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    SINE WAVE ANALYSIS METHOD AND APPARATUS
    4.
    发明申请
    SINE WAVE ANALYSIS METHOD AND APPARATUS 审中-公开
    正弦波分析方法和装置

    公开(公告)号：US20160139182A1

    公开(公告)日：2016-05-19

    申请号：US14940547

    申请日：2015-11-13

    申请人： Robert J. Pond

    发明人： Robert J. Pond

    IPC分类号： G01R19/04 ,  G01R25/00 ,  G01R23/00

    CPC分类号： G01R19/2509 ,  G01R23/02

    摘要： Provided, is an apparatus and method for sampling or otherwise processing an alternating wave. A sensor senses a value of the alternating wave at a plurality of equally-spaced times during a period of the alternating wave. These equally-spaced times are determined independent of at least one of a frequency and a phase of the alternating wave. A controller determines, independently of the frequency and the phase of the alternating wave, a desired value of the alternating wave pertinent to a predetermined application of the apparatus based on the value of the alternating wave sensed by the sensor.

    摘要翻译： 提供一种用于对交替波进行采样或以其它方式处理的装置和方法。 传感器在交替波的周期期间感测多个等间隔时间的交变波的值。 独立于交变波的频率和相位中的至少一个来确定这些等间隔时间。 基于由传感器感测到的交替波的值，控制器独立于交变波的频率和相位确定与设备的预定应用相关的交替波的期望值。

    Digital sine wave generator and motor controller
    5.
    发明授权
    Digital sine wave generator and motor controller 失效
    数字正弦波发生器和电机控制器

    公开(公告)号：US5495160A

    公开(公告)日：1996-02-27

    申请号：US163279

    申请日：1993-12-06

    申请人： Robert J. Pond

    发明人： Robert J. Pond

    IPC分类号： H02M7/5387 ,  G06F15/46

    CPC分类号： H02M7/53873 ,  H02M2007/53876

    摘要： Digital sinusoidal waves are generated using a method based on an error measuring algorithm used to generate a synthesized circle. X and Y waves are generated step-wise to follow the contour of a reference circle in the x-y plane by computing the mean square error at each step and using the error value to calculate the next values of X and Y. The digital sine waves are converted to three-phase, pulse width modulated signals. Direct current power is inverted to three phase power to operate a motor under the control of the PWM signals. The controller permits control of voltage, voltage-frequency ratio, boost voltage, and acceleration-deceleration.

    摘要翻译： 使用基于用于产生合成圆的误差测量算法的方法产生数字正弦波。 通过计算每个步骤的均方误差并使用误差值计算X和Y的下一个值，逐步生成X和Y波，以遵循xy平面中的参考圆的轮廓。数字正弦波是 转换为三相脉宽调制信号。 在PWM信号的控制下，直流功率被反相到三相电源来操作电机。 控制器允许控制电压，电压 - 频率比，升压电压和加速 - 减速。

    Electric switches for reducing on-state power loss
    6.
    发明授权
    Electric switches for reducing on-state power loss 失效
    用于降低通态功率损耗的电开关

    公开(公告)号：US5943223A

    公开(公告)日：1999-08-24

    申请号：US951174

    申请日：1997-10-15

    申请人： Robert J. Pond

    发明人： Robert J. Pond

    IPC分类号： H01H1/00 ,  H01H9/54 ,  H02M1/00 ,  H02M7/32 ,  H02M7/58 ,  H03K17/00 ,  H03K17/0814 ,  H02M3/335

    CPC分类号： H02M1/00 ,  H02M7/32 ,  H02M7/58 ,  H03K17/08142 ,  H01H1/0036 ,  H01H9/542 ,  H03K2217/0036

    摘要： A power application circuit utilizes microelectromechanical (MEM) switches to reduce power loss in energy conversion equipment. The MEM switches can be integrated on a single substrate with a diode or semiconductor switch. The MEM switches can be included in a single circuit package with another semiconductor device and may include a control circuit which turns each MEM switch on or off. The MEM switch is controlled so that it is opened and closed only when a relatively low voltage drop occurs across the switch. The MEM switch can be utilized in AC to AC converters, DC to AC converters, AC to DC converters, matrix converters, motor controllers, resonant motor controllers, or other power application devices. The MEM switch can also be included in a single package with an IGBT which is optimized for low-switching losses. It can be included in a single package with a diode to reduce conduction loss in power diode bridges.

    摘要翻译： 电力应用电路使用微机电（MEM）开关来减少能量转换设备的功率损耗。 MEM开关可以集成在具有二极管或半导体开关的单个基板上。 MEM开关可以包含在具有另一半导体器件的单个电路封装中，并且可以包括使每个MEM开关接通或断开的控制电路。 MEM开关被控制，使得仅当在开关两端发生相对较低的压降时才能将其开关。 MEM开关可用于交流转换器，直流到交流转换器，交直流转换器，矩阵转换器，电机控制器，谐振电机控制器或其他电源应用设备。 MEM开关也可以包含在具有针对低开关损耗进行优化的IGBT的单个封装中。 它可以包含在具有二极管的单个封装中，以减少功率二极管桥中的导通损耗。

    Magnetoacoustic proximity sensor
    7.
    发明授权
    Magnetoacoustic proximity sensor 失效
    磁声接近传感器

    公开(公告)号：US4709210A

    公开(公告)日：1987-11-24

    申请号：US729658

    申请日：1985-05-02

    申请人： Robert J. Pond

    发明人： Robert J. Pond

    IPC分类号： G01B7/02 ,  H03K17/94 ,  H03K17/95 ,  G01B7/14 ,  G01H5/00

    CPC分类号： H03K17/94 ,  G01B7/023 ,  H03K17/952

    摘要： A new form of proximity sensor is described which enables sensing of magnetic and/or metallic objects over an extended region of space. The time-varying magnetic field necessary for proximity sensing is provided by a strain wave propagating at acoustic velocity in a waveguide composed of magnetized magnetostrictive material. The propagating strain wave carries with it a disturbance in the magnetic field in the region of the waveguide. A single, elongated sensing coil is located in the same plane as the acoustic waveguide and senses changes in the flux passing through the coil when magnetic and/or metallic objects or targets are present near the waveguide. The spatial location of the targets along the length of the proximity sensor can be determined by measuring the time interval from the initial application of the strain wave until the signal corresponding to the target is induced in the sensing coil. Multiple objects can be sensed by measuring the time interval for each signal. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

    摘要翻译： 描述了一种新形式的接近传感器，其能够在扩展的空间区域上感测磁性和/或金属物体。 接近感应所需的时变磁场由在磁化磁致伸缩材料构成的波导中以声速传播的应变波提供。 传播的应变波在波导区域的磁场中携带干扰。 单个细长的感测线圈位于与声波导相同的平面中，并且当磁性和/或金属物体或靶存在于波导附近时，感测通过线圈的通量的变化。 目标沿着接近传感器长度的空间位置可以通过测量从应变波的初始施加到对应于目标的信号在感测线圈中的时间间隔来确定。 可以通过测量每个信号的时间间隔来感测多个对象。 上述摘要仅仅是一般应用的简历，不是所有操作原理或应用的完整讨论，并不被解释为对所要求保护的主题的范围的限制。

    Electronic protection circuit for solid state switches energizing AC loads
    8.
    发明授权
    Electronic protection circuit for solid state switches energizing AC loads 失效
    固态开关的电子保护电路为交流负载供电

    公开(公告)号：US4271448A

    公开(公告)日：1981-06-02

    申请号：US93218

    申请日：1979-11-13

    申请人： Robert J. Pond

    发明人： Robert J. Pond

    IPC分类号： H02H9/02 ,  H03K17/0814

    CPC分类号： H03K17/08144 ,  H02H9/02

    摘要： A two-terminal overcurrent sensing transistor circuit of the fold-back type is inserted in electrical series relationship with an AC load and an associated load-energizing, solid state, semiconductor switch. Under normal operating conditions, the transistor circuit presents a very low impedance to permit load energization when the solid state switch is conducting, and hence has a very low impedance. Upon sensing an overcurrent condition, caused for example by a short circuit across the load, the transistor circuit rapidly switches to and locks into a high impedance circuit protection state to limit current through the series-associated solid state switch. A charged capacitor holds the transistor circuit into its high impedance state subsequent to clearing of the short circuit fault until reset by interrupting the application of power to it. The disclosed protection scheme finds particularly advantageous use in the short circuit protection of AC line-operated proximity switches. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

    摘要翻译： 折叠型的两端子过电流检测晶体管电路与AC负载和相关的负载激励固态半导体开关以电串联的方式插入。 在正常工作条件下，晶体管电路呈现非常低的阻抗，以在固态开关导通时允许负载通电，因此具有非常低的阻抗。 在感测到例如通过负载短路引起的过电流状态时，晶体管电路快速切换到并锁定到高阻抗电路保护状态以限制通过串联相关联的固态开关的电流。 充电的电容器在清除短路故障之后将晶体管电路保持在其高阻抗状态，直到通过中断向其施加电力而复位。 所公开的保护方案在AC线路接近开关的短路保护中特别有利。 上述摘要仅仅是一般应用的简历，不是所有操作原理或应用的完整讨论，并不被解释为对所要求保护的主题的范围的限制。