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公开(公告)号：US12090296B2
公开(公告)日：2024-09-17
申请号：US17422253
申请日：2020-01-10
发明人： Anton Blank
CPC分类号： A61M37/0076 , H02K1/16 , H02K41/02 , H02P25/06 , A61M2205/106
摘要： A linear drive for pigmentation devices, comprising a stator, an air gap which is provided in the stator and is formed so as to be offset in a defined manner, an electric coil within the stator, said coil being designed to produce a concentration of the magnetic flux in the air gap as a result of the coil being energized, an armature which is designed to carry out sliding axial movements in the stator, and a permanent magnet which is captively connected to the armature.
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公开(公告)号：US20240235449A9
公开(公告)日：2024-07-11
申请号：US18249732
申请日：2021-12-08
发明人： HIROSHI FUJIWARA , KENTA MURAKAMI
摘要： Motor control device controls motor that moves load to a target position. Motor control device includes prediction part, correction command generator, corrector, and controller. Prediction part acquires one or more target position deviations and a target settling time, and calculates a predicted target position deviation indicating a difference between a position of load and the target position at the target settling time based on the one or more target position deviations and the target settling time. When the predicted target position deviation indicates that load does not reach within a predetermined range from the target position, correction command generator generates a correction command for correcting a position command based on the predicted target position deviation. Corrector acquires the position command, corrects the position command based on the correction command, and generates a corrected position command Controller controls motor based on the corrected position command and a position of motor.
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公开(公告)号：US20240213902A1
公开(公告)日：2024-06-27
申请号：US17918553
申请日：2022-07-28
发明人： Min Chen , Lin Qian , Weiling Shi , Xueyuan Zhu , Shun Guo
摘要： A method for controlling a direct drive system, including: S1: outputting, by the actuator, a current to the winding of the stator corresponding to the actuator to cause the windings to drive the mover corresponding to the windings to move in a single direction along the guide rail; S2: sensing a position of the second position feedback means through the first position feedback means, and acquiring position information of the mover relative to the stator; and S3: changing a drive mode of the actuator according to the position information, so that the actuator adjusts, according to the drive mode, magnitude of the current outputted to the windings of the stator corresponding to the actuator. The above solution can reduce a number of power modules used in the direct drive system, so as to reduce overall manufacturing and use costs of the direct drive system.
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公开(公告)号：US20240136965A1
公开(公告)日：2024-04-25
申请号：US18249732
申请日：2021-12-08
发明人： HIROSHI FUJIWARA , KENTA MURAKAMI
摘要： Motor control device controls motor that moves load to a target position. Motor control device includes prediction part, correction command generator, corrector, and controller. Prediction part acquires one or more target position deviations and a target settling time, and calculates a predicted target position deviation indicating a difference between a position of load and the target position at the target settling time based on the one or more target position deviations and the target settling time. When the predicted target position deviation indicates that load does not reach within a predetermined range from the target position, correction command generator generates a correction command for correcting a position command based on the predicted target position deviation. Corrector acquires the position command, corrects the position command based on the correction command, and generates a corrected position command Controller controls motor based on the corrected position command and a position of motor.
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公开(公告)号：US20240088809A1
公开(公告)日：2024-03-14
申请号：US18039643
申请日：2021-11-30
CPC分类号： H02P25/06 , B65G54/02 , H02K9/22 , H02P1/16 , H02K2213/03
摘要： In order to simplify the starting-up of a transport device in the form of a long-stator linear motor, a thermal design and/or an electrical design and/or a mechanical design of the transport device is checked using a time course of the electrical control variable of the drive coils for producing a product flow, and, before starting-up, a transport device configuration having a thermal and/or electrical and/or mechanical configuration is changed if the product flow cannot be implemented due to the thermal design and/or electrical design and/or mechanical design.
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公开(公告)号：US11876474B2
公开(公告)日：2024-01-16
申请号：US17293377
申请日：2019-12-12
发明人： Guanxing Zhao , Shaofu Wu , Dajun Wu , Zhijun Meng
CPC分类号： H02P3/02 , G06F3/016 , H02P3/18 , H02P25/032 , H02P25/06 , H02P2209/13
摘要： A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.
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公开(公告)号：US11735991B2
公开(公告)日：2023-08-22
申请号：US17284932
申请日：2019-10-08
申请人： THK CO., LTD.
发明人： Katsuya Fukushima , Masashi Ishii , Hiroki Niwa , Akira Suzuki , Kazuto Oga , Shogo Wakuta , Satoshi Hara , Tomofumi Mizuno , Shigeki Hayashi
CPC分类号： H02K41/031 , H02P25/06
摘要： In an actuator, an unnecessarily large load is prevented from being applied to a shaft and a workpiece. There are included a force sensor, an output of which is according to a force applied to a connecting member connected to the shaft, an amplifier that amplifies the output of the force sensor, and a low-pass filter, and a load applied to the shaft is detected based on an output from the amplifier until the shaft or a member associated with the shaft comes in contact with another member, and thereafter, the load applied to the shaft is detected based on an output from the low-pass filter.
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公开(公告)号：US11699970B2
公开(公告)日：2023-07-11
申请号：US17566670
申请日：2021-12-30
发明人： Yongyong Chen , Zheng Xiang , Yajun Zheng
IPC分类号： H02P25/06
CPC分类号： H02P25/06 , H02P2209/11
摘要： The present invention provides a driving voltage generation method of a linear motor, and linear motor driving voltage generation device performing same. The driving voltage voltage generation method of a linear motor includes the following. Define the displacement waveform of the linear motor’s vibrator within a preset period and the displacement waveform is an asymmetrical waveform. Calculate the voltage waveform corresponding to the linear motor in the preset period according to the displacement waveform. The present invention is designed to use the driving voltage generated by the driving voltage generation method to effectively control the linear motor to express the vibration effect in a specific direction.
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9.发明授权公开(公告)号：US11641169B2
公开(公告)日：2023-05-02
申请号：US17184395
申请日：2021-02-24
发明人： Jadav Das
IPC分类号： H02P25/06 , H02P6/00 , H02P25/064
摘要： A motor controller is provided that executes a commutation routine in one of a plurality of operating modes to regulate current provided to drive coils in a linear motion system. The motor controller generated currents for each of the drive coils in a first operating mode to minimize the copper losses in the drive coils, in a second operating mode to maximize the force applied to the mover, in a third operating mode to provide balanced currents between the drive coils, and in a fourth operating mode to provide currents according to a selected operating point that combines characteristics of the first three operating points. The motor controller may also monitor each of the drive coils for saturation and redistribute at least a portion of the current required to control operation of the mover to the other drive coils when one of the drive coils is saturated.
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公开(公告)号：US20230090794A1
公开(公告)日：2023-03-23
申请号：US17512896
申请日：2021-10-28
发明人： Tsung-Han YANG , Yen-Chih WANG , Ming-Jun HSIAO , Tsung-Nan WU
摘要： An electronic device for controlling an LRA (Linear Resonant Actuator) includes a signal generator, a driver, a delay unit, a sensor, and a DSP (Digital Signal Processor). The signal generator generates a digital signal. The driver drives the LRA according to the digital signal. The delay unit delays the digital signal for a predetermined time, so as to generate an estimated voltage signal. The sensor detects the current flowing through the LRA, so as to generate a sensing current signal. The DSP controls the resonant frequency or the gain value of the signal generator according to the estimated voltage signal and the sensing current signal.
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