發(fā)布時間：2019-02-28 09:17

【摘要】：為了簡化分離全息面兩側(cè)相干聲源的過程,提出僅依據(jù)單全息面上的數(shù)據(jù)直接進行聲場分離的方法。該方法通過將等效源配置在球面上,并根據(jù)等效源法近場聲全息的重構(gòu)原理,建立全息面上有誤差的測量值和計算值之間的數(shù)據(jù)關(guān)系,理論推導(dǎo)出單面聲場分離方法。仿真分析干擾聲源為脈動球源和受迫振動的簡支薄鋼板的分離結(jié)果,并對雙揚聲器的聲場分離進行了實驗驗證。結(jié)果表明:該方法對兩種干擾源都具有較好的分離精度,且有較高的可容忍誤差。
[Abstract]:In order to simplify the process of separating coherent sound sources on both sides of the hologram plane, a method is proposed to separate the sound field directly only according to the data on the single hologram plane. According to the principle of reconstruction of near-field acoustic holography using equivalent source method, the data relationship between the measured and calculated values on the hologram plane is established, and the separation method of one-sided acoustic field is deduced theoretically by placing the equivalent source on the sphere and according to the reconstruction principle of the near-field acoustic holography using the equivalent source method. The separation results of simply supported thin steel plates with pulsating spherical source and forced vibration are simulated and analyzed, and the acoustic field separation of double loudspeakers is verified by experiments. The results show that the proposed method has good separation accuracy and high tolerable error for both interference sources.
【作者單位】： 重慶大學機械傳動國家重點實驗室;重慶大學汽車工程學院;
【基金】：國家自然科學基金項目(51275540)資助
【分類號】：O422.2

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