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

PDF(1904 KB)

Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (10) : 224-227.

论文

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 +

History +

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.

Key words

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

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

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