Patents by Inventor Albert A. Wray

Albert A. Wray 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: 10011974
    Abstract: An earthmoving machine comprises a sensor, an implement, and control architecture comprising a controller and configured to facilitate movement in response to a signal indicative of a measured implement position and an implement control value comprising a gain value associated with implement speed. The controller is programmed to execute machine readable instructions to generate a noise value that is based on an error between the signal and a target signal, determine whether the noise value is acceptable to lock the gain value, adjust the gain value to control the implement speed when the noise value is unacceptable until the noise value is acceptable, and operate the machine based on the locked gain value.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: July 3, 2018
    Assignee: Caterpillar Trimble Control Technologies LLC
    Inventors: Yanchai Zhang, Francisco R. Green, Albert A. Wray, Insu Chang
  • Publication number: 20170175360
    Abstract: An earthmoving machine comprises a sensor, an implement, and control architecture comprising a controller and configured to facilitate movement in response to a signal indicative of a measured implement position and an implement control value comprising a gain value associated with implement speed. The controller is programmed to execute machine readable instructions to generate a noise value that is based on an error between the signal and a target signal, determine whether the noise value is acceptable to lock the gain value, adjust the gain value to control the implement speed when the noise value is unacceptable until the noise value is acceptable, and operate the machine based on the locked gain value.
    Type: Application
    Filed: February 7, 2017
    Publication date: June 22, 2017
    Applicant: Caterpillar Trimble Control Technologies LLC
    Inventors: Yanchai Zhang, Francisco R. Green, Albert A. Wray, Insu Chang
  • Patent number: 9598844
    Abstract: An earthmoving machine comprises a sensor, an implement, and control architecture comprising a controller and configured to facilitate movement in response to a signal indicative of a measured implement position and an implement control value comprising a gain value associated with implement speed. The controller is programmed to execute machine readable instructions to generate a surface-based cost function (SBCF) value based on the signal, determine whether the SBCF value is acceptable to lock the gain value, and generate a noise value that is based on an error between the signal and a target signal when the SBCF value is unacceptable, determine whether the noise value is acceptable to lock the gain value, adjust the gain value to control the implement speed when the noise value is unacceptable until the SBCF value or the noise value is acceptable, and operate the machine based on the locked gain value.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: March 21, 2017
    Assignee: Caterpillar Trimble Control Technologies LLC
    Inventors: Yanchai Zhang, Francisco R. Green, Albert A. Wray, Insu Chang
  • Publication number: 20020127058
    Abstract: A control system controls movement of individual hydraulically moveable ends of a screed head carried by a boom of a machine so as to maintain a selected elevational position between each end of the screed head and a reference in a concrete paving application. One of a pair of elevation receivers is mounted at each end of the screed head, providing a first and second signals indicating the position of the first and second ends of the screed head in relation to the reference. A sensor, mounted on the screed head, senses the orientation of the screed head along its length from the first end to the second end and providing a third signal indicating such orientation.
    Type: Application
    Filed: January 19, 2001
    Publication date: September 12, 2002
    Inventors: Mark E. Zachman, Albert A. Wray, Jerald W. Yost