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航空仪表在做基本性能检查时,按HB6—76—76《航空仪表通用技术条件》规定,需加频率20—100赫兹,加速度为0．1~0．3g的蜂鸣振动。产生蜂鸣振动的设备称为蜂呜器。目前,主机厂和仪表厂所使用的蜂鸣器,主要是利用电磁铁吸合原理制成的。从结构来讲,有“吸合一释放式”和“吸合一释放打击式”。这两种蜂鸣器的振动波形差异很大。本文主要介绍蜂鸣器的工作原理、结构与振动波形分析以及蜂鸣振动的测量方法。
Aeronautical instruments in the basic performance inspection, according to HB6-76-76 “general technical requirements for aeronautical instrumentation,” the need to add the frequency of 20-100 Hz, acceleration of 0.1 ~ 0.3g buzzing vibration. A device that produces buzz vibrations is called a buzzer. At present, the buzzer used by the main engine factory and the meter factory is made mainly by the principle of electromagnet pull-in. From the structure speaking, there are “pull a pull-style” and “pull a pull-style hit.” The vibration waveform of these two buzzers varies greatly. This article mainly introduces the working principle of buzzer, structure and vibration waveform analysis and measurement method of buzz vibration.