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5 条记录 (耗时 0.051 秒)

    Switched capacitor motor driver
    2.
    发明授权
    Switched capacitor motor driver 有权
    开关电容电机驱动器

    公开(公告)号：US06566839B2

    公开(公告)日：2003-05-20

    申请号：US09895505

    申请日：2001-06-28

    申请人： Daniel Robert DaSilva ,  John Pretzer ,  Glenn Waehner

    发明人： Daniel Robert DaSilva ,  John Pretzer ,  Glenn Waehner

    IPC分类号： H02P318

    CPC分类号： H02P8/32 ,  H02P8/14

    摘要： The present invention is a method and apparatus that allows the torque of an electric motor to be increased allowing the motor to be operated at higher speeds and at higher torque without raising the supply voltage, thus allowing for a wider dynamic range of speed and torque to be realized. This is accomplished by connecting one or more capacitors in series with each motor winding, and selectively activating the capacitors at higher speeds where the frequency of the motor resonates with that of the capacitor(s). Switching a capacitor into the circuit with the motor in a particular frequency range allows higher currents to flow through the motor windings resulting in higher torque.

    摘要翻译： 本发明是一种允许电动机转矩增加的方法和装置，其允许电动机以更高的速度和更高的转矩工作，而不会提高电源电压，从而允许更大的速度和转矩的动态范围 实现。 这通过将一个或多个电容器与每个电动机绕组串联连接并且以较高速度选择性地激活电容器来实现，其中电动机的频率与电容器的频率谐振。 将电容器切换到具有特定频率范围的电机的电路中，允许更高的电流流过电机绕组，从而产生更高的转矩。

    Security identification system
    3.
    发明申请
    Security identification system 有权
    安全识别系统

    公开(公告)号：US20070133844A1

    公开(公告)日：2007-06-14

    申请号：US11598547

    申请日：2006-11-13

    申请人： Glenn Waehner ,  Peter Kalocsai

    发明人： Glenn Waehner ,  Peter Kalocsai

    IPC分类号： G06K9/00

    CPC分类号： G06K9/2036 ,  G06K9/00221

    摘要： This is a security and identification system designed to obtain improved images for use by real-time facial recognition and identification systems for screening individuals passing through secure entry or checkpoints such as airport passenger terminals, government offices, and other secure locations. The system detects the presence of a subject at the checkpoint, interactively instructs the subject to stop and move into position for proper identification and recognition, analyzes the facial features of the subject as (s)he passes through the checkpoint, and compares the features of the subject with those in a database. The system then generates different signals depending upon whether or not the subject is recognized. In one aspect of the invention, different methods and apparatus are provided for compensating for low ambient light so as to improve the quality of the facial image of the subject that is obtained.

    摘要翻译： 这是一种安全和识别系统，旨在获得改进的图像，以便通过实时面部识别和识别系统来筛选穿过安全入境的人员或检查站，例如机场客运终端，政府机关和其他安全位置。 该系统检测对象在检查点的存在，交互地指示对象停止并移动到适当的识别和识别位置，分析他通过检查点的被检者的面部特征，并比较 主题与数据库中的那些。 然后系统根据是否识别对象产生不同的信号。 在本发明的一个方面，提供了不同的方法和装置来补偿低环境光，从而提高所获得的被摄体的面部图像的质量。

    Method and apparatus for improved motor control through current/velocity correction
    5.
    发明授权
    Method and apparatus for improved motor control through current/velocity correction 有权
    通过电流/速度校正改善电机控制的方法和装置

    公开(公告)号：US06670783B2

    公开(公告)日：2003-12-30

    申请号：US09998816

    申请日：2001-10-31

    申请人： Glenn Waehner ,  William Eric Hamilton

    发明人： Glenn Waehner ,  William Eric Hamilton

    IPC分类号： H02P800

    CPC分类号： H02P8/00 ,  H02P2205/03

    摘要： The present invention provides a method and apparatus, including a processor and software incorporating a table that contains sets of pre-determined correction values that are used to supply different amounts of power to an electric stepper motor when the motor is operating at different speeds. Use of the correction values in the table allows power to be supplied to the motor in differing amounts that are approximately the same as the power actually required by the motor at different motor speeds or ranges of speeds.

    摘要翻译： 本发明提供了一种方法和装置，包括处理器和软件，其包括表，该表包含用于在电动机以不同速度操作时向电步进电机提供不同量的功率的预定校正值的集合。 使用表中的校正值，可以以不同的电动机速度或速度范围内与电动机实际需要的功率大致相同的量向电动机供电。