Patents by Inventor Carl H. Russell, III

Carl H. Russell, III 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).

  • Algorithm for optimizing data sampling in a discrete periodic system with a bounded rate of change for the discrete system periods
    Patent number: 5323309
    Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficient to capture any residual motion of the robot.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: June 21, 1994
    Assignees: Siemens Industrial Automation, Inc., Comau S.p.A.
    Inventors: Donald K. Taylor, Richard J. Maczka, Carl H. Russell, III
  • Sampling bipolar peak detector for sensing a non-symmetrical decay of an AC voltage signal
    Patent number: 5229697
    Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficient to capture any residual motion of the robot.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: July 20, 1993
    Assignees: Siemens Industrial Automation, Inc., Comau S.p.A.
    Inventors: Donald K. Taylor, Richard J. Maczka, Carl H. Russell, III
  • Open circuit detection for a pulsed resolver position sensing system
    Patent number: 5204603
    Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficient to capture any residual motion of the robot.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 20, 1993
    Assignees: Siemens Industrial Automation, Inc., Comau S.p.A.
    Inventors: Donald K. Taylor, Richard J. Maczka, Carl H. Russell, III
  • Method for optimizing sampling rates for position tracking for motion control systems
    Patent number: 5200683
    Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficient to capture any residual motion of the robot.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 6, 1993
    Assignee: Siemens Industrial Automation, Inc.
    Inventors: Donald K. Taylor, Richard J. Maczka, Carl H. Russell, III
  • Software controllable circuit for resolver excitation switching in a motion control system
    Patent number: 5198739
    Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficeint to capture any residual motion of the robot.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: March 30, 1993
    Assignee: Siemens Industrial Automation, Inc.
    Inventors: Donald K. Taylor, Richard J. Maczka, Carl H. Russell, III
  • Method for eliminating position tracking errors in the presence of resolver excitation errors for motion control systems
    Patent number: 5198735
    Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficient to capture any residual motion of the robot.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: March 30, 1993
    Assignee: Siemens Industrial Automation, Inc.
    Inventors: Donald K. Taylor, Richard J. Maczka, Carl H. Russell, III