Thrust Monitoring in a Linear Drive for Independent Cart System

    公开(公告)号:US20240230375A1

    公开(公告)日:2024-07-11

    申请号:US18152888

    申请日:2023-01-11

    Inventor: Yuhong Huang

    CPC classification number: G01D5/14 H02K41/02

    Abstract: A level of thrust generated in a linear drive system is monitored by receiving an analog feedback signal at a controller from a position sensor mounted along a track for the linear drive system. The analog feedback signal varies as a function of a position of a mover traveling along the track, and the controller receives the analog feedback signal as the mover travels between a first position and a second position proximate the position sensor. An amplitude of the analog feedback signal corresponds to a value of thrust generated by the linear drive system for the mover. A change in the analog feedback signal from a nominal value of the analog feedback signal for the mover is detected as the mover travels between the first and second positions. Operation of the linear drive system is adapted when the change in the analog feedback signal exceeds a predefined threshold.

    System and method for contactless monitoring of performance in an independent cart system

    公开(公告)号:US11767174B2

    公开(公告)日:2023-09-26

    申请号:US17355714

    申请日:2021-06-23

    Abstract: A contactless monitoring system detects operating performance of movers in an independent cart system. A contactless sensor is provided on an actuator to automatically track a mover as it travels along the track. The sensor includes a transmitter configured to transmit a signal and a receiver configured to receive the signal after it is reflected off the mover. The actuator may be configured to mover the sensor in a single axis or in multiple axes of motion. As a mover travels along the track, the sensor transmits a signal towards the mover and detects the signal after it has been reflected off the mover. A controller may synchronize motion of the actuator with motion of the mover, such that the sensor may continually transmit the signal off the mover for at least a portion of the travel by the mover along the track.

    Independent mover transport system and method of extending range of operations in an independent mover transport system

    公开(公告)号:US11599101B2

    公开(公告)日:2023-03-07

    申请号:US16802095

    申请日:2020-02-26

    Abstract: An independent mover transport system and related method. The system comprises a mover having an axis, and a track. The track includes first and second track segments, and a controller operative to drive a first coil of the first track segment to control movement of the mover along the first track segment towards the second track segment. The controller is further operative to define a first zone for the first track segment, define a second zone for the first track segment, drive the first coil to control movement of the mover with the first set of controller gain values when the location of the axis is in the first zone, and drive the first coil to control movement of the mover with second set of controller gain values when the location of the axis is in the second zone.

    System And Method For Contactless Monitoring Of Performance In An Independent Cart System

    公开(公告)号:US20220411196A1

    公开(公告)日:2022-12-29

    申请号:US17355714

    申请日:2021-06-23

    Abstract: A contactless monitoring system detects operating performance of movers in an independent cart system. A contactless sensor is provided on an actuator to automatically track a mover as it travels along the track. The sensor includes a transmitter configured to transmit a signal and a receiver configured to receive the signal after it is reflected off the mover. The actuator may be configured to mover the sensor in a single axis or in multiple axes of motion. As a mover travels along the track, the sensor transmits a signal towards the mover and detects the signal after it has been reflected off the mover. A controller may synchronize motion of the actuator with motion of the mover, such that the sensor may continually transmit the signal off the mover for at least a portion of the travel by the mover along the track.

    System and Method for Automatic Runtime Position Sensor Offset Calibration in a Linear Motion System

    公开(公告)号:US20210131839A1

    公开(公告)日:2021-05-06

    申请号:US17151387

    申请日:2021-01-18

    Abstract: A system automatically calibrates gains and/or offsets for each position feedback signal in order to reduce variations between position feedback signals for each sensor in a linear drive system. As a mover travels along a track segment, the segment controller records the position feedback signal output from each position sensor corresponding to a magnet on the mover passing the position sensor. The segment controller periodically monitors the position feedback values generated by one mover as it travels along the track segment and automatically updates the sensor gains as a function of a ratio of a target peak value to a measured peak value of the position feedback signal. The segment controller also records the position feedback signal from each sensor when no mover is traveling past the sensor. The segment controller periodically monitors the position feedback values received when no mover is present and automatically updates sensor offset values.

    System and method for automatic runtime position sensor gain calibration in a linear motion system

    公开(公告)号:US10914620B2

    公开(公告)日:2021-02-09

    申请号:US16201464

    申请日:2018-11-27

    Abstract: A system to automatically calibrate gains and/or offsets for each position feedback signal in order to reduce variations between position feedback signals for each sensor in a linear drive system is disclosed. As a mover travels along a track segment, the segment controller records the position feedback signal output from each position sensor corresponding to a magnet on the mover passing the position sensor. The segment controller determines peak values for each position feedback signal and compares the peak values against a target peak value. The segment controller then adjusts a gain value for each sensor by a ratio of the target peak value to a measured peak value. The segment controller periodically monitors the position feedback values generated by one mover as it travels along the track segment and automatically updates the sensor gains as previously described.

    System and Method for Improving Travel Across Joints in a Track for a Linear Motion System

    公开(公告)号:US20200171958A1

    公开(公告)日:2020-06-04

    申请号:US16203922

    申请日:2018-11-29

    Inventor: Yuhong Huang

    Abstract: A system for determining the position of a mover as the mover transitions between segments along a track includes a first controller on a first track segment and a second controller on a second track segment. The first and second track segments are adjacent to each other and a junction is located between the two segments. The first and second controllers are in communication with each other and share a locally determined position value with the other controller. Each controller determines a compensated position value as a function of both a locally determined position value and the shared position value received from the other controller. Each controller utilizes the compensated value of the position value as determined on that controller to control operation of the mover while it is present on the corresponding track segment.

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