-
公开(公告)号：US3997835A
公开(公告)日：1976-12-14
申请号：US521812
申请日：1974-11-07
申请人： Seigo Ando , Takeo Yamada , Katsujiro Watanabe
发明人： Seigo Ando , Takeo Yamada , Katsujiro Watanabe
摘要： In measuring the distance between a measuring sensor and a metallic body, the sensor is comprised by a resonance circuit including a capacitor and a coil, and the sensor is connected to the input of a Q multiplier circuit which is impressed with an AC signal having a predetermined frequency. The non-linear distance-inductance characteristic of the coil is compensated for by adjusting the selectivity of the resonance circuit so that the amplifier included in the Q multiplier circuit produces a linear output. Such compensation is performed by adjusting the gain and/or the amount of positive feedback of the Q multiplier circuit.
摘要翻译： 在测量传感器和金属体之间的距离时，传感器由包括电容器和线圈的谐振电路组成，并且传感器连接到Q乘法电路的输入端，Q乘法器电路被施加于具有 预定频率。 通过调节谐振电路的选择性来补偿线圈的非线性距离 - 电感特性，使得包括在Q乘法器电路中的放大器产生线性输出。 通过调整Q乘法器电路的增益和/或正反馈量来执行这种补偿。
-
132.发明授权Method for removing electrical runout in machine shafts and apparatus for use with the same 失效用于去除机器轴中的电气跳动和与其一起使用的装置的方法
公开(公告)号：US3986380A
公开(公告)日：1976-10-19
申请号：US572174
申请日：1975-04-28
申请人： David H. Biggs
发明人： David H. Biggs
摘要： A method for removing electrical runout in a machine shaft is disclosed. Electrical runout relates to electrical irregularities which can result from non-uniform electrical properties of the materials of the observed surface. A non-contacting eddy current proximity transducer is to be utilized and in which such a non-contacting eddy current proximity transducer is positioned to sense the portion of the shaft from which electrical runout is to be removed. The output of the transducer is sensed to provide an indication of the electrical runout to ascertain where the electrical runout is high and low as the shaft is rotated. The portions of surface of the shaft where the electrical runout is high is cold worked to change the resistivity and permeability of the observed material and bring electrical properties of the worked area in line with adjacent areas to cancel or to remove the electrical runout. In the apparatus, means is provided which performs a peening operation on the shaft to cold work the same.
摘要翻译： 公开了一种用于去除机器轴中的电气跳动的方法。 电跳动涉及可能由观察表面的材料的不均匀电性能导致的电不均匀性。 将使用非接触式涡流接近传感器，其中这种非接触式涡流接近传感器被定位成感测将要去除电跳动的轴的部分。 感测传感器的输出以提供电跳动的指示，以确定当轴旋转时电跳跃高和低的位置。 电气跳动高的轴的表面的部分被冷加工，以改变观察到的材料的电阻率和磁导率，并使加工区域的电气特性与相邻区域一致以取消或去除电跳动。 在该装置中，提供了对轴执行喷丸操作以对其进行冷加工的装置。
-
公开(公告)号：US3756081A
公开(公告)日：1973-09-04
申请号：US3756081D
申请日：1971-05-21
申请人： YOUNG R
发明人： YOUNG R
CPC分类号： G01D5/202
摘要： A transducer for converting mechanical displacement into an electrical signal comprises a length of resistive wire movable in an inductance coil to change its inductance. Preferably the inductance coil is included in an oscillator circuit the frequency of which is compared with another oscillator to provide a frequency difference signal as a digital representation of the mechanical movement. Simple practical examples of its uses are described.
摘要翻译： 用于将机械位移转换为电信号的换能器包括可在电感线圈中移动以改变其电感的电阻线的长度。 优选地，电感线圈包括在振荡器电路中，其频率与另一个振荡器进行比较，以提供作为机械运动的数字表示的频差信号。 描述其用途的简单实用示例。
-
134.发明公开公开(公告)号：US20240061093A1
公开(公告)日：2024-02-22
申请号：US18382364
申请日：2023-10-20
发明人： Yongfeng GAO , Shaoqing XIANG
CPC分类号： G01S7/497 , G01S7/4817 , G01D5/202
摘要： A device and method for measuring an angle of a scanner, and a LiDAR. The device for measuring the angle includes a conductor (11) and an angle measuring circuit (12), wherein the scanner comprises a scanning mirror (10); one side of the scanning mirror (10) includes a reflective surface and the other side thereof includes a mounting surface, and the scanning mirror can pivot around at least one axis; the conductor (11) can be fixed on the mounting surface; the angle measuring circuit (12) includes a resonant system (120) and a sampling unit (121); the resonant system (120) includes an inductor (1201) and a capacitor (1202), the inductor (1201) can be fixedly arranged at a predetermined distance from a stationary position of the conductor (11); and the sampling unit (121) can sample and output an electric signal of the resonant system (120), and can determine a parameter of the resonant system (120) so as to determine a tilt angle of the scanning mirror (10). The aim of measuring the tilt angle of the scanning mirror can be achieved.
-
公开(公告)号：US20230314180A1
公开(公告)日：2023-10-05
申请号：US18048627
申请日：2022-10-21
发明人： Ganesh Shaga
IPC分类号： G01D5/20
CPC分类号： G01D5/202
摘要： Various examples include a target for an inductive angular-position sensor. The target may rotate about a center axis and may include a number of fins respectively including a respective outer-circumferential edge to overlap a respective first arc at least partially defining a first circle centered at the center axis. A respective first central angle of the respective first arc substantially equal to 360° divided by twice a count of the fins. The number of fins may respectively include a respective inner-circumferential edge, positioned closer to the center axis than the respective outer-circumferential edge is to the center axis. The respective inner-circumferential edge may overlap a respective second arc at least partially defining a second circle centered at the center axis. A respective second central angle of the respective second arc substantially equal to 360° divided by the count of the fins. Related devices, systems and methods are also disclosed.
-
公开(公告)号：US11677397B2
公开(公告)日：2023-06-13
申请号：US16660310
申请日：2019-10-22
CPC分类号： H03K17/9618 , G01D5/202 , H01F5/003 , H02K11/28 , H03K17/97 , H03K2017/9706
摘要： A trigger assembly, for use with a power tool having an electric motor, includes a trigger, a conductor coupled for movement with the trigger, and a printed circuit board. The printed circuit board has an inductive sensor thereon responsive to relative movement between the conductor and the inductive sensor caused by movement of the trigger. An output of the inductive sensor is used to activate the electric motor.
-
公开(公告)号：US20190219123A1
公开(公告)日：2019-07-18
申请号：US16306287
申请日：2017-04-21
发明人： Michael John Gill
CPC分类号： F16F9/3292 , F16F9/0218 , F16F9/029 , F16F9/38 , F16F2222/126 , F16F2224/02 , F16F2224/0208 , F16F2230/0047 , F16F2230/08 , F16F2232/08 , G01D5/202
摘要： A telescopic arrangement (10) having a hollow cylinder (12) and a part (14) which is telescopically engaged with the cylinder. The arrangement is provided with at least one coil (22) constituting a first form of pulse-induction device, and at least one target (28) constituting a second form of pulse-induction device, to monitor the position of the said part (14) relative to the cylinder (12). A plurality of devices (22) each of one of the said first and second forms of device are positioned on the outside of the cylinder (12), at different respective positions therealong. At least one (28) of the other of the said first and second forms of device is fixed relative to the said part (14) of the arrangement (10) in a position such that it is moved over the said plurality of devices (22) in succession as the said part (14) is telescopically moved relative to the cylinder (12) of the arrangement (10).
-
138.发明申请公开(公告)号：US20180328758A1
公开(公告)日：2018-11-15
申请号：US15755919
申请日：2016-07-21
发明人： Henri TEBOULLE , Jean-Michel GAUDIN , Paolo MORO
摘要： A device for counting turns of a rotating member (8) rotating about an axis with respect to a housing (100), comprising a wheel (6) made from non-metal material rotatably connected to the rotating member and provided locally with at least one eccentric metal mass (7) leaving a part of the wheel uncovered, at least two coils (1, 2) that are separated from each other and fixedly mounted with respect to the housing facing a portion of the trajectory of the metal mas in such a way that at least all of the coils except one are always responsive to said metal mass and that each belong to an inductive circuit (10.1, 10.2) electrically connected to a counting unit (5). A counter incorporating such a device.
-
公开(公告)号：US20180113004A1
公开(公告)日：2018-04-26
申请号：US15850457
申请日：2017-12-21
申请人： Mitutoyo Corporation
发明人： Ted Staton Cook
IPC分类号： G01D5/20
CPC分类号： G01D5/202 , G01D5/2216
摘要： An electronic position encoder includes a scale comprising first and second pattern tracks including respective signal modulating scale patterns, a detector and a signal processing configuration. The detector includes first-track and second-track field generating coil portions that surround first and second interior areas aligned with the first pattern track and second pattern track, respectively. The first-track and second-track field generating coil portions each include first and second elongated portions extending along the measuring axis direction, connected to end portions extending along a y-axis direction transverse to the measuring axis. The detector includes sensing elements that span across the first and second interior areas along the y-axis direction. A nominal y-axis trace width dimension of the elongated portions is at least 0.1 times a y-axis width of the first and/or second interior areas. In various implementations, a shielded end section may be used to connect the elongated portions.
-
140.发明申请公开(公告)号：US20170292857A1
公开(公告)日：2017-10-12
申请号：US15517344
申请日：2015-09-29
申请人： Robert Bosch GmbH
发明人： Stefan Leidich , Ralf Ameling
IPC分类号： G01D5/20
CPC分类号： G01D5/202 , G01P3/44 , G01R27/2611 , G01R27/267
摘要： In one embodiment, a sensor arrangement for the contactless sensing of angles of rotation on a rotating part includes a disk-shaped target, a coil arrangement, and an evaluation and control unit. The disc-shaped target is coupled to the rotating part and includes at least two metal surfaces that influence the inductances in the flat detection coils due to eddy current effects as a function of the degree of overlap. The disc-shaped target can generate at least one piece of information for ascertaining the instantaneous angle of rotation of the rotating part, in connection with the coil arrangement. The coil arrangement has has three flat detection coils uniformly distributed on the circumference of a circle. The evaluation and control unit can generate essentially sinusoidal evaluation signals which represent the changes in inductance of the detection coils and can evaluate them for calculating the angle of rotation.
-
-
-
-
-
-
-
-
-
搜索结果
357 条记录 (耗时 0.018 秒)
