公开(公告)号：US4004458A

公开(公告)日：1977-01-25

申请号：US664416

申请日：1976-03-05

Applicant: Erich Knothe ,  Franz Josef Melcher ,  Christoph Berg

Inventor： Erich Knothe ,  Franz Josef Melcher ,  Christoph Berg

IPC: G01G7/04 ,  G01L1/08 ,  G01L1/00

CPC classification number: G01G7/04 ,  G01L1/086

Abstract: A balance or dynamometer which comprises a coil in the work gap of an eleomagnet having a core provided with discrete groups of turns, the number of ampere turns in the groups of turns corresponding to the sequence or code values of a preselector code, the coil and electromagnet being disturbed from a predetermined position relative to each other under the influence of a force; such disturbance being recorded by a position indicator connected to the input of a forward/backward counter; means for arranging that the number registered in the counter at any one time connects an associated number of groups of turns to a constant current source connected to the coil; the coil and electromagnet returning to said predetermined position when the counter has connected an appropriate number of groups of turns to the constant current source to compensate for the disturbing force.

Abstract translation: 一种天平或测力计，其包括在具有分立匝数的铁芯的电磁体的工作间隙中的线圈，所述匝数的匝数与预选器代码的序列或代码值相对应，线圈和 电磁铁在力的作用下相对于彼此从预定位置扰乱; 这种干扰由连接到前向/后向计数器的输入的位置指示器记录; 用于布置在任一时刻在计数器中登记的号码将相关数量的匝数连接到连接到线圈的恒流源的装置; 当计数器已经将适当数量的匝数连接到恒流源以补偿干扰力时，线圈和电磁体返回到所述预定位置。

公开(公告)号：US3510858A

公开(公告)日：1970-05-05

申请号：US3510858D

申请日：1967-09-08

Applicant: FOXBORO CO

Inventor： FLANAGAN ALLAN L

IPC: G01L1/08 ,  G01L11/00 ,  G05F1/14 ,  G08C25/00

CPC classification number: G01L1/086 ,  G01L11/008

公开(公告)号：US3237449A

公开(公告)日：1966-03-01

申请号：US21988662

申请日：1962-08-28

Applicant: RALPH BRANDT

Inventor： RALPH BRANDT

IPC: G01L1/08 ,  G01L13/02

CPC classification number: G01L1/086 ,  G01L13/02

公开(公告)号：US3209586A

公开(公告)日：1965-10-05

申请号：US8047361

申请日：1961-01-03

Applicant: TAKESHI TOHYAMA

Inventor： TAKESHI TOHYAMA

IPC: G01L1/08 ,  G01L9/00 ,  G01R17/08

CPC classification number: G01R17/08 ,  G01L1/086 ,  G01L9/0026

公开(公告)号：US20180164164A1

公开(公告)日：2018-06-14

申请号：US15104095

申请日：2015-05-05

Applicant: SOUTHEAST UNIVERSITY

Inventor： Weihua Li ,  Lei Wang ,  Lu Zhang ,  Zaifa Zhou

IPC: G01L1/08 ,  H01L21/66 ,  G01L5/00

CPC classification number: G01L1/086 ,  G01L1/00 ,  G01L5/0047 ,  H01L22/34

Abstract: A thin film material residual testing structure comprises two groups of structures. The first group of structures comprises an electrostatic driven polysilicon cantilever beam, an asymmetrical cross beam made of thin film material to be tested and having an alignment structure, and a double-end fixed support beam made of the thin film material to be tested. The second group of structures is similar to the structure of the first group with the fixed support beam removed. A residual stress testing method includes separating the loading drive part of force from a residual stress testing structure made of the thin film material to be tested, designing the bending deflection of a control testing structure according to geometrical parameters, extracting the force applied on the residual stress testing structure and utilizing force and deflection to calculate the residual stress of the thin film material to be tested.

公开(公告)号：US09645029B2

公开(公告)日：2017-05-09

申请号：US14246244

申请日：2014-04-07

Applicant: lnfineon Technologies AG

Inventor： Dirk Hammerschmidt

IPC: G01L9/00 ,  B81B3/00 ,  G01L1/14 ,  G01L1/08

CPC classification number: G01L9/0072 ,  B81B3/0059 ,  G01L1/086 ,  G01L1/144

Abstract: A pressure sensor system comprises a force feedback loop. The force feedback loop is configured to receive a measured pressure sensor signal and generate a feedback signal based on the measured pressure and an electrostatic force. The electrostatic force is generated based on the feedback signal and combined with the measured force keeping the resultant sensor signal stable.

公开(公告)号：US08800371B2

公开(公告)日：2014-08-12

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: G01P15/18 ,  G01P15/13 ,  G01P15/125

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：US4417632A

公开(公告)日：1983-11-29

申请号：US285086

申请日：1981-07-13

Applicant: Peter Lohberg

Inventor： Peter Lohberg

IPC: G01G1/29 ,  G01G7/04 ,  G01L1/08 ,  G01G7/00 ,  G01G1/26

CPC classification number: G01L1/086 ,  G01G7/04

Abstract: For the automatic weighing of a beam balance with electromagnetic force compensation, substitution control weights and digital recording are used. An indicator signals the position of balance beam to a microcomputer. The load compensation is carried out with a limited number of variable electromagnetic compensation forces of constant amplitude, which are produced by means of a corresponding number of discrete constant currents. The currents are graded according to decreasing powers of a numerical system of a suitable basis; as a rule, just like decimally organized figures according to units and powers of ten of these units. Starting out from upper to lower decades, a count is made in each decade as to how many compensation units are needed in order to overcompensate the load. For this purpose, a decision is made merely in the case of every compensation step--without determining precisely the rest position of the balance beam--as to whether the load applied is larger or smaller than the compensation force. Whenever the indicator signals an overcompensation, then the preceding counting step is regarded as the weighing result of this decade. Numerical correction values are assigned to each compensation step of each decade. The weighing results develops from the sum of the weighing results of all decades and the sum of correction values which had been assigned to the evaluated compensation steps of each decade.

Abstract translation: PCT No.PCT / EP80 / 00132 Sec。 371日期1981年7月13日 102（e）日期1981年7月13日PCT文件1980年11月14日PCT公布。 出版物WO81 / 01463 日期为1981年5月28日。对于用电磁力补偿自动称量光束平衡，使用替代控制权重和数字记录。 指示器将平衡梁的位置指示给微型计算机。 负载补偿用有限数量的恒定幅度的可变电磁补偿力进行，这些可变电磁补偿力是通过相应数量的离散恒定电流产生的。 电流根据适当基础的数值系统的功率递减分级; 一般来说，就像十几个单位的单位和权力的十进制数字一样。 从上到下几十年，每十年计算一次，为了过载补偿需要多少补偿单位。 为此，仅在每个补偿步骤的情况下作出决定，而不是精确地确定平衡梁的静止位置 - 关于施加的载荷是否大于或小于补偿力。 每当指示器发出过补偿信号时，上述计数步骤被认为是本十年的称重结果。 数值校正值分配给每个十年的每个补偿步骤。 称重结果来自于所有数十年的称重结果和已经分配给每十年评估的补偿步骤的校正值的总和。

公开(公告)号：US4345482A

公开(公告)日：1982-08-24

申请号：US94097

申请日：1979-11-14

Applicant: Morgan Adolfsson ,  Torgny Brogardh

Inventor： Morgan Adolfsson ,  Torgny Brogardh

IPC: G01B17/04 ,  G01D5/26 ,  G01D5/58 ,  G01H9/00 ,  G01K1/02 ,  G01L1/08 ,  G01L1/10 ,  G01L9/00 ,  G01P15/097 ,  G01P15/10

CPC classification number: G01P15/097 ,  G01B17/04 ,  G01D5/268 ,  G01D5/58 ,  G01H9/006 ,  G01K1/024 ,  G01L1/086 ,  G01L1/103 ,  G01L9/0017 ,  G01L9/0077

Abstract: The invention relates to a fiber optical device for measuring physical magnitudes such as force, elongation, pressure, acceleration, temperature, etc., comprising a transducer unit and an electronic unit, in which the quantity to be measured is supplied to the transducer unit to affect the resonance frequency of an oscillating body included in the tansducer unit by changing the dimensions, mass, density, modulus of elasticity and/or mechanical stress of the body. A property of the body oscillation, such as frequency, phase position and/or amplitude, is used as a value of the quantity to be measured. The oscillations of the body are detected optically by means of a fiber optical position/movement detector.

Abstract translation: 本发明涉及一种用于测量诸如力，伸长率，压力，加速度，温度等物理量值的光纤装置，其包括换能器单元和电子单元，其中待测量的量被提供给换能器单元 通过改变身体的尺寸，质量，密度，弹性模量和/或机械应力来影响包括在调味剂单元中的振动体的共振频率。 使用身体振动的特性，例如频率，相位位置和/或振幅，作为待测量的值。 通过光纤位置/移动检测器光学检测身体的振荡。

公开(公告)号：US4282470A

公开(公告)日：1981-08-04

申请号：US34353

申请日：1979-04-30

Applicant: Christopher I. Reynolds

Inventor： Christopher I. Reynolds

IPC: G01C19/28 ,  G01L1/08 ,  G01P15/13 ,  B64C17/02

CPC classification number: G01P15/132 ,  G01C19/28 ,  G01L1/086

Abstract: A closed loop control system for maintaining a force transducer assembly in a balanced position is disclosed. The control system has a feedback loop control circuit for providing a force rebalance signal at one of a plurality of predetermined discrete amplitude values during each of a plurality of successive equal duration time intervals. The signal has a constant amplitude during each interval. The control circuit further provides a respective digital representation for each amplitude value of the rebalance signal for each of the successive time intervals. Thereby, a precise determination of the value of the time-force product can be generated with the concomitant determination of the forces acting upon the force responsive transducer. The control system is particularly useful for non-linear transducers, such as square law devices where the time-force product is difficult to determine with continuously variable amplitude values.

Abstract translation: 公开了一种用于将力传感器组件保持在平衡位置的闭环控制系统。 控制系统具有反馈回路控制电路，用于在多个连续相等持续时间间隔的每一个期间，以多个预定的离散振幅值之一提供力重新平衡信号。 信号在每个间隔期间具有恒定的幅度。 控制电路还为连续的每个时间间隔的重新平衡信号的每个振幅值提供相应的数字表示。 因此，通过伴随确定作用在力响应换能器上的力，可以产生对时间力产品的值的精确确定。 控制系统对于非线性换能器尤其有用，例如平方律装置，其中难以用连续可变的振幅值确定时间力产品。