差动变压器式位移传感器零位电压研究  

Study on Zero-point Remainder Voltage of Differential Transformer Displacement Sensor

作　　者：贾惠霞 王健 张娟 

机构地区：[1]北方捷瑞光电科技有限公司,陕西西安710111 [2]陕西华经微电子股份有限公司,陕西西安710065

出　　处：《仪表技术与传感器》2015年第2期82-84,共3页Instrument Technique and Sensor

摘　　要：差动变压器式位移传感器原理简单,便于实现。但是位移传感器会产生零位电压,同时在信号处理过程中,电路漂移也会引起测量误差。文中主要基于这种传感器的工作原理和信号处理过程,阐述零位电压产生的机理和消除的方法,提高传感器的测量精度,并用MATLAB仿真和实验的方法证明零位电压产生的主要部位,进而说明差动变压器式位移传感器加工时保证磁路对称的重要性。The principle of the differential transformer displacement sensor is very simple, and it is very easy to realize.The measurement errors exit not only because of zero-point remainder voltage of the carrier, but also because of the circuit drift in the process of signal processing.This article was based on the principle and the signal processing of this kind of sensor,and the princi- ple of zero-point remainder voltage and the method of removing it were introduced, thus improving the certainty of measurement.The main part of null voltage was proved through MATLAB simulation and experiment, thus proving the importance of magnetic circuit symmetry in the differential transformer displacement sensor.

关 键 词：差动变压器式位移传感器 零位电压 产生机理 信号处理 仿真 实验 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]