公开(公告)号：US11821131B2

公开(公告)日：2023-11-21

申请号：US17544271

申请日：2021-12-07

申请人： LG ELECTRONICS INC.

发明人： Kwang Sik Kim ,  Han Su Jung ,  Ha Min Song

IPC分类号： H02P27/04 ,  D06F37/30 ,  D06F34/08 ,  H02P27/06 ,  D06F34/10 ,  H02P27/02 ,  H02P23/06 ,  H02P23/26 ,  H02P25/028 ,  H02P1/26 ,  H02P6/18 ,  D06F103/04 ,  D06F103/46

CPC分类号： D06F37/304 ,  D06F34/08 ,  D06F34/10 ,  H02P1/26 ,  H02P6/18 ,  H02P23/06 ,  H02P23/26 ,  H02P25/028 ,  H02P27/02 ,  H02P27/06 ,  D06F2103/04 ,  D06F2103/46 ,  H02P2203/03 ,  H02P2209/05

摘要： Disclosed is a clothes treating apparatus and a control method thereof. Specifically, the clothes treating apparatus may include an inverter configured to convert a direct current (DC) input into an alternating current (AC) output and provide the AC output to the motor, and a controller configured to control the inverter in relation to driving of the motor.

公开(公告)号：US09947350B1

公开(公告)日：2018-04-17

申请号：US15636426

申请日：2017-06-28

申请人： STMicroelectronics S.R.L.

发明人： Michele Boscolo Berto ,  Ezio Galbiati ,  Giuseppe Maiocchi

IPC分类号： G11B5/55

CPC分类号： G11B5/5534 ,  G11B5/5547 ,  G11B5/5565 ,  H02P6/182 ,  H02P25/028 ,  H02P25/034

摘要： A driver device coupled to a winding of an electro-mechanical actuator includes: a power stage driving the winding in a discontinuous mode by alternating conduction on-phases to off-phases, and a sensor circuit sensing a voltage across the winding in an off-phase, wherein, during such an off-phase the voltage across the winding includes a residual voltage which decays to zero. The power stage drives the winding from an on-phase to an off-phase by applying to the winding a reverse current pulse to invert the direction of flow of the current through the winding and produce an oscillation of the residual voltage, whereby the residual voltage includes a zero-crossing point after the current through the winding is exhausted. The sensor circuit senses the voltage across the winding at this zero-crossing point, whereby the voltage sensed across the winding at the zero-crossing point is indicative of the back electromotive force of the winding.

公开(公告)号：US20170052341A1

公开(公告)日：2017-02-23

申请号：US14828431

申请日：2015-08-17

申请人： APPLE INC.

发明人： Calvin K. Wong ,  Shashikant G. Hegde ,  Richard L. Baer

IPC分类号： G02B7/08 ,  G01K7/36 ,  G01R19/10 ,  G01R27/02 ,  H02P25/02 ,  H02P29/00

CPC分类号： G02B7/08 ,  G01K7/16 ,  G01K7/36 ,  G01R19/10 ,  G01R27/02 ,  G02B7/028 ,  H02K41/02 ,  H02P25/028 ,  H02P25/034 ,  H02P29/60 ,  H02P29/64

摘要： In some embodiments, the method includes measuring a first responsive voltage value for a first voltage drop between a first terminal attached to a first suspension spring of an actuator housing a voice coil motor for moving a lens assembly and a second terminal of the magnetic coil of the voice coil motor. In some embodiments, the method includes calculating a first resistance of the magnetic coil based at least in part upon the first voltage value and measuring a second responsive voltage value for a second voltage drop between the first terminal attached and the second terminal. In some embodiments, the method includes calculating a second resistance of the magnetic coil based at least in part upon the second responsive voltage value and calculating a relative temperature for the magnetic coil based at least in part upon the first resistance and the second resistance.

摘要翻译： 在一些实施例中，所述方法包括测量第一电压值的第一响应电压值，所述第一电压值与附接到驱动器的第一悬架弹簧的第一端子接合，所述致动器容纳用于移动透镜组件的音圈电机和所述电磁线圈的第二端子 音圈电机。 在一些实施例中，该方法包括至少部分地基于第一电压值来计算电磁线圈的第一电阻，并测量第一端子附接和第二端子之间的第二电压降的第二响应电压值。 在一些实施例中，该方法包括至少部分地基于第二响应电压值来计算电磁线圈的第二电阻，并且至少部分地基于第一电阻和第二电阻来计算电磁线圈的相对温度。

公开(公告)号：US09252696B2

公开(公告)日：2016-02-02

申请号：US13973893

申请日：2013-08-22

申请人： Semiconductor Components Industries, LLC

发明人： Tsutomu Murata

IPC分类号： H02P1/00 ,  H02P25/02

CPC分类号： H02P25/027 ,  H02P25/028 ,  H02P25/032 ,  H02P25/034

摘要： A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil. The drive signal is such that nonconducting periods are set before and after a positive current conducting period and the nonconducting periods are set before and after a negative current conducting period. A driver unit generates the drive current in response to the drive signal generated by the drive signal generating unit and then supplies the drive current to the coil. The drive signal generating unit sets the width of a nonconducting period such that, after the drive start of the linear vibration motor, the width of a nonconducting period to be set before at least the first conducting period of the drive signal is shorter than the width of a nonconducting period to be set before each conducting period during steady operation of the linear vibration motor.

摘要翻译： 驱动信号生成单元生成用于交替地向线圈传送正电流和负电流的驱动信号。 驱动信号使得在正电流导通时段之前和之后设置非导通周期，并且在负电流导通周期之前和之后设置非导通周期。 驱动器单元响应于由驱动信号产生单元产生的驱动信号产生驱动电流，然后将驱动电流提供给线圈。 驱动信号发生单元设定非导通周期的宽度，使得在线性振动马达的驱动启动之后，至少在驱动信号的第一导通周期之前要设置的非导通周期的宽度比宽度 在线性振动电动机的稳定运行期间在每个传导期间之前设定的非导通时段。

公开(公告)号：US20160006386A1

公开(公告)日：2016-01-07

申请号：US14857167

申请日：2015-09-17

申请人： Renesas Electronics Corporation

发明人： Minoru KUROSAWA ,  Kenji YOSHIDA ,  Osamu YAMASHITA

IPC分类号： H02P25/02

CPC分类号： H02P25/028 ,  H02P25/034

摘要： A motor driver controller including a difference control section; a driver output section; a drive current detection amplifier; and a load short-circuit detection circuit. A motor and sensing resistor is coupled in series and coupled to an output terminal of the driver output section. The difference control section generates a drive voltage command signal in response to a drive current command value and a drive current detection signal. The driver output section drives the motor and sensing resistor, in response to the drive voltage command signal, and a drive current detection amplifier generates a signal fed to the difference control section, in response to a drive current of the sensing resistor. The load short-circuit detection circuit detects an abnormal oscillation waveform signal caused by a short-circuit state between the both ends of the motor.

摘要翻译： 一种电机驱动器控制器，包括差分控制部分; 驱动器输出部分; 驱动电流检测放大器; 和负载短路检测电路。 电动机和感测电阻器串联耦合并耦合到驱动器输出部分的输出端子。 差分控制部分根据驱动电流指令值和驱动电流检测信号产生驱动电压指令信号。 响应于驱动电压指令信号，驱动器输出部驱动电动机和感测电阻，并且驱动电流检测放大器响应于感测电阻器的驱动电流产生馈送到差分控制部分的信号。 负载短路检测电路检测由电动机的两端之间的短路状态引起的异常振荡波形信号。

公开(公告)号：US20150256731A1

公开(公告)日：2015-09-10

申请号：US14604005

申请日：2015-01-23

申请人： ROHM CO., LTD.

发明人： Tatsuya NINOMIYA

IPC分类号： H04N5/238 ,  H02P25/02 ,  H04N5/232

CPC分类号： H04N5/238 ,  G01R23/00 ,  G02B7/08 ,  G03B3/10 ,  H02P25/028 ,  H02P25/034 ,  H04N5/2254 ,  H04N5/23212 ,  H04N5/23287

摘要： A driving circuit for controlling a driving current is provided. A D/A converter has a precision of N bits and outputs a control signal for a driving current to a current driver. A logic unit receives input control data of M bits (M>N) and outputs intermediate control data of N bits to the D/A converter. A data extraction unit divides the input control data into a first data having N bits from the MSB and a second data having (M−N) bits from the LSB. A counter accumulatively adds the second data to generate a count. A carry detection unit asserts a carry signal when a carry at the MSB of the count is generated by the counter. An output control unit 66 converts the intermediate control data into the first data or a third data, in which 1 LSB is added to the first data, according to the carry signal.

摘要翻译： 提供了用于控制驱动电流的驱动电路。 D / A转换器具有N位的精度，并向驱动器输出用于驱动电流的控制信号。 逻辑单元接收M位（M> N）的输入控制数据，并向D / A转换器输出N位的中间控制数据。 数据提取单元将输入控制数据分割成具有来自MSB的N位的第一数据和来自LSB的（M-N）位的第二数据。 计数器累积地添加第二数据以生成计数。 当计数器产生计数的MSB的进位时，进位检测单元断言进位信号。 输出控制单元66根据进位信号将中间控制数据转换为第一数据或第三数据，其中1 LSB被添加到第一数据。

公开(公告)号：US08896746B2

公开(公告)日：2014-11-25

申请号：US13206665

申请日：2011-08-10

申请人： Tatsuya Ninomiya

发明人： Tatsuya Ninomiya

IPC分类号： H04N5/232 ,  H02P25/02

CPC分类号： H02P25/028 ,  H02P25/034

摘要： A driving circuit drives a voice coil motor having a spring return mechanism. A driving current generating unit supplies, to a coil of the voice coil motor, a driving current that corresponds to an analog control signal. Waveform memory stores digital waveform data which indicates the time waveform of a driving current to be supplied to the voice coil motor. A predetermined frequency component is removed from the frequency components of the waveform data. A control unit reads out the waveform data from the waveform memory at a rate that corresponds to the resonance frequency of the voice coil motor, and outputs the waveform data thus read out as a digital code. A D/A converter converts a digital code into an analog control signal, and outputs the analog control signal to the driving current generating unit.

摘要翻译： 驱动电路驱动具有弹簧复位机构的音圈电机。 驱动电流产生单元向音圈电动机的线圈提供对应于模拟控制信号的驱动电流。 波形存储器存储指示要提供给音圈电机的驱动电流的时间波形的数字波形数据。 从波形数据的频率分量中去除预定的频率分量。 控制单元以与音圈马达的共振频率相对应的速度从波形存储器读出波形数据，并输出这样读出的波形数据作为数字代码。 D / A转换器将数字代码转换为模拟控制信号，并将模拟控制信号输出到驱动电流产生单元。

公开(公告)号：US08519645B2

公开(公告)日：2013-08-27

申请号：US13013263

申请日：2011-01-25

申请人： Tsutomu Murata

发明人： Tsutomu Murata

IPC分类号： H02P1/00

CPC分类号： H02P25/027 ,  H02P25/028 ,  H02P25/032 ,  H02P25/034

摘要： A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil. The drive signal is such that nonconducting periods are set before and after a positive current conducting period and the nonconducting periods are set before and after a negative current conducting period. A driver unit generates the drive current in response to the drive signal generated by the drive signal generating unit and then supplies the drive current to the coil. The drive signal generating unit sets the width of a nonconducting period such that, after the drive start of the linear vibration motor, the width of a nonconducting period to be set before at least the first conducting period of the drive signal is shorter than the width of a nonconducting period to be set before each conducting period during steady operation of the linear vibration motor.

摘要翻译： 驱动信号生成单元生成用于交替地向线圈传送正电流和负电流的驱动信号。 驱动信号使得在正电流导通时段之前和之后设置非导通周期，并且在负电流导通周期之前和之后设置非导通周期。 驱动器单元响应于由驱动信号产生单元产生的驱动信号产生驱动电流，然后将驱动电流提供给线圈。 驱动信号发生单元设定非导通周期的宽度，使得在线性振动马达的驱动启动之后，至少在驱动信号的第一导通周期之前要设置的非导通周期的宽度比宽度 在线性振动电动机的稳定运行期间在每个传导期间之前设定的非导通时段。

公开(公告)号：US20130148240A1

公开(公告)日：2013-06-13

申请号：US13316128

申请日：2011-12-09

申请人： TIMOTHY A. FERRIS ,  ROBERT P. RYAN

发明人： TIMOTHY A. FERRIS ,  ROBERT P. RYAN

IPC分类号： G11B17/02

CPC分类号： G11B19/047 ,  G11B5/54 ,  G11B19/20 ,  H02P3/14 ,  H02P25/028

摘要： A disk drive is disclosed comprising a disk, a spindle motor operable to rotate the disk, a head actuated over the disk, an interface operable to receive a host supply voltage, and a capacitor. The host supply voltage is used to charge the capacitor to a capacitor voltage higher than the host supply voltage. During a power failure, the host supply voltage stops charging the capacitor, and a motor supply voltage is generated from the spindle motor. The capacitor voltage is used to operate control circuitry, and when the capacitor voltage decays below the motor supply voltage, the motor supply voltage charges the capacitor.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，可操作以旋转盘的主轴马达，在盘上致动的头，可操作以接收主机电源电压的接口和电容器。 主电源电压用于将电容器充电到高于主机电源电压的电容器电压。 在电源故障期间，主机电源电压停止对电容器充电，并且主轴电机产生电机电源电压。 电容电压用于操作控制电路，当电容电压降到低于电机电源电压时，电机电源电压对电容充电。

公开(公告)号：US20110181208A1

公开(公告)日：2011-07-28

申请号：US13012568

申请日：2011-01-24

申请人： Tsutomu MURATA

发明人： Tsutomu MURATA

IPC分类号： H02K33/14

CPC分类号： H02P25/028 ,  H02P25/034

摘要： A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil with a nonconducting period inserted between conducting periods. A driver unit generates a drive current in response to the drive signal generated by the drive signal generating unit and supplies the drive current to a coil. An induced voltage detector detects an induced voltage occurring in the coil during the nonconducting period. A zero-cross detecting unit detects the zero cross of the induced voltage detected by the induced voltage detector. The drive signal generator estimates the eigen frequency of the linear vibration motor based on a detected position of the zero cross, and the frequency of the drive signal is brought close to the estimated eigen frequency.

摘要翻译： 驱动信号生成单元生成用于交替地将正电流和负电流递送到线圈的驱动信号，该线圈具有插入导通周期之间的非导通时段。 驱动器单元响应于由驱动信号生成单元产生的驱动信号产生驱动电流，并将驱动电流提供给线圈。 感应电压检测器检测在非导通期间在线圈中产生的感应电压。 零交叉检测单元检测由感应电压检测器检测到的感应电压的零交叉。 驱动信号发生器基于检测到的零交叉位置来估计线性振动电动机的本征频率，驱动信号的频率接近估计的本征频率。