碳納米管薄膜揚(yáng)聲器設(shè)計(jì)及有源噪聲控制
[Abstract]:Carbon nanotube thin film loudspeaker is a new type of loudspeaker based on thermoacoustic effect developed in recent years. In order to explore the feasibility of carbon nanotube thin film loudspeaker as secondary sound source, the far-field sound pressure of carbon nanotube thin film and its main influencing factors were studied, and the adjustable shunt structure thin film loudspeaker was designed. It is the first time that carbon nanotube thin film is applied to active noise control, which is used as secondary sound source to construct active silencing model. The optimal control voltage of thin film sound source is deduced with the aim of minimizing the total sound power of secondary sound source. Five different thin film loudspeakers are designed to control the primary monopole sound source as secondary sound sources. The active control effect is calculated and the main factors affecting the control effect are analyzed.
【作者單位】: 蘇州大學(xué)城市軌道交通學(xué)院;中國科學(xué)院蘇州納米技術(shù)與納米仿生研究所;
【基金】:國家自然科學(xué)基金面上項(xiàng)目(51375321) 機(jī)械設(shè)備健康維護(hù)湖南省重點(diǎn)實(shí)驗(yàn)室開放基金項(xiàng)目(201402)
【分類號】:TN643
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