摘要
卫星主动段所承受的真实振动环境为多轴同时发生,目前的振动试验方法为单轴分别加载,是一种非真实近似方法.为了模拟真实的卫星振动环境,并缩短研制周期,提出了一种卫星三轴振动试验条件等效制定方法.利用有限元分析技术开展单轴仿真分析,基于单轴仿真结果和响应最大包络原则,将该问题转化为数学优化问题.引入遗传算法(geneticalgorithm,GA)等全局优化算法,搭建优化流程,实现三轴试验条件的合理化制定.该方法能够真实模拟主动段振动环境,使航天器考核更合理.
The real vibration of a satellite in the power phase occurs simultaneously along the multiaxial directions.However,in the current vibration is loaded separately on uniaxial vibration test methods,which are unreal approximation.To simulate the real satellite vibration environment and shorten the development time,an equivalent formulation method for satellite triaxial vibration conditions was proposed.Using finite element analysis(FEA)technology to perform uniaxial simulation analysis,the problem was transformed into mathematical optimization based on the results of uniaxial simulation and the principle of maximum response envelope.The genetic algorithm(GA)was introduced to establish the optimal process and the rational formulation of triaxial test conditions was further achieved.The method can realistically simulate the vibration environment during the launch phase to make the evaluation of the satellite more reasonable.
作者
马雨嘉
刘质加
扈勇强
冯振伟
常静
张一鹏
MA Yujia;LIU Zhijia;HU Yongqiang;FENG Zhenwei;CHANG Jing;ZHANG Yipeng(DFH Satellite Co.,Ltd.,Beijing 100094,China)
出处
《先进小卫星技术（中英文）》
2024年第4期52-61,共10页
Advanced Small Satellite Technology
关键词
卫星
三轴振动试验
动力学分析
优化问题
试验条件
遗传算法
satellite
triaxial vibration test
dynamic analysis
optimal problem
test conditions
genetic algorithm
