Fan motor control systems
    1.
    发明授权
    Fan motor control systems 有权
    风扇电机控制系统

    公开(公告)号:US08277198B2

    公开(公告)日:2012-10-02

    申请号:US12469196

    申请日:2009-05-20

    IPC分类号: F04B49/06 F04B35/04

    摘要: A control system for a fan includes a control housing that is external to a fan housing for the fan. At least one fan control module is within the control housing and communicates remotely with terminals within the fan housing via at least one wire. The at least one fan control module includes a detection module. The detection module detects induced voltages in at least one of a plurality of stator coils within the fan housing via the at least one wire without receiving signals from a sensor in the fan housing.

    摘要翻译: 用于风扇的控制系统包括在风扇外壳的外部的控制壳体。 至少一个风扇控制模块位于控制壳内,并通过至少一根导线远程与风扇外壳内的端子进行通信。 所述至少一个风扇控制模块包括检测模块。 检测模块经由至少一根线检测风扇壳体内的多个定子线圈中的至少一个中的感应电压,而不从风扇壳体内的传感器接收信号。

    VCM PWM control architecture for power saving in hard disk drives
    2.
    发明授权
    VCM PWM control architecture for power saving in hard disk drives 有权
    VCM PWM控制架构,用于在硬盘驱动器中节能

    公开(公告)号:US08144420B1

    公开(公告)日:2012-03-27

    申请号:US12916052

    申请日:2010-10-29

    IPC分类号: G11B21/02 G11B15/18

    CPC分类号: G11B19/02 G06F1/32

    摘要: The power required by a voice coil motor (VCM) to maintain the head in the data region of a disk drive during an idle mode is further reduced. The current supplied to the VCM is switched on and off. This takes advantage of the inherent capacitance and inductance in the VCM, which maintains a current after the current supply is switched off. The current will slowly decay, with it being switched on again before it reaches a level where the average value won't offset the flex bias. In one embodiment, the current is maintained in a single direction, to offset the flex bias which pushes in one direction. Digital switches are used to reduce the power consumption of the control circuitry.

    摘要翻译: 音圈电机(VCM)在空闲模式期间将磁头保持在磁盘驱动器的数据区域所需的功率进一步降低。 提供给VCM的电流打开和关闭。 这充分利用了VCM中的固有电容和电感,该电容在电流关断后保持电流。 电流将慢慢衰减,在其达到平均值不会抵消挠曲偏差的水平之前再次接通。 在一个实施例中,电流保持在单个方向上,以抵消在一个方向上推动的柔性偏压。 数字开关用于降低控制电路的功耗。

    SYSTEMS AND METHODS FOR ADAPTIVE TORQUE ADJUSTMENT AND MOTOR CONTROL
    3.
    发明申请
    SYSTEMS AND METHODS FOR ADAPTIVE TORQUE ADJUSTMENT AND MOTOR CONTROL 有权
    用于自适应扭矩调整和电机控制的系统和方法

    公开(公告)号:US20110181232A1

    公开(公告)日:2011-07-28

    申请号:US13010928

    申请日:2011-01-21

    IPC分类号: H02P27/08

    摘要: A system includes a target speed module and a pulse-width modulation (PWM) control module. The target speed module is configured to provide a first waveform based on a first speed setting for a motor. A start of a first cycle of the first waveform corresponds to at least one of a first current or a first voltage. The PWM control module is configured to shift a phase of the first waveform by a torque angle adjustment value to generate a second waveform. A start of a first cycle of the second waveform corresponds to at least one of a second voltage or a second current. The second voltage is greater than the first voltage, and the second current is greater than the first current. The PWM control module is configured to control the motor based on the second waveform.

    摘要翻译: 系统包括目标速度模块和脉冲宽度调制(PWM)控制模块。 目标速度模块被配置为基于用于电动机的第一速度设置来提供第一波形。 第一波形的第一周期的开始对应于第一电流或第一电压中的至少一个。 PWM控制模块被配置为将第一波形的相位移位一个转矩角度调整值以产生第二波形。 第二波形的第一周期的开始对应于第二电压或第二电流中的至少一个。 第二电压大于第一电压,第二电流大于第一电流。 PWM控制模块被配置为基于第二波形来控制电动机。

    Output stage and related logic control method applied to source driver/chip
    4.
    发明授权
    Output stage and related logic control method applied to source driver/chip 有权
    输出级和相关逻辑控制方法应用于源驱动器/芯片

    公开(公告)号:US07986290B2

    公开(公告)日:2011-07-26

    申请号:US12124397

    申请日:2008-05-21

    申请人: Cheng-Yong Yang

    发明人: Cheng-Yong Yang

    IPC分类号: H02H11/00 H03K19/094

    摘要: Output stage and related method applied to source driver/chip of LCD panel. While performing dot polarization inversion for even/odd channels of LCD panel, n-channel and p-channel MOS transistors of symmetric layout are respectively adopted for alternately transmitting a positive polarization signal of higher swing range and a negative polarization signal of lower swing range from corresponding drivers of asymmetric layout to the even/odd channels, such that a layout area for alternating polarizations can be reduced. Also, the invention directly ties inputs of the output drivers to VDD or VSS so as to turn off the drivers for providing high impedance at the even/odd channels when necessary.

    摘要翻译: 输出级和相关方法应用于LCD面板的源驱动器/芯片。 在对LCD面板的偶数/奇数通道执行点偏振反转时,分别采用对称布局的n沟道和p沟道MOS晶体管,以交替地传输较高摆动范围的正偏振信号和较低摆幅范围的负极化信号 对应于非偶数/奇数通道布局的驱动器,从而可以减少用于交替偏振的布局区域。 此外,本发明将输出驱动器的输入直接连接到VDD或VSS,以便在必要时关闭驱动器以在偶数/奇数通道提供高阻抗。

    Adjustable frequency PWM driver
    5.
    发明授权
    Adjustable frequency PWM driver 有权
    可调频PWM驱动器

    公开(公告)号:US07839103B1

    公开(公告)日:2010-11-23

    申请号:US12436482

    申请日:2009-05-06

    IPC分类号: H02P25/08

    CPC分类号: G11B19/28 H02P25/034

    摘要: A driver for a motor in a device includes a reference generator to generate a reference value. A clock management module receives a plurality of clock signals. Each clock signal has a corresponding frequency that is different relative to the corresponding frequency of another clock signal. A clock management module selects a different clock signal of the plurality of clock signals for output from the clock management module at different times during operation of the device. A ramp generating module generates a ramp signal in accordance with the corresponding frequency associated with the selected clock signal. A first pulse width modulation module receives the reference signal and the ramp signal. The first pulse width modulation module outputs a first pulse width modulation driver signal for driving the motor based on the reference signal and the ramp signal.

    摘要翻译: 用于装置中的电动机的驱动器包括用于产生参考值的参考发生器。 时钟管理模块接收多个时钟信号。 每个时钟信号具有相对于另一个时钟信号的相应频率不同的对应频率。 时钟管理模块在设备的操作期间的不同时间,选择时钟管理模块输出的多个时钟信号的不同时钟信号。 斜坡发生模块根据与选择的时钟信号相关联的相应频率产生斜坡信号。 第一脉冲宽度调制模块接收参考信号和斜坡信号。 第一脉冲宽度调制模块基于参考信号和斜坡信号输出用于驱动电动机的第一脉冲宽度调制驱动器信号。

    MOTOR CONTROL SYSTEM
    6.
    发明申请
    MOTOR CONTROL SYSTEM 有权
    电机控制系统

    公开(公告)号:US20100119386A1

    公开(公告)日:2010-05-13

    申请号:US12469196

    申请日:2009-05-20

    IPC分类号: F04D25/08 H02P6/18

    摘要: A control system for a fan includes a control housing that is external to a fan housing for the fan. At least one fan control module is within the control housing and communicates remotely with terminals within the fan housing via at least one wire. The at least one fan control module includes a detection module. The detection module detects induced voltages in at least one of a plurality of stator coils within the fan housing via the at least one wire without receiving signals from a sensor in the fan housing.

    摘要翻译: 用于风扇的控制系统包括在风扇外壳的外部的控制壳体。 至少一个风扇控制模块在控制壳体内,并通过至少一根导线与风扇壳体内的端子远程通信。 所述至少一个风扇控制模块包括检测模块。 检测模块经由至少一根线检测风扇壳体内的多个定子线圈中的至少一个中的感应电压,而不从风扇壳体内的传感器接收信号。

    Adjustable frequency PWM driver
    7.
    发明授权
    Adjustable frequency PWM driver 有权
    可调频PWM驱动器

    公开(公告)号:US07531975B1

    公开(公告)日:2009-05-12

    申请号:US11103755

    申请日:2005-04-12

    IPC分类号: H02P25/08

    CPC分类号: G11B19/28 H02P25/034

    摘要: A spindle/voice coil motor (VCM) driver includes a clock management module that receives a system clock signal and a second clock signal, and that selects one of the system clock signal or the second clock signal as a selected clock signal. A reference generating module generates a reference signal. A ramp generating module receives the selected clock signal and generates a ramp signal. A pulse width modulation (PWM) module receives the reference signal and the ramp signal and outputs a first PWM driver signal based thereon.

    摘要翻译: 主轴/音圈电机(VCM)驱动器包括时钟管理模块,其接收系统时钟信号和第二时钟信号,并且选择系统时钟信号或第二时钟信号之一作为所选择的时钟信号。 参考生成模块生成参考信号。 斜坡发生模块接收所选择的时钟信号并产生斜坡信号。 脉冲宽度调制(PWM)模块接收参考信号和斜坡信号,并基于此输出第一PWM驱动器信号。

    Motor spindle control system and method
    8.
    发明授权
    Motor spindle control system and method 有权
    电机主轴控制系统及方法

    公开(公告)号:US07098621B1

    公开(公告)日:2006-08-29

    申请号:US11104683

    申请日:2005-04-12

    IPC分类号: G05B23/02

    CPC分类号: H02P6/182

    摘要: In a method for measuring motor speed and position by detecting the back EMF generated during pole-pair interactions, a separate respective duration of a power phase suppression signal, that is set during back EMF detection, is stored in memory for each respective pole. The separate respective duration values are determined during a calibration phase by iteratively lengthening each respective duration one unit at a time (up to a maximum value) until no part of the respective back EMF signal occurs outside the suppression signal duration, and those values are stored. During operation, the approach of a pole-pair interaction may be determined from the electrical cycle of the power supply, and then the stored duration value is used to control the state of the suppression signal.

    摘要翻译: 在用于通过检测在极对相互作用期间产生的反电动势来测量电动机速度和位置的方法中,在反电动势检测期间设置的功率相位抑制信号的单独的相应持续时间被存储在每个相应极的存储器中。 在校准阶段期间通过每次相应地延长一个单位一个单位(最多达到最大值),直到相应的反EMF信号的部分不在抑制信号持续时间之外发生,并且这些值被存储 。 在运行期间,可以从电源的电周期确定极对相互作用的方法,然后使用存储的持续时间值来控制抑制信号的状态。

    Systems and methods for adaptive torque adjustment and motor control
    9.
    发明授权
    Systems and methods for adaptive torque adjustment and motor control 有权
    用于自适应扭矩调节和电机控制的系统和方法

    公开(公告)号:US08791664B2

    公开(公告)日:2014-07-29

    申请号:US13010928

    申请日:2011-01-21

    IPC分类号: H02P27/00

    摘要: A system includes a target speed module and a pulse-width modulation (PWM) control module. The target speed module is configured to provide a first waveform based on a first speed setting for a motor. A start of a first cycle of the first waveform corresponds to at least one of a first current or a first voltage. The PWM control module is configured to shift a phase of the first waveform by a torque angle adjustment value to generate a second waveform. A start of a first cycle of the second waveform corresponds to at least one of a second voltage or a second current. The second voltage is greater than the first voltage, and the second current is greater than the first current. The PWM control module is configured to control the motor based on the second waveform.

    摘要翻译: 系统包括目标速度模块和脉冲宽度调制(PWM)控制模块。 目标速度模块被配置为基于用于电动机的第一速度设置来提供第一波形。 第一波形的第一周期的开始对应于第一电流或第一电压中的至少一个。 PWM控制模块被配置为将第一波形的相位移位一个转矩角度调整值以产生第二波形。 第二波形的第一周期的开始对应于第二电压或第二电流中的至少一个。 第二电压大于第一电压,第二电流大于第一电流。 PWM控制模块被配置为基于第二波形来控制电动机。