Maximum likelihood estimation of parameters in nonlinear flight mechanics systems

Jategaonkar, RV and Plaetschke, E (1985) Maximum likelihood estimation of parameters in nonlinear flight mechanics systems. In: Conference on Identification and system parameter estimation 1985, 3-7 July 1985, United Kingdom.

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Two methods for maximum-likelihood estimation of flight mechanics parameters have been developed. They are applicable to system models which may be nonlinear in the state and control variables as well as in the parameters to be estimated. The optimization problem has been solved by using both minimum-search methods and the quasi-linearization method. Advantages and disadvantages of both methods are discussed. In the latter case the need for deriving explicit sensitivity equations has been avoided by approximating the sensitivity coefficients by numerical differences. This results in a computationally attractive implementation of the estimation method for routine applications to general nonlinear systems. These techniques have been applied to the problems of kinematic consistency checking of flight test data as well as estimation of aerodynamic derivatives. (Author)

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Mathematical models;Sensitivity;Mechanics;Kinematics; Optimization;Approximation;Aerodynamics;Flight testing; Control systems;Parameter estimation;Presses;Identification; Maximum likelihood estimation;Computation;Flight Mechanicas; Nonlnerar systems;Parameter identification;Aircraft maneuvwers
Subjects: AERONAUTICS > Aircraft Stability and Control
Depositing User: M/S ICAST NAL
Date Deposited: 10 Oct 2006
Last Modified: 24 May 2010 04:21

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