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    Brushless DC motor control method and apparatus for reduced commutation noise
    11.
    发明授权
    Brushless DC motor control method and apparatus for reduced commutation noise 失效
    无刷直流电动机控制方法及减少换向噪音的装置

    公开(公告)号：US6002226A

    公开(公告)日：1999-12-14

    申请号：US99007

    申请日：1998-06-17

    Applicant: Steven James Collier-Hallman ,  Julie Ann Kleinau ,  Dennis B. Skellenger

    Inventor： Steven James Collier-Hallman ,  Julie Ann Kleinau ,  Dennis B. Skellenger

    IPC: H02P6/10 ,  H01R39/46

    CPC classification number: H02P6/10

    Abstract: A brushless DC motor modifies motor commutation events to reduce noise by providing overlapping activation of the switch being deactivated with the switch being newly activated so that three switches are temporarily activated. The newly activated switch is pulse width modulated with a motor torque controlling duty cycle, and the switch being deactivated is pulse width modulated synchronously with the newly activated switch but with a duty cycle decreasing from the torque controlling duty cycle. The decreasing modulation of the switch being deactivated allows a slower current decrease in the phase turning off to reduce or eliminate the disturbances, and thus the noise. The decreasing modulation is preferably exponential in manner, with a time constant varying inversely with motor speed so that the duty cycle reaches a predetermined minimum in a predetermined maximum number of motor electrical degrees. The decreasing modulation may be switched on at low motor speeds where its noise reduction is required and switched off at higher motor speeds where the potential for interference with commutation is greater. The decreasing modulation is applicable in a dual switching mode in which each activated switch, except for the switch being deactivated in commutation, is pulse width modulated at the torque controlling duty cycle, or in a modified single switching mode in which the activated switch of one of the upper or lower groups is always closed continuously during its activation, except for commutation, during which the switch remaining on, which alternates between the groups, is closed continuously. Each mode of operation is applied in the motor speed/torque region to which it is best suited.

    Abstract translation: 无刷直流电动机通过在开关被新激活的情况下通过提供交换机的重叠激活来改变电动机换向事件以减少噪声，从而使三个开关暂时被激活。 新启动的开关通过电机转矩控制占空比进行脉冲宽度调制，并且禁用的开关与新启动的开关同步脉宽调制，但占空比从转矩控制占空比下降。 开关减小的调制被禁用允许相位关断中的较慢的电流减小以减少或消除干扰，从而减少噪声。 减小的调制优选地是指数方式，其中时间常数与电动机速度成反比变化，使得占空比在预定的最大数量的电动机电度中达到预定的最小值。 降低的调制可以在需要减少噪声的低电机速度下接通，并且在更换电机的电机速度更高的情况下关闭。 减小的调制适用于双重切换模式，其中除了开关在换向中被禁用之外，每个被激活的开关在扭矩控制占空比下进行脉宽调制，或者在修改的单次切换模式中，其中一个 上，下组在其激活期间总是被连续地闭合，除了换向之外，在组中之间交替存在的开关被连续地闭合。 每种操作模式都适用于最适合的电机速度/转矩区域。

    Electro-hydraulic power steering control with motor speed switching and fluid temperature compensation of standby switch-points
    12.
    发明授权
    Electro-hydraulic power steering control with motor speed switching and fluid temperature compensation of standby switch-points 失效
    电动液压动力转向控制，具有电机转速和待机切换点的液温补偿

    公开(公告)号：US5967253A

    公开(公告)日：1999-10-19

    申请号：US962194

    申请日：1997-10-31

    Applicant: Steven James Collier-Hallman

    Inventor： Steven James Collier-Hallman

    IPC: B62D6/00 ,  B62D5/065 ,  B62D5/07 ,  B62D107/00 ,  B62D137/00 ,  B62D5/06

    CPC classification number: B62D5/065

    Abstract: A vehicle power steering system uses an electric motor to drive a pump at a variable speed to provide power steering fluid at a variable flow for power assist to operator steering efforts. The system has a speed control for the electric motor which derives a command speed signal from a power steering load signal, senses motor speed and controls electric power to the motor in response thereto to vary the speed of the electric motor in the direction of the command speed signal. In a switching region of the power steering fluid pressure signal, the speed control switches between a low speed for standby operation and a higher speed to supply the power steering operation demands. The speed control modifies the switch-point load value in response to the power steering fluid temperature sensor to compensate for temperature dependent losses. Separate switch-points are preferably provided for increasing and decreasing power steering load to provide hysteresis; and both switch-points are preferably compensated.

    Abstract translation: 车辆动力转向系统使用电动机以可变速度驱动泵，以便以可变流动提供动力转向流体，以对操作者转向努力进行动力辅助。 该系统具有用于电动机的速度控制，其从动力转向负载信号导出指令速度信号，感测电动机速度并响应于此控制对电动机的电力，以改变电动机在指令方向上的速度 速度信号。 在动力转向液压信号的切换区域中，速度控制在用于待机操作的低速和较高速度之间切换以提供动力转向操作需求。 速度控制根据动力转向液温度传感器修改开关点负载值，以补偿与温度有关的损耗。 优选地提供分开的切换点用于增加和减少动力转向负载以提供滞后; 并且优选地补偿两个切换点。

    Authenticating devices for RF communications
    16.
    发明授权
    Authenticating devices for RF communications 有权
    认证用于RF通信的设备

    公开(公告)号：US08126398B2

    公开(公告)日：2012-02-28

    申请号：US11923716

    申请日：2007-10-25

    Applicant: Jeffery Torrance ,  Jonathan Kimmitt ,  James Collier

    Inventor： Jeffery Torrance ,  Jonathan Kimmitt ,  James Collier

    IPC: H04B7/00 ,  G10L15/00 ,  G06F7/04

    CPC classification number: G08C17/00 ,  G08C2201/20 ,  G08C2201/61 ,  H04L63/0853 ,  H04W4/18 ,  H04W12/06 ,  H04W88/02

    Abstract: A communications system includes a first and second device capable of transmitting and receiving RF communications; a controller for the first device capable of receiving or transmitting a code via a non-RF communication; a controller for the second device capable of receiving the code via a non-RF communication; and a processor for authenticating the first device for RF communication with the second device using the received code.

    Abstract translation: 通信系统包括能够发送和接收RF通信的第一和第二设备; 用于能够经由非RF通信接收或发送代码的第一设备的控制器; 用于能够经由非RF通信接收代码的第二设备的控制器; 以及处理器，用于使用所接收的代码来认证用于与第二设备的RF通信的第一设备。

    SHARING OF ACCESS TO A STORAGE DEVICE
    17.
    发明申请
    SHARING OF ACCESS TO A STORAGE DEVICE 有权
    共享存储设备

    公开(公告)号：US20110078275A1

    公开(公告)日：2011-03-31

    申请号：US12922488

    申请日：2009-03-13

    Applicant: Chris Lowe ,  Harith Hamed Haboubi ,  James Collier

    Inventor： Chris Lowe ,  Harith Hamed Haboubi ,  James Collier

    IPC: G06F15/167

    CPC classification number: G06F13/1663 ,  Y02D10/14

    Abstract: A method and system for sharing access to a storage device. Two processing devices are connected to a storage device interface. The processing devices are interconnected to allow communication with regard to access to the storage device interface. Access to the storage device interface is controlled by the first and second processing devices exchanging signals. Embodiments of the invention may be a mobile device configured to play audio files from a memory card connected to the mobile device. A communications link may be established to a remote device for the transfer of data between devices.

    Abstract translation: 用于共享对存储设备的访问的方法和系统。 两个处理设备连接到存储设备接口。 处理设备互连以允许关于访问存储设备接口的通信。 存储设备接口的访问由第一和第二处理设备交换信号来控制。 本发明的实施例可以是被配置为从连接到移动设备的存储卡播放音频文件的移动设备。 可以向远程设备建立通信链路，用于在设备之间传送数据。

    Method and system for motor velocity measurement
    20.
    发明授权
    Method and system for motor velocity measurement 有权
    电机速度测量方法与系统

    公开(公告)号：US06791217B2

    公开(公告)日：2004-09-14

    申请号：US10116284

    申请日：2002-04-04

    Applicant: Steven James Collier-Hallman ,  William J Bressette

    Inventor： Steven James Collier-Hallman ,  William J Bressette

    IPC: G01P300

    CPC classification number: G01P3/487 ,  G01D5/145 ,  G01D5/2033 ,  G01D5/24461 ,  G01D5/2448 ,  G01D5/24495 ,  Y10S310/06

    Abstract: A method and system for determining the velocity of a rotating device is described herein. The system includes an apparatus with a set of sense magnets affixed to a rotating shaft of the rotating device and a circuit assembly. The circuit assembly includes a circuit interconnection having a plurality of sense coils and sensors affixed thereto. The circuit assembly is adapted be in proximity to the set of sense magnets on the rotating part. A controller is coupled to the circuit assembly, where the controller executes an adaptive algorithm that determines the velocity of the rotating device. The algorithm is a method of combining a derived velocity with a velocity from the tachometer. The algorithm includes a plurality of functions including: receiving a position signal related to the rotational position of the shaft; determining a derived velocity from the position signal; generating a plurality of tachometer velocity signals; determining a compensated velocity in response to the plurality tachometer velocity signals; and blending the compensated velocity with derived velocity to generate a blended velocity output.

    Abstract translation: 本文描述了用于确定旋转装置的速度的方法和系统。 该系统包括具有固定到旋转装置的旋转轴的一组感测磁体和电路组件的装置。 电路组件包括具有多个感测线圈和固定到其上的传感器的电路互连。 电路组件适于靠近旋转部件上的感测磁体组。 控制器耦合到电路组件，其中控制器执行确定旋转装置的速度的自适应算法。 该算法是将派生速度与转速计的速度相结合的方法。 该算法包括多个功能，包括：接收与轴的旋转位置相关的位置信号; 从所述位置信号确定导出的速度; 产生多个转速计速度信号; 响应于所述多个转速计速度信号确定补偿速度; 并将补偿速度与导出速度混合以产生混合速度输出。

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