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公开(公告)号：US09677913B2
公开(公告)日：2017-06-13
申请号：US14697836
申请日：2015-04-28
发明人： Shiju Wang , Timothy R. Jackson
CPC分类号： G01D5/20 , G01D5/202 , G01D5/2291
摘要： Inductive displacement sensors and methods of using them may be useful in a variety of contexts. For example, systems for precisely measuring linear or angular motion may use inductive displacement sensors to measure changes in position. An apparatus, such as a sensor, can include a primary inductor. The apparatus can also include a first secondary inductor that is field-coupled to the primary inductor. The apparatus can further include a second secondary inductor that is field-coupled to the primary inductor. The first secondary inductor and the second secondary inductor can be configured as coordinated inductors to detect motion of a coupler. The coordinated inductors can be configured to provide a reference signal and a measurement signal, wherein the reference signal has a constant amplitude across a range of motion of the coupler.
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公开(公告)号：US09638763B2
公开(公告)日：2017-05-02
申请号：US14585455
申请日：2014-12-30
发明人： George P. Reitsma
CPC分类号： G01R33/0023 , G01D5/202 , G01R27/2611 , H03K17/9542
摘要： A resonant impedance sensing system includes a negative impedance control loop incorporating the resonator as a loop filter, and including a class D negative impedance stage implemented with a class D comparator, and a loop control stage implemented with an output comparator clocked (D_clk) by the class D comparator. The class D comparator receives resonator oscillation voltage, and generates a class D switching output synchronized with resonator oscillation frequency. A discrete current source (such as a current DAC) drives the resonator through an H-bridge switched by the class D switching output, so that the time average of the discrete drive current corresponds to resonator oscillation amplitude. Based on resonator oscillation amplitude, the output comparator provides a discrete loop control signal to the discrete current source, driving the resonator with a negative impedance that balances resonant impedance, thereby maintaining constant resonator oscillation amplitude corresponding to steady-state oscillation.
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公开(公告)号：US09479134B2
公开(公告)日：2016-10-25
申请号：US14139701
申请日：2013-12-23
摘要： A position detecting system detects and responds to the movement of a target through a sensing domain area of a plane. The movement causes the amount of the target that lies within a sensing domain area to change. A portion of the target always lies within at least one of the sensing domain areas of the plane.
摘要翻译： 位置检测系统通过平面的感测域区域来检测和响应目标的移动。 移动导致位于感测区域内的目标的量改变。 目标的一部分始终位于平面的感测区域区域中的至少一个中。
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公开(公告)号：US20160265945A1
公开(公告)日：2016-09-15
申请号：US14837375
申请日：2015-08-27
申请人： Showa Corporation
发明人： Yosuke MURAKAMI
摘要： A stroke sensor system includes a vehicle-body-side member, a wheel-side member, and a movement-amount deriving section. The movement-amount deriving section derives a movement amount of relative movement between the vehicle-body-side member and the wheel-side member. At least a part of one of the vehicle-body-side member and the wheel-side member is a conductor, and the other is provided with a coil. The movement-amount deriving section includes an even number of capacitors and an even number of exciting sections. The even number of capacitors are electrically coupled to the coil and configure an LC resonance section. The even number of exciting sections are for exciting an oscillation waveform output by the LC resonance section. The even number of capacitors and the even number of exciting sections are divided into equal numbers to configure a balanced circuit. The movement-amount deriving section derives the movement amount based on the oscillation waveform.
摘要翻译： 行程传感器系统包括车体侧构件，车轮侧构件和移动量导出部。 移动量导出部导出车身侧构件与车轮侧构件之间的相对移动的移动量。 车体侧构件和车轮侧构件中的一个的至少一部分是导体，另一个设置有线圈。 移动量导出部分包括偶数个电容器和偶数个激励部分。 偶数个电容器电耦合到线圈并配置LC谐振部分。 激励部分的偶数激励由LC谐振部分输出的振荡波形。 将偶数个电容器和偶数个励磁部分分成相等的数量来配置平衡电路。 移动量导出部基于振荡波形导出移动量。
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公开(公告)号：US09377328B2
公开(公告)日：2016-06-28
申请号：US13357002
申请日：2012-01-24
申请人： Jan F. Herbst
发明人： Jan F. Herbst
摘要： A sensor includes a magnetic piece with a magnetic array, a conductive coil and ferromagnetic object. The magnetic array provides a spatially modulated magnetic field that is concentrated in the near-field. A processor calculates the ferromagnetic object's speed based on voltage induced in the conductive coil. The ferromagnetic object's movement through the magnetic field causes a change in the magnetic flux, and the rate of change is proportional to the induced voltage.
摘要翻译： 传感器包括具有磁性阵列的磁性片，导电线圈和铁磁体。 磁阵列提供集中在近场的空间调制磁场。 处理器基于导电线圈中感应的电压来计算铁磁体的速度。 铁磁物体通过磁场的移动导致磁通量的变化，并且变化率与感应电压成比例。
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公开(公告)号：US20160069662A1
公开(公告)日：2016-03-10
申请号：US14801810
申请日：2015-07-16
发明人： Joyce Mullenix , George Reitsma
CPC分类号： G01D5/22 , G01D5/202 , G01D5/2225
摘要： A position detecting system detects and responds to the movement of a target through a sensing domain area of a plane. The movement causes the amount of the target that lies within a first sensing domain area of a first sensor to change. A second sensor detects a height from the plane to a sensor for enhancing accuracy of measurements from the first sensor.
摘要翻译： 位置检测系统通过平面的感测域区域来检测和响应目标的移动。 移动导致位于第一传感器的第一感测区域内的目标的量改变。 第二传感器检测从平面到传感器的高度，以增强来自第一传感器的测量精度。
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公开(公告)号：US20150025772A1
公开(公告)日：2015-01-22
申请号：US14321324
申请日：2014-07-01
CPC分类号： G01B7/003 , F02D28/00 , G01D5/2013 , G01D5/202 , G01D5/2452
摘要： A position indicator device (10) comprising a first array (12) of uniformly spaced-apart pulse induction affecting targets fixed in position relative to a second array of uniformly spaced-apart pulse induction affecting targets (14). The spacing between the centres of adjacent targets of the first array (12) differs from that of the second (14). The device further comprises a first set (18) of pulse-induction coils comprising a plurality of such coils and a second set (20) of pulse-induction coils comprising a plurality of such coils. The coils of the first set (18) are fixed relative to those of the second set (20). Those of the first set (18) are located adjacent to the first array (12) of targets. Those of the second set (20) are located adjacent to the second array (14) of targets. The targets (the said first and second arrays together) and the coils (the said first and second sets together) are movable relative to one another. The device further comprises indicator circuitry (22) connected to the first and second sets (18 and 20) of pulse induction coils to provide a signal dependent upon the outputs thereof indicative of the position of the coils relative to the targets.Also a position indicator device (10) comprising at least one pulse-induction affecting target (12), at least one pulse-induction coil (18), and pulse-induction indicator circuitry (22) connected to the said at least one pulse-induction coil (18) to provide a signal dependent upon the output thereof indicative of the position of the said at least one pulse-induction coil (18) relative to the said at least one pulse-induction affecting target (12). Metallic glass or amorphous metal is arranged to shield the said at least one pulse-induction affecting target (12) and/or the said at least one pulse-induction coil (18) from stray signals.
摘要翻译： 一种位置指示器装置（10），包括均匀间隔开的脉冲感应的第一阵列（12），其影响相对于影响目标（14）的均匀间隔的脉冲感应的第二阵列固定在适当位置的目标。 第一阵列（12）的相邻目标的中心之间的间隔与第二阵列（12）的中心之间的间隔不同。 该装置还包括包括多个这样的线圈的脉冲感应线圈的第一组（18）和包括多个这种线圈的脉冲感应线圈的第二组（20）。 第一组（18）的线圈相对于第二组（20）的线圈是固定的。 第一组（18）的那些位于与目标的第一阵列（12）相邻的位置。 第二组（20）的那些位于靶的第二阵列（14）附近。 目标（所述第一和第二阵列在一起）和线圈（所述第一和第二组在一起）可相对于彼此移动。 该装置还包括连接到脉冲感应线圈的第一组和第二组（18和20）的指示器电路（22），以提供取决于其指示线圈相对于靶的位置的输出的信号。 还有一种位置指示器装置（10），包括至少一个脉冲感应影响目标（12），至少一个脉冲感应线圈（18）和连接到所述至少一个脉冲感应线圈（18）的脉冲感应指示器电路（22） 感应线圈（18），以根据其输出提供指示所述至少一个脉冲感应线圈（18）相对于所述至少一个脉冲感应影响目标（12）的位置的信号。 金属玻璃或非晶金属被布置成屏蔽所述至少一个脉冲感应影响目标（12）和/或所述至少一个脉冲感应线圈（18）与杂散信号。
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78.发明申请公开(公告)号：US20140252899A1
公开(公告)日：2014-09-11
申请号：US14355649
申请日：2012-11-01
申请人： ETH ZURICH
发明人： Andreas Looser
CPC分类号： H02K7/09 , F16C32/0402 , F16C32/0448 , G01B7/14 , G01D5/202 , G01P3/49 , H02K11/225
摘要： A rotating electrical machine includes a stator, a rotor and at least one active magnetic bearing including a bearing winding, which is an air-gap winding, and includes at least a first phase winding and a second phase winding. A measurement arrangement measures the radial displacement of the rotor by injecting a displacement measurement injected signal into at least one section of at least one of the bearing windings of one of the magnetic bearings, and capturing at least one displacement measurement signal wherein this displacement measurement signal depends on the rotor displacement in a radial direction relative to the stator, this dependency being due to eddy currents in the rotor induced by the displacement measurement injected signal.
摘要翻译： 旋转电机包括定子，转子和至少一个主动磁轴承，其包括作为气隙绕组的轴承绕组，并且至少包括第一相绕组和第二相绕组。 测量装置通过将位移测量注入信号注入到一个磁性轴承的至少一个轴承绕组的至少一个部分中并且捕获至少一个位移测量信号来测量转子的径向位移，其中该位移测量信号 取决于相对于定子在径向上的转子位移，这种依赖性是由位移测量注入信号引起的转子中的涡流引起的。
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公开(公告)号：US20140020459A1
公开(公告)日：2014-01-23
申请号：US13979612
申请日：2012-01-10
IPC分类号： F03D11/00
CPC分类号： F03D17/00 , F05B2260/83 , F05B2260/84 , F05B2270/327 , F05B2270/809 , G01D5/202 , Y02E10/722
摘要： The invention relates to a test tool for testing an overspeed protection system of a wind turbine. The system includes a sensor for sensing a first physical signal having a physical nature and representing a speed of rotation of a rotor of the wind turbine, and for providing a corresponding output signal; means for receiving the output signal from the sensor and for determining, based on the output signal, if the speed of rotation exceeds a threshold of speed of rotation; and means for initiating, if the speed of rotation exceeds the threshold of speed of rotation, an action reducing the speed of rotation. The test tool provides a second physical signal of the same physical nature as the first physical signal, is suitable for supplying the second physical signal to the sensor so as to simulate the rotation of the wind turbine.
摘要翻译： 本发明涉及一种用于测试风力涡轮机超速保护系统的测试工具。 该系统包括用于感测具有物理性质并且表示风力涡轮机的转子的旋转速度并且用于提供对应的输出信号的第一物理信号的传感器; 用于从所述传感器接收所述输出信号并且用于基于所述输出信号确定所述旋转速度是否超过旋转速度阈值的装置; 以及用于启动，如果旋转速度超过旋转速度的阈值，则降低旋转速度的动作。 测试工具提供与第一物理信号相同物理性质的第二物理信号，适于将第二物理信号提供给传感器，以便模拟风力涡轮机的旋转。
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公开(公告)号：US08629676B2
公开(公告)日：2014-01-14
申请号：US12681525
申请日：2008-09-10
申请人： Rudolf Kronawitter , Willi Wimmer
发明人： Rudolf Kronawitter , Willi Wimmer
IPC分类号： G01B7/30
CPC分类号： G01D5/202 , G01D5/2053
摘要： Disclosed is a position sensor, in particular a rotor position sensor, comprising a base. A track that is provided with a conducting coating is formed within the surface of the base relevant for evaluating signals. Since the track is formed within the base, the desired position-dependent modulation of the eddy current behavior is obtained by design measures, resulting in low manufacturing tolerance and reduced production costs.
摘要翻译： 公开了一种位置传感器，特别是包括基座的转子位置传感器。 在与基准相关的表面中形成具有导电涂层的轨道，用于评估信号。 由于轨道形成在基座内，因此通过设计措施获得涡流行为所需的位置相关调制，从而导致制造公差低，生产成本降低。
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