Aircraft System Identification from Multisine Inputs and Frequency Responses

The identification of aircraft flight dynamics is often performed using frequency responses, which are nonparametric models that quantify the steady-state magnitude and phase of a dynamic system response to sinusoidal inputs, as a function of frequency. Frequency responses are computed from measured...

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Bibliographic Details
Published in:Journal of guidance, control, and dynamics control, and dynamics, 2020-12, Vol.43 (12), p.2391-2398
Main Authors: Grauer, Jared A, Boucher, Matthew J
Format: Article
Language:English
Subjects:
Aircraft
Engineers
Fourier analysis
Identification
Numerical Analysis
Simulation
System identification
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Summary:The identification of aircraft flight dynamics is often performed using frequency responses, which are nonparametric models that quantify the steady-state magnitude and phase of a dynamic system response to sinusoidal inputs, as a function of frequency. Frequency responses are computed from measured input and output data, and then model parameters, such as stability and control derivatives, are estimated to best fit a parametric model to the empirical frequency response data. The utility of this approach is due to the familiarity of engineers with frequency responses, a number of theoretical and practical advantages under specific conditions, the availability of software packages, and many other reasons.
ISSN:0731-5090
1533-3884
1533-3884
DOI:10.2514/1.G005131