基于RBF的LVDT输出标定研究  

Research on LVDT Output Calibration Based on RBF

作　　者：雷建和[1] 胡廷轩 张栋[1] 宫汝林 

机构地区：[1]青岛理工大学自动化工程学院,山东青岛266520

出　　处：《测控技术》2016年第10期93-96,共4页Measurement & Control Technology

基　　金：山东省高等学校科技计划项目(J14LN26);山东省博士基金(BS2011DX037)

摘　　要：线性可变差分变压器(LVDT)式位移传感器是电感式位移传感器常见的一种结构形式,在设计研发LVDT的过程中需要对其进行输出标定。针对这一问题,以普通型交流非标准线性输出回弹式LVDT为研究对象,通过信号调理电路和单片机测量实验数据,利用径向基神经网络(RBF)为标定算法,对IVDT测量的输入与输出数据进行建模,然后将训练好的模型在Matlab中进行离线仿真,仿真结果表明,仿真数据和实测数据的误差在允许范围之内,本模型可以用在LVDT标定中。Linear variable differential transformer （LVDT） displacement sensor is a kind of common structure form of inductive displacement transducer, the output calibration is needed in the process of design and development of LVDT. In order to solve this problem, a non-standard linear output LVDT is taken as the research object, and the experimental data are obtained by signal conditioning circuit and microcontroller. RBF is used as the calibration algorithm to model the input and output data of LVDT measurement. Then the trained model is off-line simulated in Matlab. The results show that the error botween the simulation data and the measured data is in the allowable range and the model can be used in the calibration of LVDT.

关 键 词：LVDT RBF 标定 信号调理电路 

分 类 号：TN722[电子电信—电路与系统]