极大似然法及在有控飞行器气动参数辨识中的应用

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1991, Vol. 12 ›› Issue (11): 644-649.

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MAXIMUM LIKELIHOOD ALGORITHM AND ITS APPLICAITON TO PARAMETERS IDENTIFICATION OF THE CLOSED-LOOP FLIGHT VEHICLES

Cui Pingyuan, Yang Di, Wu Yaohua, Wang Xuexiao

Harbin Institute of Technology

Received:1988-05-01 Revised:1990-12-25 Online:1991-11-25 Published:1991-11-25

Abstract

Abstract: The maximum likelihood algorithm is used to estimate the aerodynamic coefficients of the closed-loop flight vehicles. Based on the dynamic model of aircraft, using the differential smooth technique, the linear estimation formula of aerodynamic parameters is given. For the closed-loop flight vehicles, determination of aerodynamic model and the effect of nonlinearity of sensors on the accuracy of identification of aerodynamic coefficients are investigated. Finally, some considerations for the aerodynamic parameters estimation in the case of closed-loop flight are given by the estimation results of aerodynamic coefficients from the 6DOF simulated data of a closed-loop vehicle.

Key words: aerodynamic parameter, parameter identification, closed-loop identification

Cui Pingyuan;Yang Di;Wu Yaohua;Wang Xuexiao. MAXIMUM LIKELIHOOD ALGORITHM AND ITS APPLICAITON TO PARAMETERS IDENTIFICATION OF THE CLOSED-LOOP FLIGHT VEHICLES[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1991, 12(11): 644-649.

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MAXIMUM LIKELIHOOD ALGORITHM AND ITS APPLICAITON TO PARAMETERS IDENTIFICATION OF THE CLOSED-LOOP FLIGHT VEHICLES

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