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24 条记录 (耗时 0.056 秒)

    Switched reluctance motor control with partially disabled operation capability
    2.
    发明授权
    Switched reluctance motor control with partially disabled operation capability 有权
    开关磁阻电机控制具有部分禁用的运行能力

    公开(公告)号：US07095206B2

    公开(公告)日：2006-08-22

    申请号：US10854026

    申请日：2004-05-26

    申请人： Bruno P. B. Lequesne ,  Suresh Gopalakrishnan ,  Avoki M. Omekanda ,  Thomas Wolfgang Nehl

    发明人： Bruno P. B. Lequesne ,  Suresh Gopalakrishnan ,  Avoki M. Omekanda ,  Thomas Wolfgang Nehl

    IPC分类号： H02P23/00 ,  H02P25/00 ,  H02H3/00

    CPC分类号： H02H7/0833 ,  G01R31/343 ,  H02P25/092 ,  H02P29/032

    摘要： Certain circuit faults in a phase of a multi-pole, switched reluctance, rotary electrical machine are detected; and the machine is selectively operated with a detected circuit fault when the nature of the fault permits continued operation of the phase and the operation of the phase is desirable. The fault may be one of certain short or open circuits in which at least one of the two current controlling electronic switches is operable to control phase current within predetermined limits. In the continued operation when a fault is detected, (1) the phase current is switched off earlier than it would be in the absence of the fault and/or (2) the maximum phase current is reduced compared with that permitted in the absence of the fault; and either or both of these modifications may be a function of motor speed. If the circuit fault adversely affects current control by an electronic switch normally controlling current level, another electronic switch is substituted for current control.

    摘要翻译： 检测到多极，开关磁阻，旋转电机的相位中的某些电路故障; 并且当故障的性质允许相的继续操作并且期望的操作时，机器被选择性地操作具有检测到的电路故障。 故障可以是某些短路或开路中的一个，其中两个电流控制电子开关中的至少一个可操作以在预定限度内控制相电流。 在检测到故障时的继续操作中，（1）相位电流比在没有故障时提前关闭和/或（2）与没有故障时允许的相电流相比，最大相电流减小 错误; 并且这些修改中的一个或两个可以是电机速度的函数。 如果电路故障不利地影响通常控制电流电平的电子开关的电流控制，则另一电子开关代替电流控制。

    Magnetic arrangement for an analog angle encoder
    3.
    发明授权
    Magnetic arrangement for an analog angle encoder 失效
    用于模拟角度编码器的磁排列

    公开(公告)号：US06489761B1

    公开(公告)日：2002-12-03

    申请号：US09678209

    申请日：2000-09-05

    申请人： Thaddeus Schroeder ,  Bruno Patrice Bernard ,  Avoki M. Omekanda ,  Thomas Wolfgang Nehl

    发明人： Thaddeus Schroeder ,  Bruno Patrice Bernard ,  Avoki M. Omekanda ,  Thomas Wolfgang Nehl

    IPC分类号： G01B730

    CPC分类号： G01D5/145

    摘要： An analog angle encoder includes a non-magnetic stator which is cup-shaped, having a central post carrying at least one magnetosensitive device, and further including a rotor in the form of a ring captured by the stator, the rotor carrying at least one permanent magnet, wherein the rotor is rotatable relative to the stator. As the rotor rotates relative to the stator, the angle of the incident magnetic field changes relative to the magnetosensitive device, thereby causing the output from the device to vary sinusoidally with angular position. It is preferred to use magnetic configurations other than simple six sided magnets in order to achieve a more uniform magnetic field at the magnetosensitive device, as for example by utilizing cylindrical magnets, arcuate (concave faced) magnets, flat ferromagnetic layer pole pieces, arcuate (concave faced) ferromagnetic layer pole pieces, and ferromagnetic return paths.

    摘要翻译： 模拟角度编码器包括杯形的非磁性定子，其具有承载至少一个磁感应装置的中心柱，并且还包括由定子捕获的环形形式的转子，转子承载至少一个永磁体 磁体，其中转子可相对于定子旋转。 当转子相对于定子旋转时，入射磁场的角度相对于磁感应装置改变，从而使装置的输出以角度位置正弦变化。 优选使用除了简单的六面磁体之外的磁性构造，以便在磁感应装置处获得更均匀的磁场，例如通过利用圆柱形磁体，弓形（凹面）磁体，扁平铁磁层极片，弓形（ 凹面）铁磁层极片和铁磁返回路径。

    Compact rotary magnetic position sensor having a sinusoidally varying output
    4.
    发明授权
    Compact rotary magnetic position sensor having a sinusoidally varying output 失效
    紧凑型旋转磁位置传感器具有正弦变化的输出

    公开(公告)号：US06720763B1

    公开(公告)日：2004-04-13

    申请号：US09655035

    申请日：2000-09-05

    申请人： Thomas Wolfgang Nehl ,  Thaddeus Schroeder ,  Nady Boules ,  Rassem Ragheb Henry

    发明人： Thomas Wolfgang Nehl ,  Thaddeus Schroeder ,  Nady Boules ,  Rassem Ragheb Henry

    IPC分类号： G01B730

    CPC分类号： G01D5/145

    摘要： A rotary position sensor featuring a magnetized rotor which produces a magnetic flux density that varies sinusoidally with respect to the angular position of the rotor, which may be either a selectively magnetized ring or disk. The magnetic flux density produced by the rotor is measured by a sensor that responds in a linear fashion to the magnitude of the radial component of the magnetic flux density. Typical embodiments would use magnetic flux density sensors, as for example either linear Hall sensors or magnetoresistive type sensors. The measured magnetic flux densities are then used as in a traditional resolver to compute position or used to directly generate control signals to operate, for example, a motor.

    摘要翻译： 具有磁化转子的旋转位置传感器，其产生相对于转子的角位置正弦变化的磁通密度，其可以是选择性磁化的环或盘。 由转子产生的磁通密度由传感器测量，该传感器以线性方式响应于磁通密度的径向分量的大小。 典型的实施例将使用磁通密度传感器，例如线性霍尔传感器或磁阻型传感器。 然后，如传统的分解器那样使用测量的磁通密度来计算位置或用于直接产生控制信号以操作例如电动机。

    Method and apparatus for torque control of a machine
    5.
    发明授权
    Method and apparatus for torque control of a machine 有权
    一种用于机器转矩控制的方法和装置

    公开(公告)号：US06566829B1

    公开(公告)日：2003-05-20

    申请号：US09656903

    申请日：2000-09-07

    申请人： Malakondaiah Naidu ,  Rassem Ragheb Henry ,  Thomas Wolfgang Nehl

    发明人： Malakondaiah Naidu ,  Rassem Ragheb Henry ,  Thomas Wolfgang Nehl

    IPC分类号： H02P700

    CPC分类号： H02P6/28

    摘要： An exemplary embodiment of the invention is a method for torque control of a PM synchronous machine. The method includes obtaining a torque command signal and a machine speed and determining an operating mode in response to the torque command signal and the machine speed. The operating mode includes a first operating mode and a second operating mode. In the first operating mode, a stator phase voltage magnitude is computed and an angle between the stator phase voltage and a stator phase back emf is determined in response to the stator phase voltage magnitude. In the second operating mode, the stator phase voltage is set to a predetermined magnitude and the angle between the stator phase voltage and the stator phase back emf is determined in response to the predetermined magnitude.

    摘要翻译： 本发明的示例性实施例是一种用于PM同步机的转矩控制的方法。 该方法包括获得扭矩指令信号和机器速度，并且响应于转矩指令信号和机器速度来确定操作模式。 操作模式包括第一操作模式和第二操作模式。 在第一操作模式中，计算定子相位电压幅度，并且响应于定子相电压幅值来确定定子相电压和定子相位电动势之间的角度。 在第二操作模式中，定子相位电压被设定为预定的大小，并且响应于预定的大小来确定定子相位电压和定子相位电动势之间的角度。

    Assembly for measuring movement of and a torque applied to a shaft
    7.
    发明授权
    Assembly for measuring movement of and a torque applied to a shaft 失效
    用于测量施加到轴的运动和扭矩的组件

    公开(公告)号：US07024946B2

    公开(公告)日：2006-04-11

    申请号：US10763499

    申请日：2004-01-23

    申请人： Thomas Wolfgang Nehl ,  Thomas Hubert Van Steenkiste ,  John R. Smith ,  Brian K Fuller ,  Avoki M. Omekanda ,  Donald T. Morelli ,  Joseph V. Mantese

    发明人： Thomas Wolfgang Nehl ,  Thomas Hubert Van Steenkiste ,  John R. Smith ,  Brian K Fuller ,  Avoki M. Omekanda ,  Donald T. Morelli ,  Joseph V. Mantese

    IPC分类号： G01L3/10

    CPC分类号： G01L3/102 ,  G01L3/103

    摘要： The subject invention provides an assembly for measuring movement of and a torque applied to a shaft extending between first and second ends and being hollow, specifically for measuring rotation and twisting of the shaft. A permanent magnet is disposed within the shaft for producing a parallel magnetic field emanating radially from the shaft. A sensor mechanism is positioned adjacent the shaft to detect the magnetic flux produced in response to the shaft being moved. The sensor mechanism includes a magnetostrictive (MR) material disposed annularly about the shaft and extends between first and second edges. A flux collector extends beyond the first and second edges of the magnetostrictive material to direct the magnetic flux through a Hall sensor to detect an axial component of the magnetic flux in response to twisting. A positional ring extends annularly around and spaced from the shaft and a positional sensor is disposed between the positional ring and the shaft for measuring a radial component of the magnetic flux in response to rotating.

    摘要翻译： 本发明提供了一种用于测量施加到在第一和第二端之间延伸并且是中空的轴的转矩和扭矩的组件，具体地用于测量轴的旋转和扭转。 永磁体设置在轴内，用于产生从轴径向发出的平行磁场。 传感器机构定位在轴附近，以检测响应于轴被移动产生的磁通量。 传感器机构包括围绕轴设置成环状并在第一和第二边缘之间延伸的磁致伸缩（MR）材料。 磁通收集器延伸超出磁致伸缩材料的第一和第二边缘，以引导磁通量通过霍尔传感器，以响应于扭转来检测磁通量的轴向分量。 位置环围绕轴线环绕并且间隔开，并且位置传感器设置在位置环和轴之间，用于响应于旋转来测量磁通量的径向分量。

    Extended speed range operation of permanent magnet brushless machines using optimal phase angle control in the voltage mode operation
    8.
    发明授权
    Extended speed range operation of permanent magnet brushless machines using optimal phase angle control in the voltage mode operation 有权
    永磁无刷电机的扩展速度范围运行在电压模式运行中采用最佳相位角控制

    公开(公告)号：US06373211B1

    公开(公告)日：2002-04-16

    申请号：US09664178

    申请日：2000-09-18

    申请人： Rassem Ragheb Henry ,  Thomas Wolfgang Nehl ,  Nady Boules ,  Malakondaiah Naidu

    发明人： Rassem Ragheb Henry ,  Thomas Wolfgang Nehl ,  Nady Boules ,  Malakondaiah Naidu

    IPC分类号： H02P701

    CPC分类号： H02P6/10 ,  B62D5/046 ,  H02P6/06 ,  H02P6/08 ,  H02P6/17 ,  H02P21/22

    摘要： A voltage mode control method and apparatus for extending speed range operation from a sinusoidally excited permanent magnet motor is described. The method includes a determination of a maximum value from a first set of parameters with each parameter having a known maximum value as well as a reading of a second set of parameters. A computation of a first derived angle using the first set of parameters and the second set of parameters is then performed. A computation of amplitude of phase voltage and a second derived angle using the first derived angle follows. A resultant output comprising a set of derived command voltages for controlling a power circuit is created whereby the power circuit can achieve required torque levels with lower currents for power switches.

    摘要翻译： 描述了用于从正弦激励永磁电动机延伸速度范围操作的电压模式控制方法和装置。 该方法包括从第一组参数确定最大值，每个参数具有已知的最大值以及第二组参数的读数。 然后执行使用第一组参数和第二组参数的第一导出角的计算。 以下是使用第一导出角度的相位电压的振幅和第二导出角度的计算。 产生包括用于控制电源电路的一组导出的指令电压的结果输出，由此电力电路可以实现用于功率开关的较低电流所需的转矩水平。

    Universal magnetostrictive force sensor
    9.
    发明授权
    Universal magnetostrictive force sensor 失效
    通用磁致伸缩力传感器

    公开(公告)号：US06993983B2

    公开(公告)日：2006-02-07

    申请号：US10313660

    申请日：2002-12-06

    申请人： Bruno Patrice Bernard Lequesne ,  Donald T. Morelli ,  Thaddeus Schroeder ,  Thomas Wolfgang Nehl ,  Thomas Allen Baudendistel

    发明人： Bruno Patrice Bernard Lequesne ,  Donald T. Morelli ,  Thaddeus Schroeder ,  Thomas Wolfgang Nehl ,  Thomas Allen Baudendistel

    IPC分类号： G01L1/12

    CPC分类号： G01L1/127 ,  G01L1/125

    摘要： A magnetostrictive force sensor universally usable in any environment with similar signals unaffected by the surrounding material. To this end, a sensor comprising a shaft of magnetostrictive material with an inductance coil wound around the shaft is provided with a magnetic shell enclosing the coil only or both the coil and the shaft. Upon application of the magnetic field, the resultant flow of magnetic flux is confined to a path through the shaft and the magnetic shell. By confining the magnetic flux path, the dependency of the sensor signal on the surrounding material and environment is essentially eliminated.

    摘要翻译： 一种磁致伸缩力传感器，可在任何环境中使用，具有不受周围材料影响的相似信号。 为此，包括具有卷绕在轴上的电感线圈的磁致伸缩材料轴的传感器设置有只包围线圈或线圈和轴两者的磁性壳。 在施加磁场时，所产生的磁通流被限制在通过轴和磁性壳的路径上。 通过限制磁通路径，基本上消除了传感器信号对周围材料和环境的依赖性。