表面缺陷对波导丝中的扭转波传播影响研究  

Research on influence of surface deficiency on propogation of torsional wave in waveguide wire

作　　者：周泓辰 周翟和[2] 汪炜[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]南京航空航天大学自动化学院,江苏南京210016

出　　处：《传感器与微系统》2014年第8期11-14,共4页Transducer and Microsystem Technologies

摘　　要：波导丝是磁致伸缩位移传感器的核心元件,其表面质量直接影响传感器的测量精度。为研究波导丝表面质量对检测信号的影响规律,通过建立扭转波在波导丝中传播的力学模型,得到扭转波的波动方程。在此基础上,对2种不同表面状况下波导丝中扭转波的传播开展数值模拟和实验验证。研究结果对今后高精度大量程磁致伸缩位移传感器的研制具有一定参考作用。The waveguide wire is the key component of magnetostrictive displacement sensor, its surface quality directly influences measurement precision of sensor. In order to research influence rule of surface waveguide wire on detecting signal,wavel equation is achieved by establishing mechanical model of torsional wave propagation in waveguide wire. On this basis, propagation of torsional wave in two different surface quality of waveguide wire is investigated by using numerical simulation and experimental verification. Research results has certain reference effect on development of magnetostrictive displacement sensor with wide-range and high-precision.

关 键 词：磁致伸缩 波导丝 扭转波 数值模拟 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]