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27 条记录 (耗时 0.024 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。

    Assembly for measuring movement of and a torque applied to a shaft
    3.
    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。

    Accessory motor drive power supply system for an electric vehicle
    4.
    发明授权
    Accessory motor drive power supply system for an electric vehicle 有权
    电动汽车附件电机驱动电源系统

    公开(公告)号：US06404150B1

    公开(公告)日：2002-06-11

    申请号：US09604439

    申请日：2000-06-27

    申请人： Thomas Wolfgang Nehl ,  Malakondaiah Naidu ,  Avoki Omekanda ,  Anita B. Rao ,  Lateef A. Kajouke ,  Mark M. Osugi

    发明人： Thomas Wolfgang Nehl ,  Malakondaiah Naidu ,  Avoki Omekanda ,  Anita B. Rao ,  Lateef A. Kajouke ,  Mark M. Osugi

    IPC分类号： H02P768

    CPC分类号： B60L1/00 ,  B60L2210/10 ,  Y02T10/7216

    摘要： An electric vehicle accessory motor drive power supply system (40) that utilizes a single power supply design to provide efficient variable speed motor control to both brushless and brush-type DC motors (42,44). The power supply system includes at least one of each type of motor along with a first DC-DC converter (46) that provides operating power to the brushless motor (42) and a second DC-DC converter (48) that provides operating power to the brush-type motor (44). Both converters (46,48) have a power input (52) connected to the electric vehicle's high voltage bus (50) and each includes a data input (54) for receiving a speed control signal (SC) indicative of desired motor speed, as well as an output (56) for providing a motor drive signal to its associated DC motor (42,44). Each of the converters (46,48) is operable in response to its received speed control signal to convert operating power from the high voltage bus (50) into a lower voltage variable motor drive signal that is provided to its associated motor (42,44) via its output (56). The variable drive signal can be either a variable DC voltage signal or a pulse-width modulated signal. With this arrangement, a single converter design, including a single speed control interface, can be utilized to operate both brush-type and brushless motors. Furthermore, the system permits more efficient operation of the brushless motors since it obviates the need for speed control electronics on the motor itself and therefore eliminates the relatively inefficient use of cascaded PWM stages.

    摘要翻译： 一种电动车辆附件电动机驱动电源系统（40），其利用单个电源设计为无刷和直流电动机（42,44）提供有效的变速电动机控制。 电源系统包括每种类型的电动机中的至少一个以及向无刷电动机（42）提供工作电力的第一DC-DC转换器（46）和向第一DC-DC转换器（48）提供工作电力的第二DC-DC转换器 刷式电动机（44）。 两个转换器（46,48）都具有连接到电动汽车的高压总线（50）的电力输入（52），并且每个转换器包括用于接收指示期望的电动机速度的速度控制信号（SC）的数据输入（54），如 以及用于向其相关联的DC电动机（42,44）提供电动机驱动信号的输出（56）。 每个转换器（46,48）响应于其接收到的速度控制信号而工作，以将来自高压总线（50）的操作功率转换成提供给其相关联的电动机（42,44）的较低电压可变电动机驱动信号 ）通过其输出（56）。 可变驱动信号可以是可变直流电压信号或脉冲宽度调制信号。 通过这种布置，可以使用包括单个速度控制接口的单个​​转换器设计来操作电刷型和无刷电动机。 此外，该系统允许无刷电动机的更有效的操作，因为它消除了对电动机本身上的速度控制电子装置的需要，因此消除了级联PWM级的相对低效的使用。

    Integrating fluxgate for magnetostrictive torque sensors
    7.
    发明授权
    Integrating fluxgate for magnetostrictive torque sensors 失效
    集成磁致伸缩扭矩传感器的磁通门

    公开(公告)号：US06871553B2

    公开(公告)日：2005-03-29

    申请号：US10402620

    申请日：2003-03-28

    申请人： Malakondaiah Naidu ,  Joseph Pierre Heremans ,  Thomas Wolfgang Nehl ,  John R. Smith ,  Brian K Fuller

    发明人： Malakondaiah Naidu ,  Joseph Pierre Heremans ,  Thomas Wolfgang Nehl ,  John R. Smith ,  Brian K Fuller

    IPC分类号： G01L3/02 ,  G01L3/10

    CPC分类号： G01L3/102 ,  G01L3/105

    摘要： A torque sensing apparatus for picking up a magnetic field of a magnetostrictive material disposed on a shaft, the torque sensing apparatus having: a first integrating ring; a second integrating ring; a first fluxgate return strip and a second fluxgate return strip each being connected to the first integrating ring at one end and the second integrating ring at the other end; an excitation coil; and a feedback coil; wherein the first integrating ring and the second integrating ring are configured to be positioned to pick up flux signals along the entire periphery of the ends of the magnetostrictive material.

    摘要翻译： 一种用于拾取设置在轴上的磁致伸缩材料的磁场的转矩传感装置，所述扭矩感测装置具有：第一积分环; 第二整合环; 第一磁通门返回带和第二磁通门返回带，每个第一磁通门返回带在一端连接到第一积分环，在另一端连接到第二积分环; 励磁线圈; 和反馈线圈; 其中所述第一积分环和所述第二积分环被配置为沿着所述磁致伸缩材料的端部的整个周边拾取通量信号。

    Method and apparatus for torque control of a machine
    8.
    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。

    Magnetic arrangement for an analog angle encoder
    10.
    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。