专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08791664B2 Systems and methods for adaptive torque adjustment and motor control 有权
标题翻译：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
申请人： Ravishanker Krishnamoorthy , Edy Susanto , Cheng Yong Teoh , Foo Leng Leong
发明人： Ravishanker Krishnamoorthy , Edy Susanto , Cheng Yong Teoh , Foo Leng Leong
IPC分类号： H02P27/00
CPC分类号： H02P6/08 , H02P6/06 , H02P6/15 , H02P6/28
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。

2. 发明授权

US08472233B1 Circuits and methods for multiple programmable memory using one-time programmable memory 有权
标题翻译：使用一次性可编程存储器的多个可编程存储器的电路和方法
公开(公告)号：US08472233B1
公开(公告)日：2013-06-25
申请号：US13461624
申请日：2012-05-01
申请人： Ravishanker Krishnamoorthy , Foo Leng Leong
发明人： Ravishanker Krishnamoorthy , Foo Leng Leong
IPC分类号： G11C17/00
CPC分类号： G11C17/18
摘要： Circuits and methods for utilizing multiple programmable memory using one-time programmable (OTP) memory in a device controller. The device controller generally includes a plurality of OTP memories, each capable of being programmed once and only once; a state machine configured to enable writing updated parameter information to an available OTP memory and to provide a control signal indicating a next OTP memory to which next received data are to be written, and read logic coupled to the plurality of OTP memories, the read logic configured to read an output from a most recently programmed OTP memory. The method generally includes receiving updated parameter information to be stored in the memory, programming one of a plurality of one-time programmable (OTP) memories with the updated parameter information, indicating an availability of a next OTP memory, and reading an output from a most recently programmed OTP memory.
摘要翻译：在设备控制器中使用一次性可编程（OTP）存储器来利用多个可编程存储器的电路和方法。设备控制器通常包括多个OTP存储器，每个OTP存储器能够被编程一次且仅一次; 状态机，被配置为使得能够向可用的OTP存储器写入更新的参数信息，并且提供指示下一个接收数据要被写入的下一个OTP存储器的控制信号，以及耦合到所述多个OTP存储器的读逻辑，所述读逻辑配置为读取最近编程的OTP存储器的输出。该方法通常包括接收要存储在存储器中的更新的参数信息，用更新的参数信息编程多个一次可编程（OTP）存储器中的一个，指示下一个OTP存储器的可用性，以及从最近编程的OTP内存。

3. 发明授权

US08164285B2 External disturbance detection system and method for two-phase motor control systems 有权
公开(公告)号：US08164285B2
公开(公告)日：2012-04-24
申请号：US12480259
申请日：2009-06-08
申请人： Foo Leng Leong , Edy Susanto , Ravishanker Krishnamoorthy
发明人： Foo Leng Leong , Edy Susanto , Ravishanker Krishnamoorthy
IPC分类号： H02P6/00
CPC分类号： H02P6/06
摘要： A system includes a power control module, a period determination module, and a control module. The power control module controls current through stator coils of a motor to rotate a rotor. The period determination module determines a first length of time between a first set of induced stator coil voltages and determines a second length of time between a second set of induced stator coil voltages. The control module determines whether an external disturbance disturbs rotation of the rotor based on a difference between the first and second lengths of time.

4. 发明授权

US08807956B2 Apparatus and method for controlling speed of a fan via a first control module connected by a cable and/or conductors between a motor and a second control module 有权
标题翻译：用于通过第一控制模块控制风扇的装置和方法，所述第一控制模块通过电缆和/或电动机和第二控制模块之间的导体连接
公开(公告)号：US08807956B2
公开(公告)日：2014-08-19
申请号：US13233593
申请日：2011-09-15
申请人： Ravishanker Krishnamoorthy , Foo Leng Leong , Edy Susanto , Yayue Zhang , Cheng Yong Teoh
发明人： Ravishanker Krishnamoorthy , Foo Leng Leong , Edy Susanto , Yayue Zhang , Cheng Yong Teoh
IPC分类号： F04B45/06 , F04B35/04 , F04B49/00
CPC分类号： F04D27/004 , F04D13/0693 , F04D15/0094 , F04D25/0693 , F04D27/001 , H02K29/12 , H02K29/14 , H02P6/08 , H02P6/182 , H02P29/032
摘要： A fan system includes a motor control module external to a motor housing of a fan assembly. The motor control module includes a speed control module. The fan assembly includes a fan and the motor housing. One or more first conductors are configured to connect the motor control module to a motor in the motor housing. One or more second conductors are configured to connect the motor control module to a host device control module. The host device control module is separate from the motor control module and is configured to generate a control signal. The speed control module is configured to control speed of the fan based on the control signal.
摘要翻译：风扇系统包括在风扇组件的电动机壳体外部的电动机控制模块。电动机控制模块包括速度控制模块。风扇组件包括风扇和电动机壳体。一个或多个第一导体被配置为将电动机控制模块连接到电动机壳体中的电动机。一个或多个第二导体被配置为将电动机控制模块连接到主机设备控制模块。主机设备控制模块与电机控制模块分离，并被配置为产生控制信号。速度控制模块被配置为基于控制信号来控制风扇的速度。

5. 发明授权

US08390226B1 Voltage mode using pseudo current limit 有权
标题翻译：电压模式使用伪电流限制
公开(公告)号：US08390226B1
公开(公告)日：2013-03-05
申请号：US12177084
申请日：2008-07-21
申请人： Ravishanker Krishnamoorthy , Foo Leng Leong
发明人： Ravishanker Krishnamoorthy , Foo Leng Leong
IPC分类号： H02P7/00
CPC分类号： H02P6/08 , H02P6/28 , H02P23/20
摘要： According to an aspect of the invention, a method includes: applying a voltage across a motor to accelerate the motor over a predetermined number of time intervals; determining whether a current flowing through the motor decreases as the motor accelerates over the predetermined number of time intervals; and increasing the voltage by a predetermined voltage amount during each time interval if it is determined that the current is decreasing.
摘要翻译：根据本发明的一个方面，一种方法包括：在电动机上施加电压以在预定数量的时间间隔上加速电动机; 确定流过电动机的电流是否随着电动机超过预定数量的时间间隔而减小; 并且如果确定电流正在减小，则在每个时间间隔期间将电压增加预定电压量。

6. 发明授权

US08314581B1 Motor spindle control system and method 有权
标题翻译：电机主轴控制系统及方法
公开(公告)号：US08314581B1
公开(公告)日：2012-11-20
申请号：US12965259
申请日：2010-12-10
申请人： Ravishanker Krishnamoorthy , Foo Leng Leong
发明人： Ravishanker Krishnamoorthy , Foo Leng Leong
IPC分类号： H02P6/18
CPC分类号： H02P6/182 , G11B19/28 , H02P6/10
摘要： A control system and method for a multi-phase motor substantially reduces or eliminates jitter resulting from drive mismatch by replacing a conventional trapezoidal drive profile with a drive profile that causes the voltage applied across active phases of the motor to match the back-EMF across those phases. In an ideal motor, the back-EMF is substantially sinusoidal, and although the drive profile applied to each phase is not truly substantially sinusoidal, the drive voltage across the active phases is substantially sinusoidal. In a non-ideal motor, the back-EMF is not truly sinusoidal and the drive profiles applied to each phase are calculated to cause the drive voltage across the active phases to match the back-EMF across those phases.
摘要翻译：用于多相电动机的控制系统和方法通过用驱动轮廓代替传统的梯形驱动轮廓来显着地减少或消除由于驱动器失配而产生的抖动，该驱动轮廓导致在电动机的有效相上施加的电压匹配电动机的反电动势阶段在理想的电动机中，反电动势基本上是正弦的，并且虽然施加到每个相的驱动轮廓不是真正基本上是正弦的，但是有效相两端的驱动电压基本上是正弦的。在非理想电动机中，反电动势不是真正的正弦曲线，并且计算应用于每个相位的驱动器曲线，以使有源相之间的驱动电压与这些相位之间的反电动势匹配。

7. 发明申请

US20120206072A1 EXTERNAL DISTURBANCE DETECTION SYSTEM AND METHOD FOR TWO-PHASE MOTOR CONTROL SYSTEMS 有权
标题翻译：用于两相电动机控制系统的外部干扰检测系统和方法
公开(公告)号：US20120206072A1
公开(公告)日：2012-08-16
申请号：US13453661
申请日：2012-04-23
申请人： Foo Leng Leong , Edy Susanto , Ravishanker Krishnamoorthy
发明人： Foo Leng Leong , Edy Susanto , Ravishanker Krishnamoorthy
IPC分类号： H02P6/12
CPC分类号： H02P6/06
摘要： A system includes a power control module, a period determination module, and a control module. The power control module controls current through stator coils of a motor to rotate a rotor. The period determination module determines a first length of time between a first set of induced stator coil voltages and determines a second length of time between a second set of induced stator coil voltages. The control module determines whether an external disturbance disturbs rotation of the rotor based on a difference between the first and second lengths of time.
摘要翻译：系统包括功率控制模块，周期确定模块和控制模块。功率控制模块通过电动机的定子线圈控制电流来旋转转子。周期确定模块确定第一组感应定子线圈电压之间的第一时间长度，并确定第二组感应定子线圈电压之间的第二时间长度。控制模块基于第一和第二时间长度之间的差来确定外部干扰是否干扰转子的旋转。

8. 发明授权

US08044616B1 Method and apparatus for initializing operation of a disk drive 有权
标题翻译：用于初始化磁盘驱动器的操作的方法和装置
公开(公告)号：US08044616B1
公开(公告)日：2011-10-25
申请号：US12340944
申请日：2008-12-22
申请人： Ravishanker Krishnamoorthy , Foo Leng Leong
发明人： Ravishanker Krishnamoorthy , Foo Leng Leong
IPC分类号： H02P1/00
CPC分类号： G11B19/2054
摘要： A system for controlling a disk in a disk drive includes a motor control circuit and a first circuit that retrieves firmware speed control instructions from non-volatile memory. During retrieval of the firmware speed control instructions, at least one of the motor control circuit determines a position of the disk, one of the first circuit and the motor control circuit spins up the disk and the motor control circuit ramps up a speed of the disk. The first circuit performs speed control of the disk based on the firmware speed control instructions.
摘要翻译：用于控制磁盘驱动器中的磁盘的系统包括马达控制电路和从非易失性存储器检索固件速度控制指令的第一电路。在检索固件速度控制指令期间，电动机控制电路中的至少一个确定盘的位置，第一电路和电动机控制电路中的一个将盘旋转并且电动机控制电路升高盘的速度。第一个电路基于固件速度控制指令执行磁盘的速度控制。

9. 发明申请

US20100117571A1 EXTERNAL DISTURBANCE DETECTION SYSTEM AND METHOD FOR TWO-PHASE MOTOR CONTROL SYSTEMS 有权
标题翻译：用于两相电动机控制系统的外部干扰检测系统和方法
公开(公告)号：US20100117571A1
公开(公告)日：2010-05-13
申请号：US12480259
申请日：2009-06-08
申请人： Foo Leng Leong , Edy Susanto , Ravishanker Krishnamoorthy
发明人： Foo Leng Leong , Edy Susanto , Ravishanker Krishnamoorthy
IPC分类号： H02P6/06
CPC分类号： H02P6/06
摘要： A system includes a power control module, a period determination module, and a control module. The power control module controls current through stator coils of a motor to rotate a rotor. The period determination module determines a first length of time between a first set of induced stator coil voltages and determines a second length of time between a second set of induced stator coil voltages. The control module determines whether an external disturbance disturbs rotation of the rotor based on a difference between the first and second lengths of time.
摘要翻译：系统包括功率控制模块，周期确定模块和控制模块。功率控制模块通过电动机的定子线圈控制电流来旋转转子。周期确定模块确定第一组感应定子线圈电压之间的第一时间长度，并确定第二组感应定子线圈电压之间的第二时间长度。控制模块基于第一和第二时间长度之间的差来确定外部干扰是否干扰转子的旋转。

10. 发明授权

US08405332B1 Method to eliminate current surge during spindle spin up 有权
标题翻译：在主轴旋转时消除电流浪涌的方法
公开(公告)号：US08405332B1
公开(公告)日：2013-03-26
申请号：US12705444
申请日：2010-02-12
申请人： Ravishanker Krishnamoorthy , Foo Leng Leong
发明人： Ravishanker Krishnamoorthy , Foo Leng Leong
IPC分类号： H02H7/09
CPC分类号： H02P6/002 , H02P6/08 , H02P6/28 , H02P23/20
摘要： Systems, methods and computer program products for reducing or removing current spikes generated during a current recirculation period associated with phase switching in a spindle motor are described. In some implementations, the duty cycle of the drive signals applied to the windings of the spindle motor can be adjusted to reduce or eliminate the current surge resulting from current recirculation. In some implementations, the duty cycle of the drive signals during spin-up can be reduced based on a current limit, and the reduced duty cycle can then be used to drive the spindle motor taking into account of current surges in the supply current.
摘要翻译：描述了用于减少或消除与主轴电机中的相位切换相关的当前再循环期间产生的电流尖峰的系统，方法和计算机程序产品。在一些实施方案中，可以调整施加到主轴电动机的绕组的驱动信号的占空比以减少或消除由电流再循环产生的电流浪涌。在一些实施方案中，可以基于电流限制来减小启动期间的驱动信号的占空比，并且然后可以使用减小的占空比来考虑电源电流中的电流浪涌来驱动主轴电动机。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式