NDLI: Frequency identification of helicopter for flight control design

Content Provider	IEEE Xplore Digital Library
Author	Lv Mingyun Liu Peng Meng Zhijun
Copyright Year	2010
Description	Author affiliation: Beijing University of Aeronautics and Astronautics, 100191, China (Lv Mingyun; Liu Peng; Meng Zhijun)
Abstract	A frequency identification method of helicopter for flight control design is presented. The overall concept is to extract a complete set of non-parametric input-to-output frequency responses that fully characterizes the coupled helicopter dynamics, partial coherence analysis is used to eliminate the inter-axis coupling, and conduct a nonlinear search for a transfer function model that matches the frequency-response data set. Each major element of the procedure is reviewed. A new method for combining the results of multi-input frequency-response analyses obtained from a range of spectral windows into a single optimized response is presented. This method significantly improves the dynamic range and accuracy of the identified frequency-response relative to single window methods. The accuracy of the identified model is verified by comparing the model-predicted responses with the responses collected during flight experiments.
Starting Page	1207
Ending Page	1211
File Size	477051
Page Count	5
File Format	PDF
ISBN	9781424462636
e-ISBN	9787894631046
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-29
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Chinese Association of Aut
Subject Keyword	Helicopter Composite Windows Atmospheric modeling Helicopters Coherence Computational efficiency Aircraft propulsion Partial Coherence Analysis Aerospace control Frequency Identification
Content Type	Text
Resource Type	Article

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