中国空间科学技术

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单点伪随机激振传递函数法辨识宇航器结构模态参数

衣金增   

  1. 北京环境试验工程研究所
  • 发布日期:1986-10-25

IDENTIFICATION OF SPACECRAFT STRUCTURAL MODAL PARAMETER BASED ON TRANSFER FUNCTION WHICH IS OBTAINED BY MEANS OF SINGLE POINT PSEUDO-RANDOM EXCITATION

Yi Jinzeng   

  • Online:1986-10-25

摘要: <正> 一、引言在研制航天器的过程中,经常遇到各种技术问题的决断,其中不少需要通过结构动态分析来解决。例如:动态载荷、稳定性、控制与结构的相互作用、隔振、消振和使用寿命等。模态试验的目的就是从所测得的输入激振和响应输出信息中去辨识结构固有的动态特性(固有频率、阻尼系数、振型向量等),用模态试验结果去验证和修正有限元模型,校核动态分析结果的有效性,检查结构的薄弱环节以及鉴定结构总体设计的合理性,从而进一步依

Abstract: The Paper presents method for identification spacecraft structural modal parameter based on transfer functions which is obtained by means of single point pseudo-random excitation, some problems in test and data reduction were also discussed.