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Design and analysis of new high order butterworth low pass filter
Author(s): 
Pages: 16-19
Year: Issue:  12
Journal: ELECTRONIC MEASUREMENT TECHNOLOGY

Keyword:  Butterworth低通滤波器极点分布Bode图阶跃响应曲线性能指标;
Abstract: 针对传统Butterworth低通滤波器存在检测精度、稳定性和响应时间之间的矛盾问题,提出了一种新型高阶Butterworth低通滤波器.首先将高阶Butterworth低通滤波器最靠近虚轴的主导极点与虚轴之间的夹角θ指定为常数,剩下的极点均匀地分布在复平面的Butterworth圆周上,从而设计出新型高阶Butterworth低通滤波器.最后对新型高阶Butterworth低通滤波器进行分析,分析结果表明:新型高阶Butterworth低通滤波器的响应速度较快,超调量较小,从而可以提高检测精度.
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