支持控制参数在线优化的气动参数实时辨识方法  

Real Time Identification Method of Aerodynamic Parameters Supporting Online Optimization of Control Parameters

作　　者：钟鸿豪 曹玉腾 郑总准[1] 白文艳 钟声 Zhong Hong-hao;Cao Yu-teng;Zheng Zong-zhun;Bai Wen-yan;Zhong Sheng(Beijing Aerospace Automatic Control Institute,Beijing,100854)

机构地区：[1]北京航天自动控制研究所,北京100854

出　　处：《导弹与航天运载技术（中英文）》2022年第5期79-82,共4页Missiles and Space Vehicles

摘　　要：为了实现飞行控制参数的在线更新以及飞行器故障的在线检测,提出了一种支持控制参数在线优化的气动参数实时辨识方法,通过对噪声方差的在线估计,判断参数是否发生突变,进而通过修改协方差矩阵,保证递推最小二乘法的收敛速度和辨识精度,实现在线高精度辨识。最后,基于某飞行器对该方法进行了仿真验证,并与传统辨识方法进行对比,说明了该方法对时变参数有较强的辨识能力,验证了该方法的有效性。In order to realize online updating of flight control parameters and online detection of aircraft faults,a real-time identification method of aerodynamic parameters supporting online optimization of control parameters is proposed.By online estimation of noise variance,the mutation of parameters is judged,and then the convergence speed and identification accuracy of recursive least square method are guaranteed by modifying covariance matrix,and the online high-precision identification is realized.Finally,the proposed method is simulated on an aircraft to verify the efficiency of proposed method.

关 键 词：递推最小二乘法 方差估计 气动参数 在线辨识 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]