交流差动变压器式位移传感器数字调理方法  

Digital Demodulate Method of Differential Transformer Displacement Transducer

作　　者：李飞[1] 张勇[1] 陈慧琴[1] 

机构地区：[1]上海飞机设计研究院飞控系统设计研究部,上海200436

出　　处：《仪表技术与传感器》2011年第1期84-85,100,共3页Instrument Technique and Sensor

摘　　要：分析了差动变压器式位移传感器的工作原理,讨论了传统模式的模拟调理电路特点,结合实际应用需求,提出了一种基于多功能数据采集板卡和数字解调算法的差动变压器式位移传感器信号数字调理方法,从理论上论证了该数字解调算法,并且设计了一套试验验证系统,针对试验用LVDT(Linear Variable Differential Transformer)传感器,从静态、动态2种工作方式进行解调,验证结果表明,该方法能够满足试验要求,达到了预期的结果。The theory of the differential transformer displacement transducer was studied,and the characteristic of the traditional mode analog signal conditioner circuit was discussed.Considering the practical application,a novel digital signal conditioner method was presented,which was based on the multifunction data acquisition board and the digital demodulation algorithm.In theory,this digital demodulation algorithm is feasible.A test and validation system which contains a LVDT sensor is designed,both static and dynamic test shows that this method is practicable.

关 键 词：差动变压器式位移传感器 信号调理 多功能采集板卡 数字解调算法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]