Friction-Compensation Control of Gas-Flow Regulation for Ducted Rockets Based on Adaptive Dither Method

AbstractIn this paper, the friction generated in gas-flow regulation of ducted rockets is considered, and a compensation method is discussed to eliminate its effect. First, the dynamic mathematic model of gas flow–regulating system considering friction is established and analyzed. Then, the mechanis...

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Published inJournal of aerospace engineering Vol. 26; no. 4; pp. 715 - 720
Main Authors Chang, Juntao, Li, Bin, Bao, Wen, Niu, Wenyu, Yu, Daren
Format Journal Article
LanguageEnglish
Published American Society of Civil Engineers 01.10.2013
Subjects
Adaptive control systems
Compensation
Control
Dithers
Dynamical systems
Friction
Mathematical models
Rockets
Technical Papers
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Summary:AbstractIn this paper, the friction generated in gas-flow regulation of ducted rockets is considered, and a compensation method is discussed to eliminate its effect. First, the dynamic mathematic model of gas flow–regulating system considering friction is established and analyzed. Then, the mechanism of friction-compensation method based on additional dither signal is proposed, and the compensation loop with adaptive-amplitude dither signal is added to the original system to overcome the effect of the varied friction. The simulation results show the validation of the adaptive dither signal in solving the problems caused by the variable friction in gas-regulation system of ducted rockets.
Bibliography:ObjectType-Article-1
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ISSN:0893-1321
1943-5525
DOI:10.1061/(ASCE)AS.1943-5525.0000202