Optimization of Shunted Loudspeaker for Sound Absorption by Fully Exhaustive and Backtracking Algorithm
Optimization of Shunted Loudspeaker for Sound Absorption by Fully Exhaustive and Backtracking Algorithm
复制标题
基于完全穷举回溯算法的分流扬声器吸声优化
DOI：
10.3390/app11125574
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发表时间：
2021-06-01
影响因子：
2.7
通讯作者：
Liu, Bilong
中科院分区：
文献类型：
--
作者：
Li, Zihao;Li, Xin;Liu, Bilong
具有负阻抗转换器的分流扬声器是一个具有多个影响参数的物理系统。本文采用完全穷举回溯算法对运动质量、总刚度、阻尼、线圈电感、力因数、电路电阻、电感和电容等参数进行优化，以期在特定的频率范围内获得最佳的吸声效果。以100~450赫兹范围内的最大平均吸声系数为目标函数，分析了分流扬声器的优化参数。仿真结果表明，与市场上典型的四英寸扬声器相比，该扬声器的力系数和运动质量都可以得到充分的降低。以市场上的一款扬声器为例，给出了分流扬声器的四个优化参数，并对其吸声系数进行了测试验证。实测结果与预测结果吻合较好，证明了该算法的适用性。
The shunted loudspeaker with a negative impedance converter is a physical system with multiple influencing parameters. In this paper, a fully exhaustive backtracking algorithm was used to optimize these parameters, such as moving mass, total stiffness, damping, coil inductance, force factor, circuit resistance, inductance and capacitance, in order to obtain the best sound absorption in a specific frequency range. Taking the maximum average sound absorption coefficient in the range of 100–450 Hz as the objective function, the optimized parameters of the shunted loudspeaker were analyzed. Simulation results indicated that the force factor and moving mass can be sufficiently reduced in comparison with that of a typical four-inch loudspeaker available on the market. For a given loudspeaker from the market as an example, the four optimized parameters of the shunted loudspeaker were given, and the sound absorption coefficient was measured for verification. The measured results were in good agreement with the predicted results, demonstrating the applicability of the algorithm.