基于惯组信息的运载火箭主发动机推力故障在线辨识  

Online Fault Identification of Launch Vehicle Main Engine Based on the IMU

作　　者：王硕 潘豪[2] 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)

机构地区：[1]宇航智能控制技术国家级重点实验室,北京100854 [2]北京航天自动控制研究所,北京100854

出　　处：《航天控制》2019年第6期8-12,共5页Aerospace Control

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.

关 键 词：推力辨识 故障诊断 最小二乘法 多信息融合 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]