计算机工程与应用2018，Vol.54Issue(2)：48-54,61,8.DOI:10.3778/j.issn.1002-8331.1608-0401
结合零点配置与分子动优化设计IIR多频陷波器
摘要
Abstract
The infinite impulse response digital notch filters are applied to eliminate or suppress one or some specific fre-quency components in digital signal.On the basis of the essential two order notch filter,pole-zero doublets are added to design a new single notch structure. The pole angles of the two poles and the new added zero are both designed to be equal to the pole angle of the original zero,the polar radius of the new added pole is designed to be equal to the pole radius of the original pole.Furtherly,transition-band gain can be increased by adjusting the polar radius of the new added zero, which can narrow the transition zone and improve the performance of notch filter.A novel design approach of digital mul-tiple notch filters is proposed.By cascading improved single notch filter,optimizing the polar radius of the new added zero based on Kinetic-Molecular Theory based Optimization Algorithm(KMTOA),this method can realize the optimized design of notch filters with stable characteristics and accelerate the calculation speed.The practicability and robustness of the presented approach are validated by a series of simulation experiments.关键词
陷波滤波器/分子动理论优化算法/零极点配置Key words
notch filter/kinetic-molecular theory optimization algorithm/pole and zero displacement分类
信息技术与安全科学引用本文复制引用
刘孟垠,曾以成..结合零点配置与分子动优化设计IIR多频陷波器[J].计算机工程与应用,2018,54(2):48-54,61,8.基金项目
国家自然科学基金(No.61471310). （No.61471310）
