Frequency Responses Identification from Multi-axis Multisine Manoeuvre

Piotr Lichota , Mark Tischler , Joanna Szulczyk , Tom Berger

Abstract

The 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.
Author Piotr Lichota (FPAE / IAAM)
Piotr Lichota,,
- The Institute of Aeronautics and Applied Mechanics
, Mark Tischler - [U.S. Army Aviation and Missile Research, Development and Engineering Center]
Mark Tischler,,
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, Joanna Szulczyk (FPAE / IAAM)
Joanna Szulczyk,,
- The Institute of Aeronautics and Applied Mechanics
, Tom Berger - [U.S. Army Aviation and Missile Research, Development and Engineering Center]
Tom Berger,,
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Pages1-18
Publication size in sheets0.85
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 Englishflight dynamics, system identification
DOIDOI:10.2514/6.2019-1322
URL https://arc.aiaa.org/doi/pdf/10.2514/6.2019-1322
Languageen angielski
Score (nominal)5
ScoreMinisterial score = 5.0, 23-09-2019, MonographChapterAuthor
Publication indicators Scopus Citations = 0
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