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    Servo-controlled pendular micro-sensor
    23.
    发明授权
    Servo-controlled pendular micro-sensor 失效
    伺服控制的蝶形微传感器

    公开(公告)号：US5440939A

    公开(公告)日：1995-08-15

    申请号：US043387

    申请日：1993-04-06

    Applicant: Herve Barny ,  Henri Fima ,  Michel Torregrosa

    Inventor： Herve Barny ,  Henri Fima ,  Michel Torregrosa

    IPC: G01D3/06 ,  G01L1/08 ,  G01L11/00 ,  G01P15/13 ,  G01L1/00

    CPC classification number: G01L11/008 ,  G01D3/066 ,  G01L1/086 ,  G01P15/131

    Abstract: An electrostatically servo-controlled pendular micro-sensor includes a pendular element disposed so as to respond to a force representative of a physical quantity to be measured. To avoid the drifts affecting the stability of the micro-sensor, generated by the existence of unstable parasitic voltages that impair the voltages provided by a system servo-controlling the pendular element, the electrostatic forces generated to draw back the pendular element through servo-control voltages have a zero mean value. The control voltages are periodic voltages or series of electric signals of equal durations, each having, preferably, a zero mean value.

    Abstract translation: 静电伺服控制的圆柱形微传感器包括摆动元件，其被设置为响应于代表要测量的物理量的力。 为了避免影响微传感器的稳定性的漂移，由于存在不稳定的寄生电压而产生的损害由伺服控制摆式元件的系统所提供的电压，所产生的静电力通过伺服控制来拉回摆式元件 电压具有零平均值。 控制电压是周期性电压或相等持续时间的一系列电信号，每个优选地具有零平均值。

    Force measuring instrument
    24.
    发明授权
    Force measuring instrument 失效
    力测量仪

    公开(公告)号：US5419204A

    公开(公告)日：1995-05-30

    申请号：US217736

    申请日：1994-03-25

    Applicant: Toshiyuki Yamaguchi ,  Akira Komoto

    Inventor： Toshiyuki Yamaguchi ,  Akira Komoto

    IPC: G01G7/04 ,  G01G23/37 ,  G01L1/08 ,  G01L11/00

    CPC classification number: G01L1/086 ,  G01L11/008

    Abstract: A force measuring instrument for determining the strength of an applied force by measuring the strength of an electromagnetic force developed so as to counterbalance the applied force, the instrument including a force coil, a displacement sensor for detecting any displacement occurring on a scale balance, an analog arithmetic unit for performing PD operation of analog detecting signals sent by the displacement sensor, a pulse converter for converting the analog signal into a signal having a frequency depending upon the magnitude of the analog signal, an up/down counter for counting up or down pulse signals from the pulse converter depending upon the polarity of the analog signal, a D/A (digital-to-analog) converter for converting the number of counts by the up/down counter into an analog signal, and wherein the sum of the output of the D/A converter and the output of the analog arithmetic unit is fed back to the force coil, thereby ensuring that the counts by the counter alone are used to determine the measurements.

    Abstract translation: 一种力测量仪器，用于通过测量产生的电磁力的强度来确定施加的力的强度，所述电磁力抵抗所施加的力，所述仪器包括力线圈，用于检测在刻度平衡上发生的任何位移的位移传感器， 用于对由位移传感器发送的模拟检测信号执行PD操作的模拟运算单元，用于将模拟信号转换为具有取决于模拟信号幅度的频率的信号的脉冲转换器，用于向上或向下计数的上/下计数器 取决于模拟信号的极性来自脉冲转换器的脉冲信号; D / A（数/模）转换器，用于将上/下计数器的计数数转换为模拟信号，其中， D / A转换器的输出和模拟运算器的输出被反馈到力线圈，从而确保仅使用计数器的计数 以确定测量。

    Differential reluctance motion detector
    25.
    发明授权
    Differential reluctance motion detector 失效
    差动磁阻检测器

    公开(公告)号：US4083237A

    公开(公告)日：1978-04-11

    申请号：US770776

    申请日：1977-02-22

    Applicant: Peter S. Levesque

    Inventor： Peter S. Levesque

    IPC: G01D5/22 ,  G01L1/08 ,  G01L5/00

    CPC classification number: G01D5/2266 ,  G01L1/086

    Abstract: A displacement detector yielding an electrical output signal that is linearly proportional to the extent of input motion. The input motion to be monitored is applied to the shiftable armature of a differential reluctance transducer constituted by a pair of transformers, each having a primary, a main secondary and an auxiliary secondary. Fed to the primaries is a high-frequency drive voltage generated by an oscillator whose amplitude is regulated by a feedback loop in which a feedback voltage taken from the auxiliary secondaries is compared with a reference voltage to provide a control voltage that so regulates the drive voltage oscillator as to cancel out the effect of temperature on the output signal derived from the main secondaries.

    Abstract translation: 产生与输入运动程度成线性比例的电输出信号的位移检测器。 要监控的输入运动被应用于由一对变压器构成的差分磁阻换能器的可移动电枢，每个变压器具有初级，主级和辅助级。 馈送到原色的是由振荡器产生的高频驱动电压，其振幅由反馈回路调节，其中从辅助辅助线路获取的反馈电压与参考电压进行比较，以提供调节驱动电压的控制电压 振荡器来消除温度对从主二次导出的输出信号的影响。

    Electromagnetically compensated balance or dynamometer
    26.
    发明授权
    Electromagnetically compensated balance or dynamometer 失效
    电磁补偿平衡或测力计

    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。

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