Frequency Responses Identification from Multi-axis Multisine Manoeuvre
Piotr Lichota , Mark Tischler , Joanna Szulczyk , Tom Berger
AbstractThe aim of this paper was to determine the possibility of identifying an aircraft excited with simultaneous multi-axis flight control deflections by using frequency response analysis. A nonlinear F-16 aircraft model was excited with multisine inputs applied to aileron and rudder. The inputs and outputs were used later to perform non-parametric identification of frequency responses. From those outcomes a state-space representation was obtained by minimizing magnitude and phase errors for assumed model structure. Direct parametric identification was performed for the same representation to validate the results. For that purpose, Output Error Method with Maximum Likelihood Principle was selected. To check the noise sensitivity the system was also identified for a case when turbulence and measurement noise were taken into account. To validate those results parameter estimation was done also when automated frequency sweeps were used as inputs.
|Publication size in sheets||0.85|
|Book||Cunningham Kevin, Dutta Soumyo (eds.): AIAA Scitech 2019 Forum, 2019, The American Institute of Aeronautics and Astronautics, DOI:10.2514/6.2019|
|Keywords in English||flight dynamics, system identification|
|Score||= 0.0, 11-03-2019, BookMonographyChapterAuthor|
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