中国计量大学学报2018，Vol.29Issue(4)：373-377,423,6.DOI:10.3969/j.issn.2096-2835.2018.04.005
基于LVDT的在线测量系统设计
Online measurement system design based on LVDT
摘要
Abstract
Linear variable differential transformers (LVDT) use the primary coil excitation voltage as the phase reference to calculate output and will result in some problems such as weak signal anti-interference ability, distortion of data, cumbersome software compensation, heavy workload and so on.A LVDT sensor was proposed to measure the difference between the secondary signal difference and the sum value of the output.As an online measurement circuit of the working principle, it not only solved the above-mentioned defects but also made the data measurement more accurate.It also developed a WiFi serial port instead in replacement of a lead transmission.A network database was established for product measurement, which was convenient for traceability.The experimental results showed that the system was not only stable but also the relative error was reduced by 9.7％, which satisfied the design requirements in practical use and verified the effectiveness of the method.关键词
线性可变差动变压器式/差分信号/在线测量/信号调理Key words
LVDT/differential signal/online measurement/signal conditioning分类
信息技术与安全科学引用本文复制引用
屠乾磊,王学影,郑永军..基于LVDT的在线测量系统设计[J].中国计量大学学报,2018,29(4):373-377,423,6.基金项目
国家自然科学基金项目(No.51775530) （No.51775530）
国家科技重大专项项目(No.2015ZX02101) （No.2015ZX02101）
