Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency

A modified pole-zero matched discretization method is peresented for overcoming performance degradation of the notch filter discreted by currently popular methods when the notch frequency approaching the Nyquist frequency.The frequency characteristic of the discreted notch filter is kept up with tha...

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Autor principal:	Zhao Yanhui,Zhang Yongjun,Li Haifeng,Zhao Xia
Formato:	article
Lenguaje:	ZH
Publicado:	Editorial Office of Aero Weaponry 2021
Materias:	\|notch filter\|digital filter\|ferequency prewarping\|modified pole-zero matched discretization\|missile elastic vibration suppression Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/4e1a49351d6741cf833b2820c3989ac8
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id	oai:doaj.org-article:4e1a49351d6741cf833b2820c3989ac8
record_format	dspace
spelling	oai:doaj.org-article:4e1a49351d6741cf833b2820c3989ac82021-11-30T00:13:57ZResearch on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency1673-504810.12132/ISSN.1673-5048.2019.0125https://doaj.org/article/4e1a49351d6741cf833b2820c3989ac82021-02-01T00:00:00Zhttp://www.aeroweaponry.avic.com/fileup/1673-5048/PDF/1616466544372-1894538067.pdfhttps://doaj.org/toc/1673-5048A modified pole-zero matched discretization method is peresented for overcoming performance degradation of the notch filter discreted by currently popular methods when the notch frequency approaching the Nyquist frequency.The frequency characteristic of the discreted notch filter is kept up with that of notch filter in continuous domain by modifying damping ratio of transfer function in continuous domain to a constrained expectation. The numerical solution is obtained by solving a specified constraint equation and the difficulty of solving complex transcendental equation is avoided.The performance of digital notch filter is tested in digital simulation with conditions that the notch frequency with limited uncertainties.The simulation results show that the modified pole-zero matched discretization method presented in this paper is valid to overcome the drawback of currently popular discretization methods when the notch frequency approaching the Nyquist frequency.Zhao Yanhui,Zhang Yongjun,Li Haifeng,Zhao XiaEditorial Office of Aero Weaponryarticle\|notch filter\|digital filter\|ferequency prewarping\|modified pole-zero matched discretization\|missile elastic vibration suppressionMotor vehicles. Aeronautics. AstronauticsTL1-4050ZHHangkong bingqi, Vol 28, Iss 1, Pp 104-108 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	\|notch filter\|digital filter\|ferequency prewarping\|modified pole-zero matched discretization\|missile elastic vibration suppression Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	\|notch filter\|digital filter\|ferequency prewarping\|modified pole-zero matched discretization\|missile elastic vibration suppression Motor vehicles. Aeronautics. Astronautics TL1-4050 Zhao Yanhui,Zhang Yongjun,Li Haifeng,Zhao Xia Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency
description	A modified pole-zero matched discretization method is peresented for overcoming performance degradation of the notch filter discreted by currently popular methods when the notch frequency approaching the Nyquist frequency.The frequency characteristic of the discreted notch filter is kept up with that of notch filter in continuous domain by modifying damping ratio of transfer function in continuous domain to a constrained expectation. The numerical solution is obtained by solving a specified constraint equation and the difficulty of solving complex transcendental equation is avoided.The performance of digital notch filter is tested in digital simulation with conditions that the notch frequency with limited uncertainties.The simulation results show that the modified pole-zero matched discretization method presented in this paper is valid to overcome the drawback of currently popular discretization methods when the notch frequency approaching the Nyquist frequency.
format	article
author	Zhao Yanhui,Zhang Yongjun,Li Haifeng,Zhao Xia
author_facet	Zhao Yanhui,Zhang Yongjun,Li Haifeng,Zhao Xia
author_sort	Zhao Yanhui,Zhang Yongjun,Li Haifeng,Zhao Xia
title	Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency
title_short	Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency
title_full	Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency
title_fullStr	Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency
title_full_unstemmed	Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency
title_sort	research on design method of digital notch filter when notch frequency approaching nyquist frequency
publisher	Editorial Office of Aero Weaponry
publishDate	2021
url	https://doaj.org/article/4e1a49351d6741cf833b2820c3989ac8
work_keys_str_mv	AT zhaoyanhuizhangyongjunlihaifengzhaoxia researchondesignmethodofdigitalnotchfilterwhennotchfrequencyapproachingnyquistfrequency
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Research on Design Method of Digital Notch Filter When Notch Frequency Approaching Nyquist Frequency

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