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    System and Method of Network Synchronized Time in Safety Applications
    1.
    发明申请
    System and Method of Network Synchronized Time in Safety Applications 有权

    公开(公告)号：US20220100172A1

    公开(公告)日：2022-03-31

    申请号：US17037940

    申请日：2020-09-30

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Steven T. Seidlitz ,  Mark A. Chaffee

    IPC: G05B19/4155

    Abstract: To improve integrity of time synchronization, a node in the safety rated system takes steps to ensure the time to which it is synchronized has not become corrupted. The node receives a synchronize request message from an adjacent network device, which includes the master time, and the node generates an offset value corresponding to a difference between a local time and the master time. The node stores the offset time into a safety memory to ensure that the offset value has data integrity and does not become corrupted. The node performs periodic skew detection between two devices to verify that the clocks remain synchronized. In addition, the node performs a local drift detection to detect if the frequency of the local oscillator on which the local clock value is based begins to change.

    System and method of network synchronized time in safety applications
    3.
    发明授权
    System and method of network synchronized time in safety applications 有权

    公开(公告)号：US11599090B2

    公开(公告)日：2023-03-07

    申请号：US17037940

    申请日：2020-09-30

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Steven T. Seidlitz ,  Mark A. Chaffee

    IPC: G05B19/41 ,  H04J3/06 ,  G05B19/4155

    Abstract: To improve integrity of time synchronization, a node in the safety rated system takes steps to ensure the time to which it is synchronized has not become corrupted. The node receives a synchronize request message from an adjacent network device, which includes the master time, and the node generates an offset value corresponding to a difference between a local time and the master time. The node stores the offset time into a safety memory to ensure that the offset value has data integrity and does not become corrupted. The node performs periodic skew detection between two devices to verify that the clocks remain synchronized. In addition, the node performs a local drift detection to detect if the frequency of the local oscillator on which the local clock value is based begins to change.

    System and method of integrated vibration monitoring in motor drives
    4.
    发明授权
    System and method of integrated vibration monitoring in motor drives 有权

    公开(公告)号：US10753790B2

    公开(公告)日：2020-08-25

    申请号：US16449875

    申请日：2019-06-24

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Robert J. Miklosovic ,  Mark A. Chaffee

    IPC: G01H1/00 ,  G01N29/46 ,  G01N29/14 ,  G01N29/44 ,  G01H3/04 ,  G01M7/00 ,  G01M13/028 ,  G01M13/045 ,  H02P6/10 ,  H02P23/12 ,  H02P23/14

    Abstract: An improved system and method for analyzing motor performance to detect vibration of an electric machine controlled by a motor drive is disclosed. A load observer determines an estimated torque present as a load on the motor as a function of input signals corresponding to a desired torque to be generated by the motor and to a measured angular position of the motor during operation. The motor drive determines a frequency response of the estimated torque to identify at what magnitude and frequency any vibration components are present within the estimated torque signal. The motor drive compares the frequency response of the estimated torque signal to set points. If the measured magnitude of vibration at a particular frequency, as seen in the frequency response, exceeds a threshold set in one of the set points for that frequency, the motor drive generates an output signal indicting an excessive vibration is present.

    Method and Apparatus for Online Simulation of Complex Motion Systems
    5.
    发明申请
    Method and Apparatus for Online Simulation of Complex Motion Systems 审中-公开

    公开(公告)号：US20190146434A1

    公开(公告)日：2019-05-16

    申请号：US15812565

    申请日：2017-11-14

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Brian Fast ,  Robert Guenther ,  Joachim Thomsen ,  Robert J. Miklosovic ,  Mark A. Chaffee

    IPC: G05B17/02 ,  G05B19/402

    Abstract: A system and method for online simulation of a controlled machine or process utilizes a simplified model of the system dynamics and may be used with hardware in the loop to evaluate performance of the controlled system or with software in the loop to perform commissioning of the control program prior to completion of the mechanical installation. The simplified model includes dominant order dynamics of the controlled system such as the inertia of the system and a damping factor. Further, the online simulation is scheduled to execute at an update rate slower than the update rate of the control loops within the motor drive. The simplified model and reduced update rate reduce the computational burden on the processor such that the simulation may be performed either on the industrial controller or on the motor drive.

    System and method of integrated vibration monitoring in motor drives
    6.
    发明授权
    System and method of integrated vibration monitoring in motor drives 有权

    公开(公告)号：US10378951B2

    公开(公告)日：2019-08-13

    申请号：US15483644

    申请日：2017-04-10

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Robert J. Miklosovic ,  Mark A. Chaffee

    IPC: G01H1/00 ,  G01N29/46 ,  G01N29/14 ,  G01N29/44 ,  G01H3/04 ,  G01M7/00 ,  G01M13/028 ,  G01M13/045 ,  H02P6/10 ,  H02P23/12 ,  H02P23/14

    Abstract: An improved system and method for analyzing motor performance to detect vibration of an electric machine controlled by a motor drive is disclosed. A load observer determines an estimated torque present as a load on the motor as a function of input signals corresponding to a desired torque to be generated by the motor and to a measured angular position of the motor during operation. The motor drive determines a frequency response of the estimated torque to identify at what magnitude and frequency any vibration components are present within the estimated torque signal. The motor drive compares the frequency response of the estimated torque signal to set points. If the measured magnitude of vibration at a particular frequency, as seen in the frequency response, exceeds a threshold set in one of the set points for that frequency, the motor drive generates an output signal indicating an excessive vibration is present.

    Method and apparatus for online simulation of complex motion systems
    7.
    发明授权
    Method and apparatus for online simulation of complex motion systems 有权

    公开(公告)号：US11086281B2

    公开(公告)日：2021-08-10

    申请号：US15812565

    申请日：2017-11-14

    Applicant: Rockwell Automation Technologies, Inc.

    Inventor： Brian Fast ,  Robert Guenther ,  Joachim Thomsen ,  Robert J. Miklosovic ,  Mark A. Chaffee

    IPC: G05B17/02 ,  G05B19/402 ,  G05B19/05

    Abstract: A system and method for online simulation of a controlled machine or process utilizes a simplified model of the system dynamics and may be used with hardware in the loop to evaluate performance of the controlled system or with software in the loop to perform commissioning of the control program prior to completion of the mechanical installation. The simplified model includes dominant order dynamics of the controlled system such as the inertia of the system and a damping factor. Further, the online simulation is scheduled to execute at an update rate slower than the update rate of the control loops within the motor drive. The simplified model and reduced update rate reduce the computational burden on the processor such that the simulation may be performed either on the industrial controller or on the motor drive.

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