电磁喇叭分段线性振动响应及其声学特性的研究

郭继峰;任万滨;翟国富;赵宏伟

振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 224-227.

PDF(1904 KB)
PDF(1904 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 224-227.
论文

电磁喇叭分段线性振动响应及其声学特性的研究

  • 郭继峰1,2; 任万滨1; 翟国富1; 赵宏伟3
作者信息 +

Research on the piecewise linear vibration response of electromagnetic horn and acoustic characteristics

  • GUO Ji-feng1,2; REN Wan-bin1; ZHAI Guo-fu1; ZHAO Hong-wei3
Author information +
文章历史 +

摘要

根据电磁喇叭结构特征建立了其工作过程中时变电磁力激励条件下动铁心与膜片构成的分段线性振子动力学模型,应用数值积分方法分析了电磁喇叭振动响应特性。进而根据所得到的稳态振动幅值与频率结果仿真分析了电磁喇叭的声学特性,研究了触头初始压力及间隙参数对振动幅值、频率、声压级的影响规律,所得的结论可直接用于以电磁喇叭为代表的电声器件优化设计。

Abstract

The piecewise linear vibration model of electromagnetic horn which including movable iron core and diaphragm with the time-variable electromagnetic force excitation were built. Then the vibration responses of horn were obtained by using numerical integral method. According to the calculated steady vibration displacement amplitude and frequency, the acoustic characteristics of electromagnetic horn were analyzed by the simulation software. Therefore, the relationship between the vibration displacement amplitude, frequency and sound pressure level variation principle between initial pressure of contacts and gap parameters were also investigated comprehensively. The conclusions which were drawn are valuable in optimizing the electroacoustic device such as electromagnetic horn.

关键词

电磁喇叭 / 振动 / 分段线性 / 声压 / 优化

Key words

electromagnetic horn / vibration / piecewise linearity / sound pressure / optimization

引用本文

导出引用
郭继峰;任万滨;翟国富;赵宏伟. 电磁喇叭分段线性振动响应及其声学特性的研究[J]. 振动与冲击, 2011, 30(10): 224-227
GUO Ji-feng; REN Wan-bin; ZHAI Guo-fu;ZHAO Hong-wei. Research on the piecewise linear vibration response of electromagnetic horn and acoustic characteristics[J]. Journal of Vibration and Shock, 2011, 30(10): 224-227

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