非晶丝单磁芯双绕组闭环系统新型磁场传感器研究  

Study of the New Magnetic Sensor Using Single Amorphous Wire Core and Double-Winding Closed Loop System

作　　者：鲍丙豪[1] 吴伟[2] 胡恩球[2] 

机构地区：[1]安徽机电学院,芜湖241000 [2]华中理工大学,武汉430074

出　　处：《电子测量与仪器学报》2001年第3期61-66,共6页Journal of Electronic Measurement and Instrumentation

基　　金：安徽省科委立项;安徽机电学院青年科学资金资助项目

摘　　要：本文研究了利用具有近零磁致伸缩系数钴基非晶态合金丝研制的新型磁场传感器。提出了采用单非晶丝磁芯双绕组结构的磁敏探头 ,改善了多谐振荡桥路的对称性 ,并通过引入负反馈形成的闭环测量系统 ,使非晶磁芯工作于零场附近的线性区域 ,从而使传感器的线性测量范围、线性度、温度稳定性及动态特性指标得以提高。对传感器的工作原理进行了分析 ,并设计了该传感器的信号处理电路 ,对研制中的关键技术作了介绍 。A new type magnetic sensor using near-zero magnetostriction cobalt-based amorphous wire was studied in the paper.A magentic sensitive element utilizing single-core and double-winding structure was proposed,and that improved the symmetry of the multivibrator.The amorphous core operated at a linear range near zero field strength because of introducing a negative feedback closed loop system and therefore the measuring linear range,linearity,temperature stability and dynamic characteristics were improved.The principle of the sensor were analyzed and the signal processing circuit was designed.The key technology to develop the sensor was presented and the measuring results were partly shown.

关 键 词：单磁芯双绕组 非晶丝 负反馈 闭环系统 磁场传感器 

分 类 号：TP212.13[自动化与计算机技术—检测技术与自动化装置]