公开(公告)号：EP3926508A1

公开(公告)日：2021-12-22

申请号：EP20908445.8

申请日：2020-05-07

申请人： Beijing Institute Of Spacecraft Environment Engineering

发明人： XIANG, Shuhong ,  YAN, Tingfei ,  GAO, Haiyang ,  FANG, Guiqian ,  WANG, Haiming ,  ZHANG, Jungang ,  LI, Xinming ,  HU, Yongqiang ,  FENG, Zhenwei ,  WANG, Dong ,  JIA, Ruijin ,  ZHANG, Jingchuan

IPC分类号： G06F30/20 ,  B64G7/00 ,  G06F119/10

摘要： Disclosed is a method for tailoring satellite random vibration and noise tests on the basis of area-to-mass ratio, and the method is used to tailor a random vibration test and a noise test in a ground verification test for satellites. The method comprises: first, performing satellite dynamics frequency response simulation analysis according to the random vibration test conditions of the satellite, and obtaining the power spectral density value of the random vibration test condition which corresponds to the corresponding frequency of the maximum frequency response at the key positions of the satellite; then, according to the acoustic test conditions of the satellite, performing simulation analysis of aerospace acoustic vibration response, obtaining the sound pressure level under the acoustic test conditions which corresponds to the corresponding frequency band of the maximum frequency response at the key positions of the satellite, and calculating the frequency bandwidth and sound pressure spectrum density; then calculating the area-to-mass ratio based on Miles Equation; and finally, calculating a break-even coefficient and a break-even point, and tailoring the random vibration test and noisy test according to the break-even point. In this method the contribution of the modal at each stage of the satellite to the vibration is fully considered and the tailoring threshold is quantified according to the dynamic characteristics of different types of satellites, such that the method has the characteristic of strong adaptability.