Online Identification for Aerodynamic Parameters of the Damaged Aircraft

Abstract:

Based on the wing damaged aircraft for background, the online identification method of mutational parameters was studied. After structure damaged, the symmetry of the aircraft was broken, causing the pneumatic structure of the vertical and horizontal highly coupled. To identify the aerodynamic parameters, firstly aerodynamic forces and moments were estimated as the output data of identification. Then the model of identification was selected according to the coupled pneumatic structure. Finally an identification method called Limited Recursive Least Squares (LRLS) was introduced, in which forgetting factor, weight matrix and limit item were used. The simulation results show that this method is capable to resolve the problem of strong coupling and sudden changing, while meeting the real time and accuracy requirement of online identification.

• Periodical: Applied Mechanics and Materials (Volumes 278-280)
• Pages: 793-796
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.278-280.793
• Online since: January 2013
• Authors: He Ping Wei, Ling Yu Yang, Jing Zhang, Gong Zhang Shen
• Keywords: Limited Recursive Least Squares, Mutational Parameter, Online Identification

References

[1] Tomayko, J.E. and C. Gelzer, The Story of Self-Repairing Flight Control Systems[J]. NASA Dryden Flight Research Center: Washington, (2003).

[2] T.J.J. Lombaerts, H.O. Huisman, Q.P. Chu, J.A. Mulder, D.A. Joosten: Nonlinear Reconfiguring Flight Control Basedon Online Physical Model Identification. JOURNAL OF GUIDANCE, CONTROL, AND DYNAMICS. Vol. 32, No. 3 , May–June (2009).

DOI: 10.2514/1.40788

[3] J. Buffington, P. Chandler and M. Pachter. Integration of On-line Identification and Optimization-based Control Allocation. AIAA(98)-37178.

[4] Song Xiaodong Yang Lingyu, Shen Gongzhang. a New Online Identification Method Sdudy on Aerodynamic Parameters of Multiple Control Surfaces Aircraft. Flight Mechanics, Vol. 26 (1), (2008) (In Chinese).

[5] Su Haoqin, Song Shujie, Deng Jianhua. an Online Identification Algorithm Applies to the Case of Rudder Damaged Aircraft [J]. Journal of Northwestern Polytechnical University, Vol. 23 (3), (2005) (In Chinese).