摘要
根据滤波器的技术指标,通过理论计算确定滤波器元器件参数,在NI ELVISⅡ电子实验平台上搭建有源低通滤波器,通过LabVIEW编写程序采集信号,采用3种方式分析低通滤波器的时域特性、频率特性和阶跃响应,对比分析了巴特沃斯滤波器和贝塞尔滤波器的作用效果。整个实验过程操作简单,显示直观,能较好地满足科研和教学需要。
According to the technical index of the filter,the parameters of the filter components are determined by theoretical calculation.The active low-pass filter is built on the NI ELVISⅡelectronic experimental platform.The signal is collected by the LabVIEW writing program.The time domain characteristics,the frequency characteristics and step response of the low-pass filter are analyzed by three methods.Finally,the effects of the Butterworth filter and the Bessel filter are compared and analyzed.The whole experimental process is simple and intuitive,and can better meet the needs of scientific research and teaching.
出处
《实验技术与管理》
CAS
北大核心
2017年第9期72-75,81,共5页
Experimental Technology and Management
基金
十三五国家科技重大专项科研任务项目(2016ZX05057006)
辽宁省普通高等教育本科教学改革研究项目"大连理工大学实验室重点建设项目"
关键词
有源低通滤波器
频率特性
阶跃响应
active low-pass filter
frequency characteristics
step response
