摘要
研究了运载火箭基于动力学与运动学模型的主发动机故障下的推力在线辨识问题,仅基于导航敏感器件的惯性测量信息,利用多信息融合的带遗忘因子的最小二乘法,实现了发动机推力大小的在线实时辨识,通过辨识的推力大小进而对发动机进行故障诊断。仿真结果表明,该方法能够准确快速地辨识出发动机推力大小的变化。
The thrust identification problem of launch vehicle based on dynamic and kinematics model is studied.Based on the inertial measurement information of the navigation sensitive device,the least squares method of multi-information fusion is applied to identify the engine thrust online,so that the fault diagnosis of the engine is achieved.The simulation results show that the proposed method can identify the variation of engine thrust accurately and quickly.
作者
王硕
潘豪
白文艳
肖利红
Wang Shuo;Pan Hao;Bai Wenyan;Xiao Lihong(National Key Laboratory of Science and Technology on Aerospace Intelligence Control,Beijing 100854,China;Beijing Aerospace Automatic Control Institute,Beijing 100854,China)
出处
《航天控制》
CSCD
北大核心
2019年第6期8-12,共5页
Aerospace Control
关键词
推力辨识
故障诊断
最小二乘法
多信息融合
Identify thrust
Fault diagnosis
Least square method
Multi-information fusion
