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1. 发明授权

US11086273B2 Drive circuit for two-coil step motor 有权
公开(公告)号：US11086273B2
公开(公告)日：2021-08-10
申请号：US16579831
申请日：2019-09-24
申请人： CITIZEN WATCH CO., LTD.
发明人： Yu Takyoh , Toshiaki Fukushima , Toshinari Maeda , Daisuke Iri , Daisuke Matsuoh
IPC分类号： G04C3/14 , H02P8/02 , H02P8/16
摘要： Provided is a drive circuit for a two-coil stepper motor, including: a rotor; a stator including first, second, and third stator magnetic-pole portions; a coil A to be magnetically coupled to the first stator magnetic-pole portion and the third stator magnetic-pole portion; a coil B to be magnetically coupled to the second stator magnetic-pole portion and the third stator magnetic-pole portion; a drive pulse generation circuit configured to output a drive pulse; a detection pulse generation circuit configured to output a detection pulse for detecting counter-electromotive currents generated in the coil A and the coil B; and a rotation detection circuit configured to receive a detection signal generated due to the detection pulse as input to determine whether or not the rotor has rotated.

2. 发明申请

US20210216045A1 Watch Motor Control Circuit, Electronic Watch, And Watch Motor Control Method 有权
公开(公告)号：US20210216045A1
公开(公告)日：2021-07-15
申请号：US17144213
申请日：2021-01-08
申请人： Seiko Epson Corporation
发明人： Takashi KAWAGUCHI
IPC分类号： G04C3/14 , H02P8/02 , H02P8/16
摘要： An electronic watch includes a driver controlled to be in an ON state in which a drive current is supplied to a coil of a watch motor, and an OFF state in which the drive current is not supplied, a current detector that detects a current value flowing through the coil, a driver controller that controls the driver, a polarity switching controller that alternately switches a polarity of the drive current to a first polarity and a second polarity, a sampling controller that, at a sampling cycle, intermittently causes the current detector and the driver controller to operate, and a sampling cycle setting controller that detects a sampling cycle setting condition and changes the sampling cycle in at least two stages of a first cycle and a second cycle longer than the first cycle.

3. 发明授权

US10910970B2 Motor with internal encoder unit 有权
公开(公告)号：US10910970B2
公开(公告)日：2021-02-02
申请号：US16449086
申请日：2019-06-21
申请人： ARCUS TECHNOLOGY, INC.
发明人： Christopher C. Chang
IPC分类号： H02P8/16 , H02K7/08 , H02K37/04 , H02K11/22
摘要： A motor and a method of operating the motor uses an encoder disk attached to the rotor of the motor and an encoder reader positioned to optically obtain rotational information of the rotor. The encoder disk and the encoder reader are located within an interior region of the stator of the motor in which the rotor is positioned to rotate.

4. 发明授权

US10594238B2 Driving circuit for stepping motor 有权
公开(公告)号：US10594238B2
公开(公告)日：2020-03-17
申请号：US15997061
申请日：2018-06-04
申请人： ROHM CO., LTD.
发明人： Hiroki Sugamoto
IPC分类号： H02P8/12 , H02P8/34 , H02P8/16
摘要： A direction setting pin DIR receives a direction signal ROT that indicates the rotational direction of the stepping motor. A clock pin CLK receives a clock signal CLK that indicates the rotational direction of the stepping motor. A logic circuit generates a first internal signal and a second internal signal that respectively indicate the states of the first H-bridge circuit and the second H-bridge circuit according to the direction signal ROT and the clock signal CLK. When the clock signal CLK remains in a predetermined state for a predetermined judgment time, the logic circuit transits to a predetermined mode.

5. 发明申请

US20190393814A1 MOTOR WITH INTERNAL ENCODER UNIT 审中-公开
公开(公告)号：US20190393814A1
公开(公告)日：2019-12-26
申请号：US16449086
申请日：2019-06-21
申请人： ARCUS TECHNOLOGY, INC.
发明人： Christopher C. Chang
IPC分类号： H02P8/16 , H02K7/08 , H02K11/22 , H02K37/04
摘要： A motor and a method of operating the motor uses an encoder disk attached to the rotor of the motor and an encoder reader positioned to optically obtain rotational information of the rotor. The encoder disk and the encoder reader are located within an interior region of the stator of the motor in which the rotor is positioned to rotate.

6. 发明授权

US10305403B2 Dynamic motor drive for battery operated devices 有权
公开(公告)号：US10305403B2
公开(公告)日：2019-05-28
申请号：US15198054
申请日：2016-06-30
申请人： Rosemount Inc.
发明人： Eric Russell Lovegren , Richard Louis Nelson
IPC分类号： G01L19/16 , H02P8/16 , H02K37/00
摘要： A battery powered device includes a battery and a motor controller that is coupled to the battery. A motor is operably coupled to the motor controller. The motor controller is configured to detect an amount of available power from the battery and engage the motor based on the amount of available power.

7. 发明申请

US20180011471A1 MOTOR CONTROLLER, MOTOR DRIVER, AND MOTOR DRIVING SYSTEM 审中-公开
公开(公告)号：US20180011471A1
公开(公告)日：2018-01-11
申请号：US15637192
申请日：2017-06-29
申请人： Haruyuki SUZUKI
发明人： Haruyuki SUZUKI
IPC分类号： G05B19/40 , H02P8/16 , G05B19/25 , H02P8/18 , H02P8/22
CPC分类号： G05B19/40 , G05B19/253 , H02P8/14 , H02P8/16 , H02P8/18 , H02P8/22 , H02P21/0021 , H02P21/0089
摘要： A novel motor controller controls a stepping motor and includes a command value calculator to calculate and output a speed command value and an angle command value based on a reference clock. A control method selector is included to select one of the open-loop control and the closed-loop control in accordance with the speed command value. A command value output unit is included to output a first target value as the first current command value when the open-loop control is selected and outputs a second target value as the second current command value when the closed-loop control is selected. The motor controller controls the stepping motor based on the first target value when the open-loop control is selected and the second target value when the closed-loop control is selected.

8. 发明授权

US09400388B2 Head-up display device 有权
标题翻译：平视显示设备
公开(公告)号：US09400388B2
公开(公告)日：2016-07-26
申请号：US14511990
申请日：2014-10-10
申请人： YAZAKI CORPORATION
发明人： Yoshihisa Yamada
IPC分类号： G02B27/14 , G02B27/01 , B60K35/00 , H02P8/16 , H02P8/12
CPC分类号： G02B27/0149 , B60K35/00 , B60K2350/405 , G02B27/01 , G02B2027/0159 , H02P8/12 , H02P8/16
摘要： A head-up display device which can reduce heat generation and perform efficient control by controlling a drive current of a motor is provided. After a combiner is held in a display position, a microcomputer controls duty of drive pulse supplied to the motor so that the motor is operated by low torque drive of torque 50% when adjusting an angle of the combiner according to the operation of a forward/backward tilting switch. Furthermore, the microcomputer controls duty of drive pulse supplied to the motor so that the motor is operated by normal torque drive of torque 100% when moving the combiner from a storage position to a display position and from the display position to the storage position according to up-and-down operation.
摘要翻译：提供一种平视显示装置，其能够通过控制电动机的驱动电流来减少发热并进行有效的控制。在组合器被保持在显示位置之后，微型计算机控制提供给电动机的驱动脉冲的占空比，使得当根据前进/后退的操作调节组合器的角度时，通过转矩50％的低扭矩驱动来操作电动机，向后倾斜开关此外，微型计算机控制提供给电动机的驱动脉冲的占空比，使得当根据存储位置将组合器从存储位置移动到显示位置和从显示位置到存储位置时，通过转矩100％的正常扭矩驱动来操作电动机上下操作。

9. 发明授权

US06946814B2 Stepping motor driver 有权
公开(公告)号：US06946814B2
公开(公告)日：2005-09-20
申请号：US10942965
申请日：2004-09-17
申请人： Akio Takemori , Yoshifumi Kuwano , Yukinari Takahashi , Hiroaki Taka
发明人： Akio Takemori , Yoshifumi Kuwano , Yukinari Takahashi , Hiroaki Taka
IPC分类号： H02P8/16 , G05B19/40
CPC分类号： H02P8/16
摘要： A stepping motor driver comprises: an excitation angle generating means which generates an excitation angle from an external command pulse; a current control means which controls exciting currents for a stepping motor according to the excitation angle and a current command; a current detection means which detects phase currents of the stepping motor; an angle detection means which detects a rotor rotation angle of the stepping motor; a torque component current calculating means which calculates a torque component current from the phase currents and the rotor rotation angle; an absolute converting means which obtains the absolute value of the torque component current; and a current command output means which outputs the current command depending on the absolute value of the torque component current.

10. 发明授权

US5105140A Peristaltic pump motor drive 失效
标题翻译：超声波泵电机驱动
公开(公告)号：US5105140A
公开(公告)日：1992-04-14
申请号：US463644
申请日：1990-01-11
申请人： Joseph B. Matthews , George A. Bowman
发明人： Joseph B. Matthews , George A. Bowman
IPC分类号： A61M1/00 , A61M5/142 , F04B49/06 , H02P8/14 , H02P8/16
CPC分类号： A61M5/14228 , H02P8/16 , A61M2205/8212
摘要： The present invention provides a drive signal for a peristaltic pump motor. A first circuit is provided which generates a first series of pulses at a given frequency. A second circuit is provided which generates a second series of pulses having a frequency higher than the frequency of the first series of pulses. A third circuit is provided which generates a third series of pulses having a frequency between the frequency of the first and second series of pulses. Finally, a circuit is provided which combines the three series of pulses into a drive signal. The drive signal length is determined by the frequency of the first series of pulses. The drive signal further is divided into two sections, an initial pulse stage determined by the frequency of the third series of pulses, and a modulated pulse stage being a series of pulses determined by the frequency of the second series of pulses.
摘要翻译：本发明提供一种用于蠕动泵电动机的驱动信号。提供了以给定频率产生第一系列脉冲的第一电路。提供了第二电路，其产生频率高于第一系列脉冲的频率的第二脉冲序列。提供第三电路，其产生具有在第一和第二脉冲序列的频率之间的频率的第三系列脉冲。最后，提供将三个脉冲串组合成驱动信号的电路。驱动信号长度由第一系列脉冲的频率决定。驱动信号进一步被分为两部分，初始脉冲级由第三系列脉冲的频率确定，调制脉冲级是由第二系列脉冲的频率确定的一系列脉冲。

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