Title:
VARIABLE-STEP QUATERNION ADAPTIVE NOISE REDUCTION METHOD AND SYSTEM FOR ACTIVE IMPULSE NOISE CONTROL
Document Type and Number:
WIPO Patent Application WO/2024/051277
Kind Code:
A1
Abstract:
The present invention relates to a variable-step quaternion adaptive noise reduction method and system for active impulse noise control, and relates to the technical field of active control noise reduction. The method comprises the following steps: firstly, relatively clearly establishing a relationship between signal vectors of real and imaginary parts by using an orthogonal property inside a quaternion adaptive filter, and maintaining structural properties of real and imaginary components; then, setting, by using a variable-step algorithm, a certain function relationship between a reference signal and a convergence factor to replace the value of an original fixed step; and finally, by means of the feasibility of a simulation verification algorithm and by means of comparison and verification using the algorithm, optimizing the convergence performance and the noise reduction capability. The present invention has the advantages of having a simple structure, easily achieving engineering implementation and using a feedforward-based ANC system structure. As displayed by a simulation result, the noise reduction performance and the convergence speed are optimized; moreover, a processing dimension of a signal is expanded from one dimension to multiple dimensions, thereby providing some references for attenuating a multi-dimensional complex noise signal.
Inventors:
DU CHENGTAO (CN)
ZHANG BINGYAN (CN)
LIU XIANGYUAN (CN)
FANG JIE (CN)
FAN MIN (CN)
WANG ANMIN (CN)
XU JUNFENG (CN)
ZHANG BINGYAN (CN)
LIU XIANGYUAN (CN)
FANG JIE (CN)
FAN MIN (CN)
WANG ANMIN (CN)
XU JUNFENG (CN)
Application Number:
PCT/CN2023/102404
Publication Date:
March 14, 2024
Filing Date:
June 26, 2023
Export Citation:
Assignee:
UNIV WEST ANHUI (CN)
International Classes:
H03H21/00
Foreign References:
| CN115378402A | 2022-11-22 | |||
| CN112233644A | 2021-01-15 | |||
| US20170178617A1 | 2017-06-22 |
Other References:
"Master's Thesis", 1 May 2021, NORTH CHINA ELECTRIC POWER UNIVERSITY (BEIJING), CN, article ZHANG, BINGYAN: "Research on Active Noise Control Technology based on Quaternion Adaptive Filter", pages: 1 - 66, XP009553157, DOI: 10.27140/d.cnki.ghbbu.2021.000384
Attorney, Agent or Firm:
BEIJING SHENGXUN IP AGENT LLC (CN)
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