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利用零极点设计数字带陷滤波器 被引量:3

Design Notch Filter with Placement of Poles and Zeros
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摘要 在数字信号处理的研究中,为解决工频干扰,可以采用数字带陷滤波器方法,传统的零极点配对方法存在频率响应不均匀和增益不对称的特点。提出了一种新的设计带陷数字滤波器方法,能克服传统设计方法的缺陷。方法是从零极点配置法演绎而来的,主要思想是零点设置在带陷频率处,极点不在极径方向,偏移数字滤波器的极点,用最小二乘方法估计出滤波器的参数进行仿真。仿真结果表明方法可以改善传统方法设计带陷数字滤波器的缺陷,使数字滤波器的频谱均匀对称,即直流增益等于Nyqu ist频率增益,通带增益成对称性。通带特性得到更好改善。证明新方法优于传统的零极点配置法设置带陷数字滤波器。 To solve the frequency interference,we can adopt notch digital filter,but the traditional placement of poles and zeros is of characteristics of unsymmetry.This paper presents an improved design to implement notch digital filter by placement of poles and zeros and overcome the shortcoming of traditional method.This method is derived from the old algorithm by changing the position of the poles,which overcomes the deficiencies of the filter by traditional design.The main idea is to place the zero in the notch frequency,and the pole off the direction of polar radius by moving the pole of the digital filter.Then the coefficients to control the performance of passband are estimated.The result shows that this method not only controls passband gain of notch filter but also solves the passband symmetry of the filter according to the expected specification.The simulation shows that this method is superior to the traditional zero-pole placement method to design the notch digital filter.
作者 谭家杰
出处 《计算机仿真》 CSCD 北大核心 2011年第7期379-381,390,共4页 Computer Simulation
基金 湖南省教育厅资助科研项目(09C174)
关键词 零极点 数字带陷滤波器 设计 Poles and zeros Digital notch filter Design
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  • 1谷会东,赵雷,石磊,刁兴中,赵鸿宾.电磁轴承支承挠性转子过临界控制器设计[J].清华大学学报(自然科学版),2005,45(6):821-823. 被引量:9
  • 2尚玲艳,周坚刚.垂直带钢磁力位控系统研究[J].计算机仿真,2007,24(6):307-310. 被引量:4
  • 3高鹏.超窄带接收机冲击滤波器研究[D].南京:东南大学信息科学与工程学院,2010.
  • 4Walker H R. High Speed Binary Data Communication Sys- tem [ P]. US Patent :4742532,1988.
  • 5Walker H R. VPSK and VMSK Modulation Transmit Dig- ital Audio and Video at 15 Bits/sec./Hz [ J]. IEEE Transactions on Broadcast Engineering. 1997,43 ( 1 ) : 96-103.
  • 6Walker H R and Stryzak B. Comparing Ultra Wideband and Ultra Narrow Band Modulation [ C ]. InternationalConference on Computing, Communications and Control Technologies, CCCT2004. Austin TX ,2004.
  • 7He F, Wu L N. Analysis of Power Spectrum of Continuous Phase Waveforms for Binary Modulation Communications [ C ]. ICUMT 2009, Oct. 2009, St. Petersburg, Russia.
  • 8吴乐南,靳一,冯熳等.多元位置随机极性MCP.EBPSK调制和解调方法[P].2011.12.10,发明专利申请号,201110431039.5.
  • 9Gao Y J,Tian H, Xu H B, LiangZ, Zhang P. The re- search on the design of filter banks in generalized multi- carrier technique [ J ]. 2006 6th International Conference on ITS Telecommunications Proceedings :519-522.
  • 10Toon van Waterschoot, Marc Moonen. A Pole-Zero Place- ment Technique for Designing Second-Order IIR Parametric Equalizer Filters [ J ]. Audio, Speech, and Language Pro- cessing, IEEE Transactions on. 2007,15 (8) :2561-2565.

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