Estimation device, estimation method, and program

    公开(公告)号:US12040734B2

    公开(公告)日:2024-07-16

    申请号:US17912299

    申请日:2021-03-09

    申请人: Nidec Corporation

    发明人: Hiroyuki Kawakami

    IPC分类号: H02K29/08 G01D5/14 H02P6/16

    CPC分类号: H02P6/16 G01D5/145 H02K29/08

    摘要: An estimation device that estimates a state of a device that detects a position of a rotating body includes a position sensor to output a detection signal that is a signal representing a detection result of a position of a magnet rotatable in conjunction with the rotating body according to a magnetic flux of the magnet, an extractor to extract a feature amount of the detection signal from the detection signal for each of the positions, and an estimator to derive an evaluation value representing a comparison result between a feature amount of the detection signal for each of the positions and a reference value for each of the positions, and to estimate a degree of change in sensitivity to detect the position based on the evaluation value.

    Linear motor system and operating method for the same

    公开(公告)号:US11888373B2

    公开(公告)日:2024-01-30

    申请号:US17444912

    申请日:2021-08-12

    摘要: The invention relates to a linear motor system, in particular a transport system, e.g. a multi-carrier, having a plurality of or for a plurality of carriers, and having a guide track for the carriers, wherein, at the guide track, a first magnetic sensor for determining a magnetic field with respect to a first spatial direction and for outputting a first sensor signal and a second magnetic sensor for determining a magnetic field with respect to a second spatial direction and for outputting a second sensor signal are provided, wherein the control device is configured to determine position information relating to a carrier on the basis of the first sensor signal and to determine identification information relating to a carrier on the basis of the second sensor signal.

    Rotary machine having a position sensor

    公开(公告)号:US11876416B2

    公开(公告)日:2024-01-16

    申请号:US17384229

    申请日:2021-07-23

    申请人: Robert Bosch GmbH

    IPC分类号: H02K29/08 G01D5/14 H02K11/215

    摘要: A rotary machine, in particular electric motor, includes a position sensing means for sensing a rotational position of a pole wheel that is rotatable about an axis of rotation. The pole wheel has a circumferential edge, and the position sensing means has at least one first position sensor for sensing a change in a magnetic field, at least one magnetic element arranged on the pole wheel, and at least one circuit card on which electronic components are arranged. The first position sensor is arranged at least indirectly on the circuit card. The first position sensor extends at least partially into a space of the pole wheel that surrounded by the circumferential edge.

    MOTOR DRIVE DEVICE, MOTOR SYSTEM AND ELECTRONIC DEVICE

    公开(公告)号:US20230253861A1

    公开(公告)日:2023-08-10

    申请号:US18153033

    申请日:2023-01-11

    申请人: ROHM CO., LTD.

    摘要: The present disclosure provides a motor drive device. The motor drive device includes a terminal, a logic unit, a drive unit and a determination unit. The terminal is configured to receive a Hall signal output from a Hall sensor. The logic unit is configured to generate a control signal based on the Hall signal. The drive unit is configured to generate a driving signal based on the control signal. The determination unit is configured to determine a level of a voltage applied to the terminal. The logic unit is configured to switch a function setting based on a determination result of the determination unit.