【作者】 尹云玉；

【Author】 Yin Yunyu (Beijing Intitute of Space System Engineering, Beijing, 100076)

【机构】 北京宇航系统工程研究所；

【摘要】 本文利用小波分析在时频两域都具有表征信号局部特征的特点,对固体火箭飞行遥测过载数据进行了小波分解,然后从结构动力学理论出发提出了一种识别固体火箭截面剪力和弯矩的方法,结合某型固体火箭的遥测参数对火箭主要截面弯矩和剪力进行了识别,给出了识别结果。本文的方法对自由-自由飞行的固体火箭截面横向载荷的评估及设计具有重要的参考意义。更多还原

【Abstract】 Using the capability of wavelet analysis to characterize the signal’s local property both in frequency and time domain, the wavelet decomposition of flight remoting overload data is performed. Then through the structural dynamic theory, a method for identificating the transverse load of solid rocket is introduced. Based on an example of solid rocket remoting data, the results of transverse shear force and bending moment are given. Such a method is practical in load identification for similar problems and much useful in engineering.更多还原