TY - JOUR
T1 - 基 于 虚 拟 误 差 传 感 的 大 尺 度 空 间有 源 降 噪 性 能 研 究
AU - Dai, Hai
AU - Chen, Ke An
AU - Li, Rong
AU - Yu, Hao Xin
N1 - Publisher Copyright:
© 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.
PY - 2024/4
Y1 - 2024/4
N2 - Aimed at the problem of limited placement of error microphones in large-scale spatial active noise reduction systems, this paper used the virtual error sensing technology to place multiple virtual error microphones in the noise reduction target area, and transferred the quiet zones from the physical error microphone points to the virtual error microphone points,expanded the range of the quiet zones in the noise reduction target area. In order to analyze and study the noise reduction performance and influ⁃ encing factors,the principle and algorithm of multi-channel virtual error sensing were given first,and then the noise reduction per⁃ formance and the number and placement of physical and virtual error microphones ware simulated and analyzed. Finally,the noise reduction performance and influencing factors were verified experimentally in a model cabin of a turboprop aircraft. The simulation and experimental results show that the used virtual error sensing was beneficial to increase the average noise reduction and quiet zone of the target noise reduction area,the placement of the physical and virtual error microphones directly affects the distribution of the quiet zones,a reasonable number and placement of physical and virtual error microphones can expand the quiet zones to cov⁃ er the noise reduction target area 100%,and the optimal number of error microphones was related to the noise frequency character⁃ istics of the primary sound field.
AB - Aimed at the problem of limited placement of error microphones in large-scale spatial active noise reduction systems, this paper used the virtual error sensing technology to place multiple virtual error microphones in the noise reduction target area, and transferred the quiet zones from the physical error microphone points to the virtual error microphone points,expanded the range of the quiet zones in the noise reduction target area. In order to analyze and study the noise reduction performance and influ⁃ encing factors,the principle and algorithm of multi-channel virtual error sensing were given first,and then the noise reduction per⁃ formance and the number and placement of physical and virtual error microphones ware simulated and analyzed. Finally,the noise reduction performance and influencing factors were verified experimentally in a model cabin of a turboprop aircraft. The simulation and experimental results show that the used virtual error sensing was beneficial to increase the average noise reduction and quiet zone of the target noise reduction area,the placement of the physical and virtual error microphones directly affects the distribution of the quiet zones,a reasonable number and placement of physical and virtual error microphones can expand the quiet zones to cov⁃ er the noise reduction target area 100%,and the optimal number of error microphones was related to the noise frequency character⁃ istics of the primary sound field.
KW - active noise control
KW - error microphone
KW - quiet zone
KW - spatial noise reduction
KW - virtual error sensing
UR - http://www.scopus.com/inward/record.url?scp=85193591759&partnerID=8YFLogxK
U2 - 10.16385/j.cnki.issn.1004-4523.2024.04.014
DO - 10.16385/j.cnki.issn.1004-4523.2024.04.014
M3 - 文章
AN - SCOPUS:85193591759
SN - 1004-4523
VL - 37
SP - 677
EP - 685
JO - Zhendong Gongcheng Xuebao/Journal of Vibration Engineering
JF - Zhendong Gongcheng Xuebao/Journal of Vibration Engineering
IS - 4
ER -