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公开(公告)号：US20230231500A1
公开(公告)日：2023-07-20
申请号：US18152731
申请日：2023-01-10
发明人： Shigeru TAKEGISHI
摘要： A control circuit includes a storage unit, a generation unit, an update unit, and a rotation control unit. The storage unit stores a predetermined number of register values to designate a step frequency of a stepper motor. The generation unit generates a micro step clock signal every time a period corresponding to each of the predetermined number of register values stored in the storage unit elapses. The update unit updates the predetermined number of register values stored in the storage unit every time the generation unit generates the predetermined number of micro step clock signals. The rotation control unit supplies a phase current based on the micro step clock signal generated by the generation unit to the stepper motor to rotate a rotor of the stepper motor by a micro step angle found by equally dividing a step angle of the stepper motor into the predetermined number.
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公开(公告)号：US11695359B2
公开(公告)日：2023-07-04
申请号：US17050346
申请日：2019-04-24
发明人： Federico Testolin , Davide Dalfra
IPC分类号： H02P5/74 , H02P6/06 , H02P8/14 , H02P21/18 , H02P21/22 , H02P27/12 , A01D34/00 , A01D34/64 , A01D34/74 , A01D34/78
摘要： The disclosure relates to an autonomous apparatus, moving and performing preset work in a defined working area, the autonomous apparatus including an energy module supplying energy to the autonomous apparatus, a motor, a sensor circuit, and a control circuit, the motor obtaining the energy from the energy module, to drive the autonomous apparatus to move and/or work in the working area, the sensor circuit detecting working parameters and environmental parameters of the autonomous apparatus, and transmitting detection results to the control circuit, the control circuit controlling the operation of the motor according to a signal transmitted by the sensor circuit, where the motor is a sensorless brushless motor, and before the motor rotates, the control circuit measures a resistance value of the motor, and estimates, one the basis of the resistance value of the motor, a rotor position of the motor, so as to control the operation of the motor.
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3.发明授权公开(公告)号：US10734928B1
公开(公告)日：2020-08-04
申请号：US16370947
申请日：2019-03-30
申请人： Omron Corporation
发明人： Siddharth Sood , Donald Broadbent , Jesse Kolstad , David Naddor
摘要： A signal conditioning apparatus includes a timing extractor to received one or more stepper motor drive signal and convert each into a corresponding virtual quadrature trigger signal. A resolution scaler is coupled to an output of the timing extractor to scale the virtual quadrature trigger signals to adjust the transition frequency, thereby adjusting the resolution of an image captured by a camera receiving the trigger signals to be different than the print resolution created by the motor drive signals. A quadrature decoder is coupled to the output of the resolution scaler, wherein the quadrature decoder extracts timing and direction information from the virtual quadrature trigger signals received from the resolution scaler.
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公开(公告)号：US20190386596A1
公开(公告)日：2019-12-19
申请号：US16431859
申请日：2019-06-05
发明人： Yohei Ohashi
摘要： When field strengthening is constantly performed during driving by a drive motor to inhibit a rotating speed of the drive motor from suddenly fluctuating, power consumption is increased. The field strengthening is performed only during a period during which the field strengthening is required to be performed. Thus, it is possible to reduce a period during which a current value is set to a d-axis current command value (the field strengthening is performed) while the motor is driven. This can prevent increased power consumption.
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公开(公告)号：US20190339664A1
公开(公告)日：2019-11-07
申请号：US16223661
申请日：2018-12-18
申请人： LSIS CO., LTD.
发明人： Seok-Yeon KIM
摘要： The present disclosure provides a method for controlling driving of a motor by a Programmable Logic Controller (PLC). In one embodiment, the method includes: upon an initiation of an N-th position determination control period, stopping a scan program being executed; receiving one or more motor driving commands for one or more axes during a preset position control processing region; calculating one or more axis-based motor movement amounts corresponding to the one or more motor driving commands for the one or more axes during a preset position control calculation region; resuming execution of the scan program; and upon an initiation of a (N+1)-th position determination control period, driving the motor based on the one or more axis-based motor movement amounts calculated during the position control calculation region.
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公开(公告)号：US10277152B2
公开(公告)日：2019-04-30
申请号：US15471902
申请日：2017-03-28
发明人： Yuta Nito
摘要： A motor control apparatus operates in a first control mode in which the values of a torque current component and an excitation current component are controlled so that the difference between an instruction phase and a rotation phase is decreased and a second control mode in which constant current is supplied to a winding of a motor. The second control mode is switched to the first control mode if the rotation speed is varied from a value lower than a first threshold value to a value not lower than the first threshold value in the second control mode and the first control mode is kept even if the rotation speed is varied from a value not lower than the first threshold value to a value that is not lower than a second threshold value and that is lower than the first threshold value in the first control mode.
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公开(公告)号：US20190013752A1
公开(公告)日：2019-01-10
申请号：US16129656
申请日：2018-09-12
发明人： Yuta Nito
IPC分类号： H02P8/14 , H02P21/00 , H02P21/26 , B65H7/02 , H02P21/24 , B41J11/00 , G03G15/00 , B65H5/06 , B65H9/00
CPC分类号： H02P8/14 , B41J11/007 , B65H5/062 , B65H7/02 , B65H9/006 , B65H2301/44318 , B65H2511/212 , B65H2515/32 , B65H2515/704 , B65H2801/03 , B65H2801/06 , G03G15/6529 , G03G15/6567 , H02P21/0089 , H02P21/24 , H02P21/26 , Y02P70/20 , Y02P70/30 , B65H2220/01 , B65H2220/02
摘要： A sheet conveying apparatus for conveying a sheet includes a conveyance roller, a motor, a phase determiner, and a controller. The phase determiner determines a rotor rotation phase of the motor that drives the conveyance roller to convey the sheet. The controller controls so that a value of a rotor torque current component becomes a target value of the torque current component and controls so that an excitation current component value becomes a target value of the excitation current component, and controls to reduce a deviation between a command phase and the determined rotation phase. The controller controls so that a magnetic flux penetrating through a winding is weaker than a magnetic flux of the rotor, and so that a magnetic flux penetrating through the winding in a second period is stronger than the magnetic flux penetrating through the winding in the first period.
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公开(公告)号：US10141882B2
公开(公告)日：2018-11-27
申请号：US15163631
申请日：2016-05-24
发明人： Jacques L. Favreau
IPC分类号： A61M5/168 , H02P29/028 , A61M5/142 , H02P8/14 , A61M5/145 , H02P29/032 , A61M5/172 , H02P8/18
摘要： Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a modulation module coupled to the motor, and a control module coupled to the motor and the modulation module. The modulation module generates a modulated voltage that is applied to the motor, and the control module adjusts a duty cycle of the modulated voltage to achieve a commanded rotation of the rotor and detects a degradation condition based on the duty cycle.
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公开(公告)号：US20180152126A1
公开(公告)日：2018-05-31
申请号：US15807457
申请日：2017-11-08
发明人： Yuta Nito
CPC分类号： H02P8/14 , B41J11/007 , B65H5/062 , B65H7/02 , B65H9/006 , B65H2301/44318 , B65H2511/212 , B65H2515/32 , B65H2515/704 , B65H2801/03 , B65H2801/06 , G03G15/6529 , G03G15/6567 , H02P21/0089 , H02P21/24 , H02P21/26 , Y02P70/20 , Y02P70/30 , B65H2220/01 , B65H2220/02
摘要： A sheet conveying apparatus for conveying a sheet includes a conveyance roller, a motor, a phase determiner, and a controller. The phase determiner determines a rotor rotation phase of the motor that drives the conveyance roller to convey the sheet. The controller controls so that a value of a rotor torque current component becomes a target value of the torque current component and controls so that an excitation current component value becomes a target value of the excitation current component, and controls to reduce a deviation between a command phase and the determined rotation phase. The controller controls so that a magnetic flux penetrating through a winding is weaker than a magnetic flux of the rotor, and so that a magnetic flux penetrating through the winding in a second period is stronger than the magnetic flux penetrating through the winding in the first period.
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10.发明授权公开(公告)号：US09893662B1
公开(公告)日：2018-02-13
申请号：US15651015
申请日：2017-07-17
申请人： FANUC CORPORATION
发明人： Ryoutarou Tsuneki , Satoshi Ikai
CPC分类号： H02P8/14 , H02P6/06 , H02P8/34 , H02P2205/07
摘要： A servomotor control device includes a torque command creation part for creating a torque command value for driving a servomotor. The torque command creation part includes a proportional gain part and an integral gain part. An integral gain is set as a value calculated by multiplying an initial value, by a ratio J/Jm of total inertia of a machine relative to rotor inertia of the servomotor, and a value set smaller than the square of a velocity gain magnification according to delay time of the velocity control loop. A proportional gain is a value calculated by adding a value according to a difference in calculation cycle between the integral term and the proportional term, and the integral gain, to a value calculated by multiplying an initial value by the ratio J/Jm and the velocity gain magnification.
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