公开(公告)号：US20170021356A1

公开(公告)日：2017-01-26

申请号：US15217920

申请日：2016-07-22

申请人： Cepheid

发明人： Doug DORITY ,  Tien PHAN ,  David FROMM ,  Rick CASLER ,  Dustin DICKENS ,  Stuart MORITA ,  Matthew PICCINI

IPC分类号： B01L7/00 ,  H02P6/182 ,  H02P27/06

CPC分类号： B01L7/52 ,  B01L3/50273 ,  B01L2200/025 ,  B01L2200/04 ,  B01L2200/0647 ,  B01L2200/143 ,  B01L2300/023 ,  B01L2300/027 ,  B01L2300/0663 ,  B01L2300/14 ,  B01L2300/1822 ,  B01L2300/1827 ,  B01L2300/1894 ,  B01L2400/0436 ,  B01L2400/0439 ,  B01L2400/0496 ,  G01N33/4875 ,  G01N35/00871 ,  G01N35/1016 ,  G01N35/1095 ,  G01N2035/00019 ,  G01N2035/00316 ,  G01N2035/00356 ,  G01N2201/0221 ,  G01N2201/0256 ,  G01N2800/00 ,  H02P6/182 ,  H02P27/06

摘要： Improved sub-assemblies and methods of control for use in a diagnostic assay system adapted to receive an assay cartridge are provided herein. Such sub-assemblies include: a brushless DC motor, a door opening/closing mechanism and cartridge loading mechanism, a syringe and valve drive mechanism assembly, a sonication horn, a thermal control device and optical detection/excitation device. Such systems can further include a communications unit configured to wirelessly communicate with a mobile device of a user so as to receive a user input relating to functionality of the system with respect to an assay cartridge received therein and relaying a diagnostic result relating to the assay cartridge to the mobile device.

摘要翻译： 本文提供了改进的子组件和用于在适于接收分析盒的诊断测定系统中使用的控制方法。 这样的子组件包括：无刷DC电动机，门打开/关闭机构和盒装载机构，注射器和阀驱动机构组件，超声处理喇叭，热控制装置和光学检测/激励装置。 这样的系统还可以包括被配置为与用户的移动设备进行无线通信的通信单元，以便相对于在其中接收的测定盒接收与系统的功能有关的用户输入，并且中继与分析盒相关的诊断结果 到移动设备。

公开(公告)号：US20160294310A1

公开(公告)日：2016-10-06

申请号：US15182126

申请日：2016-06-14

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Yisong Lu

IPC分类号： H02P6/182 ,  H02P27/08

CPC分类号： H02P6/182 ,  H02P27/08

摘要： A back electromotive force (BEMF) zero cross may be detected in a brushless direct current (BLDC) motor that is controlled by pulse width modulation (PWM). A phase input of the BLDC motor is tri-stated during PWM periods in which the phase input conducts motor drive current, and the tri-stating of the phase input is used to determine whether a BEMF zero cross has occurred in the BLDC motor.

摘要翻译： 在通过脉冲宽度调制（PWM）控制的无刷直流（BLDC）电机中可以检测到反电动势（BEMF）零交叉。 在PWM周期内，BLDC电动机的相位输入为三相，其中相位输入传导电动机驱动电流，并且使用相位输入的三态来确定BLDC电动机中是否发生了BEMF零交叉。

公开(公告)号：US06888331B2

公开(公告)日：2005-05-03

申请号：US10277537

申请日：2002-10-22

申请人： Francisco Morales Serrano

发明人： Francisco Morales Serrano

IPC分类号： H02P6/182 ,  H03M3/02 ,  H01R39/46

CPC分类号： H02P6/182

摘要： The invention relates to a sensorless commutation of a direct-current motor. To allow an exact, easy to design, flexible, and highly integratable circuit arrangement for commuting motor devices, analogue phase detectors are replaced by digital devices, in particular Sigma-Delta-modulators, which oversample the induced voltages of coils of said motor.

摘要翻译： 本发明涉及直流电动机的无传感器换向。 为了允许用于通勤电机设备的精确，易于设计，灵活和高度可集成的电路布置，模拟相位检测器被数字设备，特别是Sigma-Delta调制器替代，其过采样所述电机的线圈的感应电压。

公开(公告)号：US06859000B2

公开(公告)日：2005-02-22

申请号：US09915426

申请日：2001-07-26

申请人： Martin Kessler ,  Ulrich Frank

发明人： Martin Kessler ,  Ulrich Frank

IPC分类号： G01P3/48 ,  H02P6/12 ,  H02P6/182 ,  H02P1/18

CPC分类号： G01P3/48 ,  H02P6/12 ,  H02P6/182 ,  Y10S388/923

摘要： A device for position determination in a sensorless direct current motor has a plurality of inductivities arranged in corresponding phases and inducing alternating voltages in a motor windings, a plurality of resistances located in phase branches to be evaluated for a position determination of a rotor position of the sensorless direct current motor, and a plurality of comparator components each associated with the corresponding phase branch to be evaluated.

摘要翻译： 在无传感器直流电动机中用于位置确定的装置具有以相应相位布置的多个感应系数，并且在电动机绕组中产生交流电压，位于相分支中的多个电阻被评估，用于对所述电动机绕组的转子位置进行位置确定 无传感器直流电动机以及与要评估的对应相位分支相关联的多个比较器部件。

公开(公告)号：US5859512A

公开(公告)日：1999-01-12

申请号：US787597

申请日：1997-01-22

申请人： Henricus C. J. Buthker

发明人： Henricus C. J. Buthker

IPC分类号： H02P6/12 ,  H02P6/14 ,  H02P6/182 ,  H02P6/20

CPC分类号： H02P6/20 ,  H02P6/14 ,  H02P6/182

摘要： A drive circuit for supplying drive signals to a plurality of windings of a multi-phase d.c. motor. The drive circuit comprises a multi-phase inverter which supplies the drive signals to the motor windings; a phase detector which samples the back-emf signal of a winding in order to obtain a phase-error signal; a low-pass filter which generates a control signal dependent upon the phase-error signal; and a controllable oscillator which generates a frequency signal whose phase and frequency depend on the control signal. The timing with which the multi-phase inverter supplies the drive signals to the windings is dependent on the frequency signal. The drive circuit further comprises a masking circuit for temporarily inhibiting the further processing of the phase-error signal by the low-pass filter, at least during the presence of a flyback signal in the phase-error signal, as a result of which the processing of the flyback pulses present in the phase-error signal is inhibited.

摘要翻译： 驱动电路，用于向多相直流的多个绕组提供驱动信号。 发动机。 驱动电路包括将驱动信号提供给电机绕组的多相逆变器; 相位检测器，对绕组的反电动势信号进行采样以获得相位误差信号; 低通滤波器，其产生取决于相位误差信号的控制信号; 以及产生其相位和频率取决于控制信号的频率信号的可控振荡器。 多相逆变器将驱动信号提供给绕组的时序取决于频率信号。 驱动电路还包括屏蔽电路，用于暂时禁止由低通滤波器进一步处理相位误差信号，至少在相位误差信号中存在反激信号期间，处理 存在于相位误差信号中的反激脉冲被抑制。

公开(公告)号：US12044766B2

公开(公告)日：2024-07-23

申请号：US17840542

申请日：2022-06-14

申请人： Delta Electronics, Inc.

发明人： Kuo-Heng Chao ,  Chia-Hsiang Chuang ,  Ming-Jen Chao

IPC分类号： G01R31/28 ,  G01R19/00 ,  G01R35/00 ,  H02H1/00 ,  H02H3/04 ,  H02H3/10 ,  H02H7/08 ,  H02K11/33 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  H03K17/081 ,  H03K17/687 ,  H02P6/182

CPC分类号： G01R35/00 ,  G01R19/0038 ,  G01R31/2837 ,  G01R31/2839 ,  H02H1/0007 ,  H02H3/044 ,  H02H3/10 ,  H02H7/08 ,  H02K11/33 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  H03K17/08104 ,  H03K17/687 ,  H02P6/182

摘要： The present disclosure a program burning device configured to read or write to a program burning interface. The program burning device includes a microprocessor, a programming drive circuit and an overcurrent protection circuit. The microprocessor outputs a first test signal or a second test signal. The programming drive circuit outputs a high driving voltage or a low driving voltage to the program burning interface. After the programming drive circuit outputs the low driving voltage for a preset time, the programming drive circuit outputs the high driving voltage to make the program burning interface form a high impedance. Afterwards, the overcurrent protection circuit receives the first test signal to trigger the overcurrent protection, and then receives the second test signal to trigger the undercurrent protection. If triggering the overcurrent protection and the undercurrent protection are continuously failed over a preset number of times, the microprocessor determines that current protection is failed.

公开(公告)号：US12019388B2

公开(公告)日：2024-06-25

申请号：US17847638

申请日：2022-06-23

申请人： CANON KABUSHIKI KAISHA

发明人： Masatoshi Itoh

IPC分类号： H02P21/20 ,  G03G15/00 ,  H02P6/182 ,  H02P21/18

CPC分类号： G03G15/5008 ,  G03G15/80 ,  H02P6/182 ,  H02P21/18 ,  H02P21/20

摘要： A motor control apparatus includes: a current supply unit configured to supply a coil current to a plurality of coils of a motor by controlling a voltage to be applied to the plurality of coils, based on a first command value of an excitation current and a second command value of a torque current; and a control unit configured to control the first command value based on a rotation speed of a rotor of the motor, wherein the control unit is further configured to control, when the rotation speed of the rotor is lower than a first threshold value, the first command value to cause the excitation current to be larger than zero, and control the second command value to supply the torque current in accordance with a load of the rotor.

公开(公告)号：US12015363B2

公开(公告)日：2024-06-18

申请号：US17948468

申请日：2022-09-20

申请人： Rohm Co., Ltd.

发明人： Yoshito Otaguro

IPC分类号： H02P23/00 ,  H02P6/08 ,  H02P6/15 ,  H02P6/182 ,  H02P25/00 ,  H02P27/00 ,  H02P27/08

CPC分类号： H02P27/08 ,  H02P6/08 ,  H02P6/15 ,  H02P6/182

摘要： A motor drive circuit includes: a PWM signal generation part configured to generate a PWM signal based on a count value of a counter; a detection part configured to detect a zero crossing of a counter electromotive voltage generated in a coil of a motor; a prediction part configured to predict an arrival timing of the zero crossing of the counter electromotive voltage; a stop part configured to stop a counting operation of the counter after a first time point going back from the arrival timing predicted by the prediction part; and a reset part configured to reset the count value at a timing at which the detection part detects the zero crossing of the counter electromotive voltage.

公开(公告)号：US20240186874A1

公开(公告)日：2024-06-06

申请号：US18440479

申请日：2024-02-13

申请人： Jacobi Motors, LLC

发明人： Nicolaus Radford ,  Mohammadreza Barzegaranbaboli ,  Ahmed Morsy

IPC分类号： H02K21/12 ,  H02K29/12 ,  H02P6/182

CPC分类号： H02K21/12 ,  H02K29/12 ,  H02P6/182

摘要： A method of changing a magnetic flux density in an air gap between a stator and a rotor in a real-time flux-mnemonic permanent magnet synchronous machine comprising permanent magnets, the method comprising applying at least one current pulse to adjust a magnetic operating point of the magnets, wherein the at least one current pulse has a duration of less than 3 ms. For applying the at least one current pulses, the method comprises consecutively applying a plurality of primitive pulses.

公开(公告)号：US20240128901A1

公开(公告)日：2024-04-18

申请号：US17965519

申请日：2022-10-13

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Miroslav Oljaca ,  David Stout ,  Dennis P. Lehman ,  Jan Morten Braathen ,  Merril Newman

IPC分类号： H02P6/10 ,  H02P6/182

CPC分类号： H02P6/10 ,  H02P6/182 ,  H02P21/18

摘要： Methods, circuits and computer program products are presented herein. The method includes isolating a ripple waveform from a current signal originating from a brushed direct current motor (BDCM). The method includes determining the wave count of the ripple waveform. The method includes determining a position of a movable structure operably coupled to a shaft of the BDCM according to the wave count of the ripple waveform. The present technology may be practiced without discrete capacitor components in high pass filtering aspects of the disclosed circuit. The methods, circuits and computer program products can be implemented to accurately determine a rotational position of a shaft of a BDCM and also position(s) of mechanism(s) coupled to the shaft without requiring any external sensors or other components for this purpose other than the disclosed circuits.