公开(公告)号：US20160276965A1

公开(公告)日：2016-09-22

申请号：US15070565

申请日：2016-03-15

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki KAIDU ,  Toshihiro TAMITSUJI

IPC: H02P6/15 ,  H02P6/182

CPC classification number: H02P6/182 ,  H02P6/157

Abstract: A motor drive controller includes: an advance-angle reference voltage generator that generates an advance-angle reference voltage; a back electromotive voltage comparator that generates phase signals of phases at a cross timing of the advance-angle reference voltage and back electromotive voltages of phases of a motor; and a controller that operates to perform a process including: detecting a rotation speed of the motor based on the phase signals of the phases; increasing the advance-angle reference voltage when the rotation speed moves from a high speed to a low speed; and decreasing the advance-angle reference voltage when the rotation speed moves from a low speed to a high speed.

Abstract translation: 电动机驱动控制器包括：提前角参考电压发生器，其产生提前角参考电压; 反电动势电压比较器，其在提前角参考电压和电动机的相位的反电动势的交叉定时产生相位相位信号; 以及控制器，其操作以执行处理，包括：基于所述相的相位信号来检测所述电动机的转速; 当转速从高速移动到低速时，增加提前角参考电压; 以及当所述转速从低速移动到高速时减小所述提前角参考电压。

公开(公告)号：US20160265471A1

公开(公告)日：2016-09-15

申请号：US15029573

申请日：2014-10-14

Applicant: CONTINENTAL AUTOMOTIVE GMBH

Inventor： Rolf GRAF ,  Bernhard LUKAS

IPC: F02D41/30 ,  F04C2/10 ,  F02M59/12 ,  H02P6/10

CPC classification number: F02D41/3082 ,  F02D41/1498 ,  F02M59/12 ,  F04C2/10 ,  H02P6/06 ,  H02P6/10 ,  H02P6/182 ,  H02P2207/05

Abstract: A method for controlling an electric motor of a vehicle pump used to deliver a medium. According to the method, a period required for at least one partial revolution of a rotor of the electric motor is determined. The fluctuations during the period can represent a measurement of the true running of the electric motor. The speed of the electric motor can be altered depending on the deviation of the period from a comparative value. As a result, the true running of the electric motor can be guaranteed once again.

Abstract translation: 一种用于控制用于传送介质的车辆用电动机的电动机的方法。 根据该方法，确定电动机的转子的至少一次部分旋转所需的时间。 该期间的波动可以表示电动机的真实运行的测量。 可以根据周期与比较值的偏差来改变电动机的速度。 因此，可以再次确保电动机的真实运行。

公开(公告)号：US09431933B2

公开(公告)日：2016-08-30

申请号：US14601683

申请日：2015-01-21

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Tomohiro Takami ,  Yoshiki Nagata

IPC: H02P6/06 ,  H02P6/00 ,  H02P6/16 ,  H02P6/18 ,  H02P6/08

CPC classification number: H02P6/28 ,  H02P6/06 ,  H02P6/08 ,  H02P6/16 ,  H02P6/182 ,  H02P29/032

Abstract: Provided is an inverter apparatus capable of preventing occurrence of overcurrent in an AC motor and stably controlling driving of the AC motor. The inverter apparatus controlling the AC motor included in an electric compressor includes a shunt resistor for detecting current flowing in the AC motor, and a limit value control unit controlling a current limit value for a detected current detected at the shunt resistor. The limit value control unit determines whether the number of times the detected current becomes equal to or more than the first threshold within a first predetermined time is equal to or more than a first number of times. The limit value control unit decreases the current limit value when the number of times the detected current becomes equal to or more than the first threshold within the first predetermined time is equal to or more than the first number of times.

Abstract translation: 提供一种逆变器装置，能够防止交流电动机中发生过电流，稳定地控制交流电动机的驱动。 控制包括在电动压缩机中的AC电动机的逆变器装置包括用于检测在AC电动机中流动的电流的分流电阻器和控制在分流电阻器处检测到的检测电流的电流限制值的限制值控制单元。 限制值控制单元确定在第一预定时间内检测到的电流等于或大于第一阈值的次数等于或大于第一次。 当在第一预定时间内检测电流变得等于或大于第一阈值的次数等于或大于第一次数时，限制值控制单元减小电流限制值。

公开(公告)号：US20160173014A1

公开(公告)日：2016-06-16

申请号：US14855726

申请日：2015-09-16

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Giuseppe D'ANGELO ,  Virginia CLEMENTE ,  Michele BISOGNO

IPC: H02P6/14 ,  H02P27/08

CPC classification number: H02P6/14 ,  H02P6/182 ,  H02P27/08

Abstract: A driver device for driving a DC motor using PWM modulated drive signals includes comparator circuits for producing digitalized Back-EMF signals having first and second values as a function of the Back-EMF signals being above or below a respective threshold, and an inverter for driving the PWM modulated drive signals in a phased relationship with the digitalized Back-EMF signals. The driver device also includes controller circuits configured for controlling the respective threshold by minimizing the error between a time measured between two consecutive opposed edges of the digitalized Back-EMF signal and half a time measured between two consecutive homologous edges of the digitalized Back-EMF signal.

Abstract translation: 用于使用PWM调制的驱动信号驱动DC电动机的驱动器装置包括用于产生数字化反电动势信号的比较器电路，其具有作为高于或低于相应阈值的反电动势信号的函数的第一和第二值，以及驱动用逆变器 PWM调制驱动信号与数字化的反电动势信号处于相位关系。 所述驱动器装置还包括控制器电路，所述控制器电路经配置以通过将数字化反电动势信号的两个连续对置边缘之间测量的时间与所述数字化反电动势信号的两个连续同源边缘之间测量的一半时间之间的误差最小化来控制相应的阈值 。

公开(公告)号：US09356545B2

公开(公告)日：2016-05-31

申请号：US13952479

申请日：2013-07-26

Applicant: Semiconductor Components Industries, LLC

Inventor： Kosaku Hioki ,  Kazumasa Takai ,  Takeshi Naganuma ,  Yoshihiro Niwa

IPC: G05B19/40 ,  H02P6/18 ,  H02P8/12 ,  H02P8/16 ,  H02P8/04

CPC classification number: H02P6/182 ,  G05B19/40 ,  H02P6/18 ,  H02P6/188 ,  H02P8/04 ,  H02P8/12 ,  H02P8/16

Abstract: An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the two coils. During a phase where one of the coils is in a high-impedance state, an induced voltage generated in the coil is detected. According to the state of the induced voltage, an output control circuit controls the amounts of the motor drive currents supplied to the two coils.

Abstract translation: 电动机驱动电流的量被控制到适当的值。 提供两个线圈，并且通过将供给的电流设定为两个线圈的不同相位，使线圈旋转转子。 在其中一个线圈处于高阻抗状态的相位中，检测线圈中产生的感应电压。 根据感应电压的状态，输出控制电路控制提供给两个线圈的电动机驱动电流的量。

公开(公告)号：US20160141994A1

公开(公告)日：2016-05-19

申请号：US15005009

申请日：2016-01-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Yoshiyasu TAKASE

IPC: H02P21/14 ,  H02P25/064 ,  H02P21/22 ,  H02P6/14 ,  H02P21/18

CPC classification number: H02P21/14 ,  H02P6/14 ,  H02P6/182 ,  H02P21/18 ,  H02P21/22 ,  H02P21/28 ,  H02P25/064

Abstract: A motor drive system includes a motor, a motor control device, and a sensor that detects torque or acceleration of the motor. The motor control device includes an estimating unit configured to estimate at least one of speed and position of the motor, and a current control unit configured to control current to be supplied to the motor based upon an estimation result by the estimating unit. The estimating unit includes first and second estimating units, and derives an estimated value based upon estimation results by the first and second estimating units. The first estimating unit estimates based upon a detection signal detected by the sensor and a high-frequency component superimposed on an output current to the motor. The second estimating unit estimates from an estimation result of induced voltage of the motor.

Abstract translation: 马达驱动系统包括马达，马达控制装置和检测马达的转矩或加速度的传感器。 电动机控制装置包括：估计单元，被配置为估计电动机的速度和位置中的至少一个;以及电流控制单元，被配置为基于估计单元的估计结果来控制要提供给电动机的电流。 估计单元包括第一和第二估计单元，并且基于第一和第二估计单元的估计结果导出估计值。 第一估计单元基于由传感器检测到的检测信号和叠加到电动机的输出电流的高频分量来估计。 第二估计单元根据电动机的感应电压的估计结果来估计。

公开(公告)号：US09343102B1

公开(公告)日：2016-05-17

申请号：US14668940

申请日：2015-03-25

Applicant: Western Digital Technologies, Inc.

Inventor： Michael Troy Nicholls ,  Joseph J. Crowfoot

IPC: G11B19/20 ,  H02P6/18

CPC classification number: G11B19/2081 ,  G11B19/2009 ,  H02P3/14 ,  H02P6/182

Abstract: A data storage device is disclosed comprising a disk, a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings, and a head actuated over the disk. The windings are commutated based on a commutation sequence while applying a periodic driving voltage to each winding, wherein the periodic driving voltage comprises an operating amplitude during normal operation. When a supply voltage falls below a threshold, the spindle motor is configured into a power generator by at least adjusting a phase of the periodic driving voltage by a phase offset and adjusting the amplitude of the periodic driving voltage based on the phase offset.

Abstract translation: 公开了一种数据存储装置，包括盘，被配置为旋转盘的主轴马达，其中主轴马达包括多个绕组，以及在盘上致动的头。 在对每个绕组施加周期性驱动电压的同时，基于换向序列对绕组进行整流，其中周期性驱动电压在正常操作期间包括工作幅度。 当电源电压低于阈值时，主轴电动机通过相位偏移至少调整周期性驱动电压的相位并基于相位偏移来调节周期性驱动电压的幅度来配置成发电机。

公开(公告)号：US09337769B2

公开(公告)日：2016-05-10

申请号：US14472865

申请日：2014-08-29

Applicant: Atieva, Inc.

Inventor： Jean-Philippe Gauthier

IPC: H02P29/02

CPC classification number: H02P29/02 ,  H02P6/182 ,  H02P29/0241

Abstract: A method of diagnosing DC fan motor performance is provided in which normal operation of the motor is periodically and temporarily suspended in order to verify that the motor is operating within an acceptable performance range. When normal fan motor operation is suspended, the back EMF of the motor is used to determine (i) whether the motor is seized and/or (ii) whether the rate of deceleration after interrupting power to the motor is indicative of a failing motor.

Abstract translation: 提供一种诊断直流风扇电动机性能的方法，其中电动机的正常操作被周期性地暂时停止，以便验证电动机是否在可接受的性能范围内运行。 当正常的风扇电机运行暂停时，电机的反电动势用于确定（i）电动机是否被检出和/或（ii）中断电动机后的减速率是否表示电动机故障。

公开(公告)号：US09337758B2

公开(公告)日：2016-05-10

申请号：US14531606

申请日：2014-11-03

Applicant: Brose Fahrzeugteile GmbH & Co. KG, Wuerzburg

Inventor： Johannes Schwarzkopf

IPC: H02P6/06 ,  H02P6/18

CPC classification number: H02P6/185 ,  H02P6/182 ,  H02P6/186 ,  H02P6/187

Abstract: A method for determining the position of an at least two-phase, in particular three-phase bmshless electric drive comprising at least two phase windings, each of which has a first and a second terminal, a second terminal of a first phase winding being electrically connected to the first terminal of a second phase winding at a common connecting terminal. In order to be able to reliably determine the position of the electric drive even at low speeds, a voltage pulse is applied between the first terminal of the first phase winding and the second terminal of the second phase winding, the resulting voltage at the connecting terminal or at a third phase winding connected thereto is detected and the voltage ratio between the first phase winding and the second phase winding is determined therefrom, and the ratio between the variable inductances is determined from said voltage ratio.

Abstract translation: 一种用于确定至少两相，特别是三相无电脉冲电驱动器的位置的方法，包括至少两个相绕组，每个相绕组具有第一和第二端子，第一相绕组的第二端子是电 连接到公共连接端子处的第二相绕组的第一端子。 为了能够即使在低速时可靠地确定电力驱动器的位置，也可以在第一相绕组的第一端子和第二相绕组的第二端子之间施加电压脉冲，在连接端子处产生的电压 或者在连接到其的第三相绕组中确定第一相绕组和第二相绕组之间的电压比，并根据所述电压比确定可变电感之比。

公开(公告)号：US09306556B2

公开(公告)日：2016-04-05

申请号：US14125979

申请日：2012-06-08

Applicant: Masanori Tsuchihashi

Inventor： Masanori Tsuchihashi

IPC: H02P1/24 ,  H03K17/687 ,  H02P6/08 ,  H03K17/693 ,  H02P23/00 ,  H02P6/18

CPC classification number: H03K17/687 ,  H02P6/085 ,  H02P6/182 ,  H02P23/009 ,  H03K17/693 ,  H03K2217/0054

Abstract: An analog-switch circuit (1) having: a resistor (R1); a resistor (R2); a CMOS analog switch (S1) in which a first end is connected to an input end (Vin) via the resistor (R1), and a second end is connected to an output end (Vout); and a CMOS analog switch (S2), in which a first end is connected to the first end of the analog switch (S1), and a second end is connected to a ground end via the resistor (R2). The CMOS analog switch (S2) is turned on or off in antiphase to the analog switch (S1).

Abstract translation: 一种具有：电阻器（R1）的模拟开关电路（1）; 电阻器（R2）; CMOS模拟开关（S1），其中第一端经由电阻器（R1）连接到输入端（Vin），第二端连接到输出端（Vout）; 和CMOS模拟开关（S2），其中第一端连接到模拟开关（S1）的第一端，并且第二端经由电阻器（R2）连接到接地端。 CMOS模拟开关（S2）与模拟开关（S1）反相导通或关闭。