电子线路实验中故障信号的检测与分离  

Fault signal detection and separation in electronic circuit experiment

作　　者：相乾 石甲栋 刘积学 Xiang Qian;Shi Jiadong;Liu Jixue(School of Physics and Electronic Engineering,Fuyang Normal university,Fuyang Anhui,236037)

机构地区：[1]阜阳师范大学物理与电子工程学院,安徽阜阳236037

出　　处：《电子测试》2021年第21期9-12,61,共5页Electronic Test

基　　金：阜阳师范大学教研项目(2018JYXM63)、(2017PPJY26);基础教育研究成果培育专项(2019JCJY25)。

摘　　要：在学习放大电路实验中,学生经常因为静态工作点设置不当、导线接触不良、仪器使用不当而致使实验异常,无法根据故障现象判断具体故障原因。本文通过Multisim、Matlab软件对放大电路中的故障进行模拟分析,构建故障现象表,有助于快速检测排查故障。同时,如果有无法排查的故障干扰时,可采用FastICA盲源分离算法,对受干扰的输出信号进行分离,仿真结果显示该方法能够有效地恢复出原始信号。In the experiment of learning amplifier circuit,students often make the experiment abnormal because of the improper setting of static working point,poor contact of wires and improper use of instruments.Therefore,the specific fault causes cannot be judged according to the fault phenomenon.This paper analyzes the faults in the amplifier circuit by Multisim and MATLAB software,and constructs the fault phenomenon table,which is helpful to detect and check the faults quickly.At the same time,if there is any trouble interference which can not be checked,FastICA blind source separation algorithm can be used to separate the disturbed output signals.The simulation results show that the method can recover the original signal effectively.

关 键 词：盲源分离 故障信号检测 放大器 FASTICA 

分 类 号：G642.423[文化科学—高等教育学] TN70-4[文化科学—教育学]