Analysis of stabilised output error methods

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Analysis of stabilised output error methods

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In the paper, analysis of stabilised output-error methods (SOEMs) for parameter estimation of unstable aircraft is presented. These methods overcome the numerical difficulties encountered in parameter estimation of unstable systems by utilising measured states. The methods, along with the output error method (OEM) and the equation error method (EEM), are briefly described for the sake of comparison. However, the main idea of the paper is to present asymptotic analysis of the SOEM. The results of application of SOEMs to simulated data of an unstable/augmented aircraft are presented.

Inspec keywords: aircraft control; parameter estimation; error analysis; statistical analysis; asymptotic stability

Other keywords: stabilised output error; asymptotic analysis; regression analysis; equation error; unstable aircraft; parameter estimation; simulation

Subjects: Stability in control theory; Error analysis in numerical methods; Other topics in statistics; Simulation, modelling and identification; Aerospace control

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