一种基于模态参数实时辨识方法的参数时变航天器控制方法  

A Time-Varying Spacecraft Control Method Based on Real-Time System State Estimation

作　　者：贾贵鹏 赵欣 赵育善[1] 师鹏[1] JIA Guipeng;ZHAO Xin;ZHAO Yushan;SHI Peng(School of astronautics,Beihang University,Beijing 100191)

机构地区：[1]北京航空航天大学宇航学院

出　　处：《飞控与探测》2019年第5期9-16,共8页Flight Control & Detection

基　　金：国家自然科学基金（11572019）

摘　　要：针对一种因挠性结构转动引起模态参数变化的航天器研究了一种基于模态参数辨识的控制方法。首先以一种刚柔耦合复杂航天器为对象,建立分析航天器的动力学模型。然后,基于该模型,采用一种基于改进递归预测器的子空间辨识(RPBSID)法模态辨识方法估计系统状态量。最后,基于辨识状态量采用无模型控制方法进行控制,通过基于MATLAB软件的仿真实验,验证了方法的有效性。A modal parameter identification method and a control method of one parameter changing spacecraft caused by resulted from rotation of flexible structure are researched.Firstly,the dynamic model of spacecraft is established based on a rigid-flexible coupled spacecraft.Secondly,based on the model,a modal parameter identification method based on an improved recursive predictor-based subspace identification(RPBSID)method is used to estimate the state value.Finally,a model-free control method is used using the state value,and the effectiveness of the method is demonstrated through the simulation based on MATLAB software.

关 键 词：状态估计 刚柔耦合航天器 改进RPBSID法 无模型控制方法 

分 类 号：TN911.73[电子电信—通信与信息系统] TP391.9[电子电信—信息与通信工程]