公开(公告)号：US3390386A

公开(公告)日：1968-06-25

申请号：US43456765

申请日：1965-02-23

Applicant: LEEDS & NORTHRUP CO

Inventor： CRANCH EDWARD J ,  HICKOX RICHARD M

IPC: G01L1/08

CPC classification number: G01L1/086

公开(公告)号：US2593339A

公开(公告)日：1952-04-15

申请号：US55412844

申请日：1944-09-14

Applicant: MANNING MAXWELL & MOORE INC

Inventor： OSTERMANN HANS J ,  WILKENS ARNO G K ,  BRYAN CHARLES B

IPC: G01F1/28 ,  G01L1/08 ,  G01L9/00 ,  G01L9/10 ,  G01L11/00 ,  G01R17/08

CPC classification number: G01L1/086 ,  G01F1/28 ,  G01L9/0029 ,  G01L9/10 ,  G01L11/008 ,  G01R17/08

公开(公告)号：US11644370B2

公开(公告)日：2023-05-09

申请号：US16569047

申请日：2019-09-12

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Emmanuel Marchais ,  Kathryn Rose Holland ,  Carl Lennart Ståhl ,  Eric Lindemann

IPC: G01L1/08 ,  G01L1/10 ,  G01L1/14 ,  G01L1/18 ,  G01L5/105 ,  G06F3/01 ,  H02M1/44

CPC classification number: G01L1/086 ,  G01L1/10 ,  G01L1/14 ,  G01L1/183 ,  G01L5/105 ,  G06F3/016 ,  H02M1/44

Abstract: A system for performing force sensing with an electromagnetic load may include a signal generator configured to generate a signal for driving an electromagnetic load and a processing subsystem configured to monitor at least one operating parameter of the electromagnetic load and determine a force applied to the electromagnetic load based on a variation of the at least one operating parameter.

公开(公告)号：US20140102218A1

公开(公告)日：2014-04-17

申请号：US14118179

申请日：2012-05-11

Applicant: Dirk Scheibner ,  Arno Steckenborn

Inventor： Dirk Scheibner ,  Arno Steckenborn

IPC: G01L1/08

CPC classification number: G01L1/086 ,  G01G3/12 ,  G01G3/1416

Abstract: A force transducer, in particular a weighing cell, includes a spring body, which deforms under the action of a force or load to be measured, and a sensor that includes two separate sensor parts mounted at different locations of the spring body and that generates a sensor signal which is dependent on the relative position of the sensor parts with respect to each other. In order to improve the adaptation of the sensor to the spring body, one of the sensor parts is attached to the spring body with interposition of an electromechanical actuator and a control device is present, which controls the actuator dependent on the sensor signal in the direction of a reduction in the positional difference of the sensor parts.

Abstract translation: 力传感器，特别是称重传感器，包括在待测量的力或负载的作用下变形的弹簧体，以及包括安装在弹簧体的不同位置处的两个分开的传感器部件的传感器， 传感器信号取决于传感器部件相对于彼此的相对位置。 为了改善传感器对弹簧体的适应性，其中一个传感器部件通过插入机电致动器而连接到弹簧体，并且存在控制装置，该控制装置根据传感器信号在方向上控制致动器 降低传感器部件的位置差异。

公开(公告)号：US20130233077A1

公开(公告)日：2013-09-12

申请号：US13415526

申请日：2012-03-08

Applicant: SHENG JUI CHEN ,  HSIAO HSI PAN

Inventor： SHENG JUI CHEN ,  HSIAO HSI PAN

IPC: G01P15/125 ,  H02N1/00 ,  G01L1/14

CPC classification number: G01P15/131 ,  B81B3/0021 ,  B81B2201/0221 ,  B81B2203/0109 ,  B81B2203/0163 ,  B81B2203/053 ,  G01L1/086 ,  G01P15/125 ,  G01P15/18

Abstract: An electrostatic force generator is disclosed. The electrostatic force generator includes an RF AC voltage source, a capacitive module, a resonant capacitive-inductive bridge (CIB) module, a lock-in amplifier module, and a proportional-integral-derivative (PID) controller. The resonant capacitive-inductive bridge module converts the differential capacitance to a differential signal. The differential signal from the resonant capacitive-inductive bridge module is demodulated at the RF excitation frequency by the lock-in amplifier module. The PID controller receives the output signal from the lock-in amplifier module and generates two audio frequency AC signals to generate a compensation electrostatic force and maintain the capacitance balance inside the capacitive module.

Abstract translation: 公开了静电力发生器。 静电力发生器包括RF AC电压源，电容性模块，谐振电容感应桥（CIB）模块，锁定放大器模块和比例积分微分（PID）控制器。 谐振电容电感桥模块将差分电容转换为差分信号。 来自谐振电感电感桥模块的差分信号通过锁相放大器模块以RF激励频率进行解调。 PID控制器从锁定放大器模块接收输出信号，并产生两个音频AC信号，产生补偿静电力，并保持电容模块内的电容平衡。

公开(公告)号：US20060075836A1

公开(公告)日：2006-04-13

申请号：US10964067

申请日：2004-10-13

Applicant: Anis Zribi ,  Luana Emiliana Iorio ,  Daniel Joseph Lewis

Inventor： Anis Zribi ,  Luana Emiliana Iorio ,  Daniel Joseph Lewis

IPC: G01D5/12 ,  G01L9/12 ,  G01R3/00

CPC classification number: G01L9/007 ,  G01L1/086 ,  G01L5/00 ,  G01L9/0008 ,  G01L11/008 ,  Y10T29/49007

Abstract: A sensor for measuring an input signal is provided. The sensor includes a transducer having a soft magnetic material. The transducer may be disposed on a spring element. The soft magnetic material produces a change in impedance when the transducer is stimulated by the input signal. The impedance change is representative of a magnitude of the input signal. The sensor further includes a circuit coupled to the transducer, which is operable to measure the impedance change to determine the magnitude of the input signal. A method of operating the sensor is also provided.

Abstract translation: 提供了用于测量输入信号的传感器。 传感器包括具有软磁材料的换能器。 换能器可以设置在弹簧元件上。 当传感器被输入信号刺激时，软磁材料产生阻抗变化。 阻抗变化表示输入信号的大小。 传感器还包括耦合到换能器的电路，其可操作以测量阻抗变化以确定输入信号的幅度。 还提供了一种操作传感器的方法。

公开(公告)号：US5085070A

公开(公告)日：1992-02-04

申请号：US476865

申请日：1990-02-07

Applicant: Gabriel L. Miller ,  Eric R. Wagner

Inventor： Gabriel L. Miller ,  Eric R. Wagner

IPC: G01Q60/00 ,  G01B5/28 ,  G01L1/08

CPC classification number: G01Q20/04 ,  B82Y35/00 ,  G01L1/086 ,  Y10S977/863

Abstract: A force balancing method and apparatus detects small changes in force or pressure. An LC tuned circuit having a capacitor with at least one movable plate senses force or pressure changes. Deviations in the phase of the response of the tuned circuit are compared to the phase of a driving reference oscillator to generate an error signal. The error signal is used to control the oscillator to increase or decrease its output amplitude for driving the tuned circuit. As a result the electrostatic force across the capacitor plates tends to change in such a way as to precisely balance the effect of external force or pressure changes. The system therefore operates in a force-balance mode and in such a way as to provide a high sensitivity together with a precisely controlled stiffness. This system is particularly applicable to high sensitivity microphones, micro-topography, and atomic force microscopy.

Abstract translation: 力平衡方法和装置检测力或压力的小变化。 具有至少一个可移动板的电容器的LC调谐电路感测力或压力变化。 将调谐电路的响应相位的偏差与驱动参考振荡器的相位进行比较以产生误差信号。 误差信号用于控制振荡器增加或减小其输出振幅以驱动调谐电路。 结果，跨过电容器板的静电力倾向于改变以精确平衡外力或压力变化的影响。 因此，该系统以力平衡模式运行，并且以这样的方式提供高灵敏度以及精确控制的刚度。 该系统特别适用于高灵敏度麦克风，微观形貌和原子力显微镜。

公开(公告)号：US4494022A

公开(公告)日：1985-01-15

申请号：US592583

申请日：1984-03-23

Applicant: Toshio Kawara ,  Yoshihumi Shibahara

Inventor： Toshio Kawara ,  Yoshihumi Shibahara

IPC: G01G7/02 ,  G01G7/04 ,  G01G23/48 ,  G01L1/08 ,  H01F7/18 ,  H02K41/00 ,  G01G3/14

CPC classification number: G01G7/02 ,  G01L1/086

Abstract: An electromagnetic force-transducer comprising a magnetic circuit and an electromagnetic coil kept movable in the static field provided by said magnetic circuit. The electromagnetic coil consists of two coaxial parallel windings wound on a common frame with a distance kept between the both. The magnetic circuit comprises an inner magnetic path and an outer magnetic path with a cylindrical clearance left therebetween. In the upper and the lower part of the clearance there are provided with an upper magnetic gap and a lower magnetic gap, respectively. The magnetic field in the upper gap and that in the lower gap are directed oppositely to each other. The coil frame is kept movable vertically in the cylindrical clearance, positioning one of the two windings in the upper magnetic gap and the other in the lower magnetic gap. The two windings are current-supplied in the directions opposite to each other to produce their respective electromagnetic forces in the same direction. Thus, the magnetic fields produced by the two windings are cancelled by each other, so that the resultant magnetic field by the entire electromagnetic coil does not affect the fields provided at the magnetic gaps by the magnetic circuit.

Abstract translation: 一种电磁力传感器，包括磁路和电磁线圈，其可在由所述磁路提供的静态中保持移动。 电磁线圈由缠绕在公共框架上的两个同轴并联绕组组成，两者之间保持一定距离。 磁路包括内部磁路和外部磁路，其间留有圆柱形间隙。 在间隙的上部和下部分别设置有上磁隙和下磁隙。 上间隙中的磁场和下间隙中的磁场相互指向。 线圈框架保持在圆柱形间隙中垂直移动，将两个绕组中的一个定位在上磁隙中，另一个在下磁隙中。 两个绕组在彼此相反的方向上电流供应，以在相同的方向上产生它们各自的电磁力。 因此，由两个绕组产生的磁场被彼此抵消，使得由整个电磁线圈产生的磁场不会影响由磁路在磁隙处提供的磁场。

公开(公告)号：US4182187A

公开(公告)日：1980-01-08

申请号：US899607

申请日：1978-04-24

Applicant: Richard A. Hanson

Inventor： Richard A. Hanson

IPC: G01D5/242 ,  G01L1/08 ,  G01P15/13 ,  G01P15/08

CPC classification number: G01L1/086 ,  G01P2015/0828

Abstract: In order to reduce bias errors resulting from mounting of a force restoring coil assembly element of a force balancing transducer, the force coil assembly is suspended by means of one or more hinges from a force sensing movable member, which includes position pick-off means, that in turn is connected by hinging means to a support member. The effects of strain may further be reduced by locating the first hinges essentially along the axis of the centroid of the pick-off means.

Abstract translation: 为了减少由力平衡换能器的力恢复线圈组件元件的安装引起的偏移误差，力线圈组件通过一个或多个铰链悬挂在力传感可移动构件上，力传感可移动构件包括位置传感装置， 这又通过铰接装置连接到支撑构件。 通过将第一铰链基本上沿着拾取装置的重心的轴线定位，可以进一步减小应变的影响。

公开(公告)号：US4085811A

公开(公告)日：1978-04-25

申请号：US711368

申请日：1976-08-03

Applicant: Knothe, Erich ,  Christoph Berg ,  Eberhard Stadler

Inventor： Knothe, Erich ,  Christoph Berg ,  Eberhard Stadler

IPC: G01G7/04 ,  G01G21/24 ,  G01L1/08 ,  G01G21/10 ,  G01G7/00

CPC classification number: G01G7/04 ,  G01L1/086 ,  Y10S177/09

Abstract: A beamless dynamometer or weighing device comprising a coil movable in theorking gap of a fixed magnet, the coil and magnet forming part of an electromagnetic compensation circuit for the dynamometer or device, and an arrangement for guiding movement of the coil within the working gap comprising an air bearing formed of a fixed guiding cylinder and an air-mounted slidable sleeve connected to the coil; preferably two coils are provided, each connected to a separate slidable sleeve, one sleeve being disposed inside the cylinder and the other sleeve outside the cylinder with the cylinder being formed of an annular jacket suppliable with compressed air which, in use, vents into the gap between the sleeves and cylinder, one sleeve being arranged to be acted upon by the force or mass to be measured and the other sleeve carrying a reference mass.

Abstract translation: 一种无梁测力计或称重装置，包括可在固定磁体的工作间隙中移动的线圈，形成用于测力计或装置的电磁补偿电路的一部分的线圈和磁体，以及用于引导线圈在工作间隙内的运动的装置，包括 由固定的引导筒和连接到线圈的空气安装的可滑动套筒形成的空气轴承; 优选地，设置两个线圈，每个线圈连接到单独的可滑动套筒，一个套筒设置在气缸内部，另一个套筒设置在气缸外部，气缸由可用压缩空气供给的环形外壳形成， 在套筒和圆柱体之间，一个套筒被布置成被待测量的力或质量作用，另一个套筒承载参考质量。