基于虚拟传感的分散声音的积极控制强大的设计策略
Xiaoyan Cui1,2, Xiaolin Wang1, Wanyu Yang1,2
1Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.
The Journal of the Acoustical Society of America
|October 24, 2023
概括
这项研究通过优化虚拟传感 (VS) 方法的传感器放置来增强主动声学隐蔽. 最佳布局显著提高了对检测波变化的稳定性,特别是在额外波方法 (AFM) 中.
科学领域:
- 声学和信号处理
- 活动噪音控制 活动噪音控制
- 超材料和声学遮
背景情况:
- 主动声学隐蔽依赖于虚拟传感 (VS) 方法,如远程麦克风方法和额外波方法 (AFM).
- 培训和控制阶段之间的环境一致性对于基于VS的分散声音控制系统至关重要.
- 探测波发生角度的不确定性可能会降低基于VS的控制方法的性能.
研究的目的:
- 调查探测波冲击角不确定性对分散声控制的两个VS方法的影响.
- 为物理传感器布局提出一个强大的设计策略,以减轻性能退化.
- 提高主动声学遮蔽系统的稳定性和有效性.
主要方法:
- 对远程麦克风和额外波方法 (AFM) 发生角不确定性的影响分析.
- 开发一个强大的设计策略,使用最小化优化来实现最佳的物理传感器放置.
- 使用有限长度圆柱形散射模型进行数值模拟,以验证拟议的策略.
主要成果:
- 建议的最佳传感器放置策略有效地减少了检测波变化引起的性能下降.
- 附加波器方法 (AFM) 与最佳传感器放置相结合,显示出强度的显著改善.
- 与均放置和基于Wiener解决方案的控制相比,在最佳放置的AFM中观察到大约14.5dB和10.8dB的最坏情况下的降噪改进.
结论:
- 最佳的物理传感器布局是一种可行的策略,可以提高基于虚拟传感的分散声音控制的稳定性.
- 额外的过方法 (AFM) 与优化的传感器配置相结合,在具有挑战性的声环境中提供了卓越的性能.
- 这项研究提供了一种实际方法,以提高主动声学遮技术的可靠性和有效性.
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