石墨烯热声换能器的有源控制应用

The Application of Graphene Thermoacoustic Transducers in Active Noise Control

石墨烯热声换能器是一种基于热声机理的新型换能器,具备频率响应宽和声压波动小的优势。本文首次提出以石墨烯热声换能器为基础的有源噪声控制研究。利用相消干涉原理,建立有源控制模型,以总辐射径向声强为目标函数,阐述降噪效果与声源间距、声频率的关系,探究了石墨烯热声换能器在噪声控制领域的可行性。

Graphene transducers are new loudspeakers based on thermoacoustic effect,which have the advantages of a wide frequency response and low acoustic fluctuations.This paper presents the first active noise control study based on graphene film.The relationship between the noise reduction and the spacing between the two sources and the output frequency is analysed to investigate the feasibility of graphene transducers in active noise control by using the phase-dissipation interference principle and establishing an active control model with the normal sound intensity of total radiation as the control target.