数字滤波对脉冲场信号测量的影响  

The effect of digital filter on pulsed high magnetic measuring signals

作　　者：晏政[1] 

机构地区：[1]长沙环境保护职业技术学院,长沙410004

出　　处：《微计算机信息》2010年第19期237-238,189,共3页Control & Automation

摘　　要：在脉冲电、磁场的环境下进行弱信号测量,需要特殊的测量技术。通常测量必须在脉冲宽度的时间(几十毫秒)间隔内完成且实验过程中外界的噪音很大,因此,需要利用滤波器对信号进行处理。本文主要讨论数字滤波对脉冲信号测量的影响,同时基于脉冲磁场下磁化测量,利用LabVIEW程序对滤波器进行分段滤波设置,实验得到一个失真较小的测量信号。For experiments in the circumstances of pulsed magnetic fields,special measuring techniques are required. Usually in a pulsed field,measurements have to be finished within the pulse duration（a few milliseconds）. Meanwhile,the magnitude of the measured signals are small and the noises is large,a digital filter to deal with these signals is used. The purpose of this paper is to describe the effect of digital filter in the pulsed high magnetic experiments,as well as introduce the measurement environments of magnetization. In the end,a less deformation of signals is obtained by a designed filtering system with LabVIEW procedure.

关 键 词：脉冲 数字滤波 LABVIEW 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]