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ANALYSIS AND COMPENSATION CIRCUIT FOR AN INDUCTIVE DISPLACEMENT SENSOR

机译:电感式位移传感器的分析和补偿电路

摘要

The invention relates to a circuit arrangement for analysis and compensation of the signals fo an inductive displacement sensor, comprising a first operating amplifier (OP1), a second operating amplifier (OP2) and a coil having a coil inductance (L1) and a coil resistance (Rcul) for a displacement measurement, wired in parallel with the output of the second operating amplifier (OP2) and the first input of the second operating amplifier (OP2) and connected to a capacitance (C1) in series with the coil inductance (L1) and coil resistance (Rcu1) to form an RLC series tuned circuit. In order to improve the accuracy of a measured resonance frequency, the circuit arrangement can be extended with a second coil with a second coil inductance (L2) and a second coil resistance (Rcu2) for a temperature compensation, by connecting a first of the ends of the coil winding thereof to a second end of the coil winding of the first coil and a second of the ends of the coil winding thereof to the second input of the first operating amplifier (OP1).
机译:本发明涉及一种用于分析和补偿感应式位移传感器的信号的电路装置,包括第一运算放大器(OP1),第二运算放大器(OP2)和具有线圈电感(L1)和线圈电阻的线圈(Rcul)用于位移测量,与第二运算放大器(OP2)的输出和第二运算放大器(OP2)的第一输入并联,并与与线圈电感(L1)串联的电容(C1)连接)和线圈电阻(Rcu1)组成一个RLC串联调谐电路。为了提高测得的谐振频率的精度,可以通过连接两个端部中的第一端来扩展电路装置,该第二线圈具有用于温度补偿的第二线圈电感(L2)和第二线圈电阻(Rcu2)它的线圈绕组到第一线圈的线圈绕组的第二端,并且其线圈绕组的第二端到第一运算放大器(OP1)的第二输入端。

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