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公开(公告)号：US12106824B2
公开(公告)日：2024-10-01
申请号：US16954653
申请日：2018-12-14
发明人： Scott Jordan
摘要： A positioning system includes a body, a flexible band disposed at least partially in the body, and a plurality of rollers in contact with the flexible band, wherein at least one of the rollers is constrained from translation both axially and radially.
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公开(公告)号：US11870385B2
公开(公告)日：2024-01-09
申请号：US17673596
申请日：2022-02-16
发明人： Christopher C. Chang
IPC分类号： H02K41/035 , H02K41/00 , H02K41/02 , H02P7/025
CPC分类号： H02P7/025 , H02K41/0356
摘要： A linear motor includes a magnetic assembly and a coil assembly having at least one coil positioned to magnetically engage the magnetic assembly for linear displacement between the magnetic assembly and the coil assembly. The linear motor further includes an encoder strip attached to one of the magnetic assembly and the coil assembly and an encoder reader attached to the other one of the magnetic assembly and the coil assembly to read the encoder strip during the linear displacement between the magnetic assembly and the coil assembly.
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3.发明公开公开(公告)号：US20230147064A1
公开(公告)日：2023-05-11
申请号：US17979305
申请日：2022-11-02
申请人： ROHM CO., LTD.
发明人： Hisashi SUGIE
CPC分类号： H02P7/025 , H02P7/292 , G11B19/2036
摘要： A motor driver circuit includes: an error detection amplifier configured to receive a current feedback signal indicating a drive current of a motor as an object to be driven and an analog command signal indicating a target amount of the drive current, and generate an analog error signal indicating an error between the drive current and the target amount of the drive current; an A/D converter configured to convert the analog error signal generated by the error detection amplifier into a digital error signal; a digital compensator configured to generate a digital control amount based on the digital error signal output by the A/D converter; a D/A converter configured to convert the digital control amount into an analog control signal; and an output stage configured to supply a drive signal according to the analog control signal to the motor.
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公开(公告)号：US20220283400A1
公开(公告)日：2022-09-08
申请号：US17664805
申请日：2022-05-24
申请人： LG INNOTEK CO., LTD.
发明人： Sang Ok Park , Hyun Rae Cho , Seong Min Lee , Jun Taek Lee
摘要： An exemplary embodiment of the present invention a rotor including a lens and formed with a first driving unit, a stator formed with a second driving unit driving the rotor in response to electromagnetic interaction with the first driving unit, and a base on which the stator is fixed, wherein the rotor is brought into contact with the base, in a case the lens is in a UP posture, and the rotor is distanced from the base, in a case the lens is in a DOWN posture.
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公开(公告)号：US11248673B2
公开(公告)日：2022-02-15
申请号：US16057970
申请日：2018-08-08
发明人： Andrew Kirby , James A. Cooke
IPC分类号： H02P3/04 , H02P7/025 , H02P3/16 , H02P15/00 , F16D66/00 , F16D59/02 , F16D65/28 , F16D63/00 , H02P3/06 , G01D11/16 , F16D121/20 , F16D121/18 , G05B19/406 , G05B19/416 , F16D121/22 , F16D125/64 , F16D127/02 , F16D129/04
摘要： A method for controlling a braking system of an electromagnetic motor, the electromagnetic motor having a moveable output shaft, comprising the steps of: receiving a velocity signal and/or an acceleration signal based on movement of the output shaft, said velocity signal and/or acceleration signal having a respective frequency spectrum; identifying an event from the velocity and/or the acceleration signal using the respective frequency spectrum, wherein said event corresponds to an uncontrolled movement of the output shaft and has a characteristic frequency spectrum.
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公开(公告)号：US11037596B2
公开(公告)日：2021-06-15
申请号：US16578566
申请日：2019-09-23
申请人： Rohm Co., Ltd.
发明人： Shinichi Miura
摘要： A motor driver device for driving a motor with a full-bridge circuit includes: a switching driver configured to perform switching driving in which a switching voltage is supplied from the full-bridge circuit to the motor; a linear driver configured to perform linear driving in which a continuous linear voltage is supplied from the full-bridge circuit to the motor; and a control circuit configured to set a driving mode of the motor to a switching driving mode in which the switching driving is performed or a linear driving mode in which the linear driving is performed.
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公开(公告)号：US20200096784A1
公开(公告)日：2020-03-26
申请号：US16697028
申请日：2019-11-26
摘要： Various embodiments provide an optical image stabilization circuit including a drive circuit having a power waveform generator and a power waveform conversion circuit. The power waveform generator generates a power waveform. The power waveform conversion circuit converts the power waveform to a power drive signal. An actuator is then driven by the power drive signal to move a lens accordingly and compensate for any movements and vibrations of a housing of the lens.
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公开(公告)号：US10587212B1
公开(公告)日：2020-03-10
申请号：US16186960
申请日：2018-11-12
发明人： David D. Van Dorpe , Mark R. Cooper , Shankernarayan Ramanarayanan , Patrick E. Ozimek , Jadav Das
IPC分类号： H02P7/025 , H02P29/028 , H02K11/21 , B65G35/06 , H02K41/035 , H02K11/30
摘要： A mover is configured to be electromagnetically propelled along a track in a linear motor track system with a force that is calculated to include compensation for gravity. A multi-axis accelerometer arranged in each segment of the track can detect an orientation or angle of the track segment for determining gravity with respect to the particular section. As a result, if the track is at an incline, such as a ramp, a desired force for moving a mover along the track can be compensated to include gravity due to the incline for achieving a desired motion result. In addition, the detected orientation of the track can be compared to an expected orientation stored by a control program to avoid a loss of performance due to physical changes in the track not matching an expected/programmed configuration of the track.
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公开(公告)号：US10520748B2
公开(公告)日：2019-12-31
申请号：US15944421
申请日：2018-04-03
IPC分类号： G02B27/64 , H02K41/035 , H02P7/025
摘要： Various embodiments provide an optical image stabilization circuit including a drive circuit having a power waveform generator and a power waveform conversion circuit. The power waveform generator generates a power waveform. The power waveform conversion circuit converts the power waveform to a power drive signal. An actuator is then driven by the power drive signal to move a lens accordingly and compensate for any movements and vibrations of a housing of the lens.
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公开(公告)号：US10432117B1
公开(公告)日：2019-10-01
申请号：US16015699
申请日：2018-06-22
IPC分类号： H02P7/025 , H02K41/035 , H02K11/21 , B65G23/00 , B65G51/03 , B65G43/00 , H02K11/35 , H04L29/08
摘要： An improved system and method for monitoring operation of movers in an independent cart system reduces the required communication bandwidth for monitoring operation of movers in a system where control is distributed among multiple controllers spaced along the track. As the mover is travelling along the track segment, each distributed controller monitors at least one operating characteristic of the mover. As a mover travels along the track, each distributed controller transmits the operating characteristic to a successive distributed controller, such the monitored operating characteristic is transmitted along the track as the mover travels along the track. At a reduced rate or upon request from a central controller, each distributed controller may transmit the status of a mover present on the corresponding track segment controlled by that distributed controller to the central controller.
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