressive and Stable Speed Control
    Publication number: 20140316664
    Abstract: A system and method are provided for controlling a movable element in accordance with a speed command. The movable element, which may be an excavator swing platform, is moved via an actuator that is driven in accordance with a torque command. The speed of the movable element is sensed, and a torque command is generated via PID control based on the speed command and the sensed speed. The PID control uses a set of gains including a P-gain, an I-gain, and a D-gain. At least one of these gains is set based on a counter, and the counter is set, cleared, incremented, or decremented based on one or more of the speed command, the torque command and the sensed speed. In this way, the movable element responds aggressively to operator input, but stability is maintained.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 23, 2014
    Applicant: Caterpillar Inc.
    Inventors: Jonathan W. Anders, Brian D. Kuras, Adam M. Nackers, Christopher P. Braet