| 稳健的数字IIR滤波器设计 |
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| 引用本文： | 李峥嵘,桑怀胜,王飞雪,雍少为.稳健的数字IIR滤波器设计[J].国防科技大学学报,2003,25(4):31-37. |
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| 作者姓名： | 李峥嵘 桑怀胜 王飞雪 雍少为 |
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| 作者单位： | 国防科技大学ATR重点实验室,湖南,长沙,410073 |
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| 基金项目： | 国家部委项目资助(D99-21) |
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| 摘 要： | 利用级联型模拟椭圆滤波器设计方法、双线性模拟—数字滤波器变换方法和数字滤波器频带变换方法,设计了一种简便、稳健的级联型数字IIR滤波器。通过设定合理的频带变换参数,保证了该滤波器的稳定性;通过采用经验最优零、极点组织零、极点配对方法,可使该滤波器内部幅度限最小。最后给出了一个级联型数字椭圆带阻滤波器的设计实例。
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| 关 键 词： | 稳健的 数字IIR滤波器 稳定性 经验最优零、极点组织方法 |
| 文章编号： | 1001-2486(2003)04-0031-07 |
| 收稿时间： | 3/2/2003 12:00:00 AM |
| 修稿时间： | 2003年3月2日 |
The Design of the Robust Digital IIR Filters |
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| LI Zhengrong,SANG Huaisheng,WANG Feixue and YONG Shaowei.The Design of the Robust Digital IIR Filters[J].Journal of National University of Defense Technology,2003,25(4):31-37. |
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| Authors: | LI Zhengrong SANG Huaisheng WANG Feixue and YONG Shaowei |
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| Institution: | ATR Lab, National Univ. of Defense Technology, Changsha 410073, China;ATR Lab, National Univ. of Defense Technology, Changsha 410073, China;ATR Lab, National Univ. of Defense Technology, Changsha 410073, China;ATR Lab, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | By using the analog cascade elliptic filters design method, and the bilinear method of transforming analog filters to digital filters, and the frequency transformation method of digital filters, a simple robust cascading digital IIR filter is designed. The stability of this filter can be assured by setting rational frequency transformation parameters. The internal magnitude bound of this filter can be minimized by using an empirical optimal method of poles and zeros organization. At the end of this paper, an example of designing a cascading digital elliptic band stop filter is provided. |
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| Keywords: | robust digital IIR filters stability an empirical optimal method of poles and zeros organization |
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