卫星产品声振组合试验技术研究

The vibro-acoustic test technology for satellite

文章开展了声振组合试验技术的初步研究,探讨了卫星产品声振组合试验的控制方法,并以面积质量比大的卫星舱板产品为例研究了噪声与随机振动组合试验条件确定方法。结果表明:在进行噪声与正弦振动组合试验时,应先启动振动试验控制,后启动噪声试验控制,且正弦振动控制应采用滤波处理;在进行噪声与随机振动组合试验时,噪声激励与随机振动激励正常启动后,相互之间影响很小,可以按照要求的条件施加激励;对于面积质量比大的卫星产品,在结构上同时施加随机振动载荷和噪声载荷,声振组合试验考核更加合理。

The vibro-acoustic test technology for satellites is studied, including the controlling method of the vibro-acoustic test and the test conditions of the random vibration-acoustic test by using the satellite board with a large area to mass ratio. The results show that the sine vibration control should be filtered and conducted before the acoustic control in the sine vibration-acoustic test; the influences of the acoustic excitation and the random vibration excitation are small and the excitation condition can be applied as is normal in the random vibration-acoustic test; the random vibration excitation and the acoustic excitation can be applied on the structure at the same time for the satellite with a large area to mass ratio in the vibo-acoustic test.