In order to reduce the interference of stress wave in muzzle vibration measurement of rocket launchers,a mechanical filter was designed.A falling ball test system was set up to verify that the stress wave can affect the measurement results of acceleration sensors,and the filtering mechanism of the mechanical filter was explained.The frequency response characteristics of the mechanical filter were studied by frequency sweep test.These characteristics are consistent with the theoretical calcula-tion.Time domain and frequency domain signals of the vibration acceleration were collected by acce-leration sensors with and without the mechanical filter,then these signals were compared and analyzed.The results show that the mechanical filter has a good filtering effect in the muzzle vibration measure-ment of rocket launchers.The integral operation of acceleration shows that the mechanical filter im-proves the vibration test accuracy to a certain extent.It is necessary to install the mechanical filter in the vibration test of rocket launchers.
关键词
机械滤波器/振动加速度测试/应力波/加速度积分
Key words
mechanical filter/vibration acceleration test/stress wave/acceleration integral
维普
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