-
公开(公告)号：US06489761B1
公开(公告)日：2002-12-03
申请号：US09678209
申请日：2000-09-05
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。
-
公开(公告)号：US06992480B2
公开(公告)日：2006-01-31
申请号：US10682474
申请日：2003-10-09
申请人： Thaddeus Schroeder , Bruno P. B. Lequesne , Avoki M. Omekanda , Thomas Wolfgang Nehl , Rassem Ragheb Henry
发明人： Thaddeus Schroeder , Bruno P. B. Lequesne , Avoki M. Omekanda , Thomas Wolfgang Nehl , Rassem Ragheb Henry
IPC分类号： G01B7/14
CPC分类号： G01D5/24404
摘要： A magnetic sensor provides an output voltage range having first and second linear slopes. Proper selection of magnetic sensor dimensions enables changes in magnetic flux density upon the passage of at least one tooth and one slot of a target wheel past the magnetic sensor to be represented as a linear magnetic sensor output comprised of at least one linear range whereby linear interpolation of position is possible with appropriate signal processing algorithms.
摘要翻译： 磁传感器提供具有第一和第二线性斜率的输出电压范围。 正确选择磁传感器尺寸使得能够在目标轮的至少一个齿和一个槽通过磁性传感器通过之后磁通密度的变化被表示为包括至少一个线性范围的线性磁传感器输出，从而线性插值 的位置是可能的与适当的信号处理算法。
-
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
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。
-
4.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
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。
-
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
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。
-
公开(公告)号：US06498451B1
公开(公告)日：2002-12-24
申请号：US09656116
申请日：2000-09-06
申请人： Nady Boules , Rassem Ragheb Henry , Chandra Sekhar Namuduri , Thomas Wolfgang Nehl , Bruno Patrice Bernard , Shaotang Chen
发明人： Nady Boules , Rassem Ragheb Henry , Chandra Sekhar Namuduri , Thomas Wolfgang Nehl , Bruno Patrice Bernard , Shaotang Chen
IPC分类号： G05B116
CPC分类号： B62D5/0403 , H02K7/116 , H02K29/03 , H02K29/08 , H02P6/10 , H02P2209/07
摘要： Disclosed is an electric motor system with reduced torque ripple comprising a sinusoidally magnetized permanent magnet, a sinusoidal inverter, a higher resolution position sensor, a composite iron stator yoke, a composite reinforced plastic rotor core and shaft; and a high gear ratio gear reduction box. The novel combination of magnet, inverter, sensor, plastic rotor core and shaft and high gear ratio gear box substantially reduces the torque ripple on the shaft of said motor system.
摘要翻译： 公开了一种具有减小的转矩波动的电动机系统，包括正弦磁化永磁体，正弦逆变器，更高分辨率位置传感器，复合铁定子磁轭，复合增强塑料转子芯和轴; 和高齿轮减速箱。 磁铁，变频器，传感器，塑料转子铁芯，轴和高速齿轮箱的新颖组合大大减少了所述电机系统的轴上的扭矩波动。
-
7.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
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。
-
8.发明申请Magnetorheological fluid-based device having a magnetorheological piston assembly 失效具有磁流变活塞组件的磁流变液体装置公开(公告)号：US20090188763A1
公开(公告)日：2009-07-30
申请号：US12011663
申请日：2008-01-29
申请人： Thomas Wolfgang Nehl , Alexander A. Alexandridis , Robert T. Foister , William C. Kruckemeyer , Fang Deng
发明人： Thomas Wolfgang Nehl , Alexander A. Alexandridis , Robert T. Foister , William C. Kruckemeyer , Fang Deng
IPC分类号： F16F9/53
摘要： A magnetorheological (MR) fluid-based device including an MR piston assembly. The MR piston assembly includes a ferromagnetic MR piston core and an electric coil. The MR piston core has a central longitudinal axis and has an outer circumferential surface substantially coaxially aligned with the central longitudinal axis. The electric coil is positioned in the MR piston core and is substantially coaxially aligned with the central longitudinal axis. A portion, or at least a portion, of the electric coil is buried in the MR piston core under the outer circumferential surface.
摘要翻译： 包括MR活塞组件的磁流变（MR）基于流体的装置。 MR活塞组件包括铁磁MR活塞芯和电线圈。 MR活塞芯具有中心纵向轴线并且具有与中心纵向轴线大致同轴对准的外圆周表面。 电线圈定位在MR活塞芯中并且与中心纵向轴线基本上同轴对准。 电线圈的一部分或至少一部分被埋在MR活塞芯下的外周面下。
-
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
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。
-
公开(公告)号：US06566829B1
公开(公告)日：2003-05-20
申请号：US09656903
申请日：2000-09-07
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。
-
-
-
-
-
-
-
-
-
搜索结果
24 条记录 (耗时 0.028 秒)
