基于UKF的结构物理参数与可靠度实时评估方法  

Real-time Assessment Method for Structural Physical Parameters and Reliability Based on UKF

作　　者：平宇飞 Ping Yufei

机构地区：[1]中国飞行试验研究院

出　　处：《工程机械》2024年第3期84-89,I0014,共7页Construction Machinery and Equipment

摘　　要：现今在轨航天器饱受空间碎片撞击的威胁,因而发展一种实时的结构关键性能参数估计方法意义重大。基于无迹卡尔曼滤波(UKF)推导剪切形框架结构的刚度参数估计算法,该方法具有采样近似精度高、无需求Jacobi矩阵的优势。结合实时可靠度评估理论,得到结构实时可靠度评估曲线,对结构的维修护理具有指导意义。The safety of today's on-orbit spacecrafts is threatened by space debris impacts,and thus it is of great significance to develop a real-time method for estimating the critical performance parameters of structures.Based on Unscented Kalman Filter(UKF),the stiffness parameter estimation algorithm for shear frame structures is derived,which has the advantages of high sampling approximation accuracy and no demand of Jacobi matrix.Combined with the theory of real-time reliability assessment,the realtime reliability assessment curve of the structure is obtained,which is of guiding significance for the maintenance and care of the structure.

关 键 词：UKF 剪切框架 物理参数识别 结构可靠性 实时评估 

分 类 号：V528[航空宇航科学与技术—人机与环境工程] V467