Application of dynamic decoupling fuzzy control method in aircraft gust alleviation

Aijun Li, Jian Tan, Weiguo Zhang, Xun Sun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Dynamic inversion method can not only remove a system's nonlinear factors, but also achieve the system's dynamic decoupling. But its decoupling effect completely depends on the accuracy of the mathematical model of the system. A dynamic decoupling fuzzy control method for MIMO system is presented in this paper, which employs the dynamic inversion method to decouple the multivariable system and introduces a fuzzy controller, without quantification, with correcting function, and expressed in analytic form to overcome the poor decoupling effect when the system model is inaccurate. It is feasible and convenient to compute, tune, and realize the control rules by computer, to adjust the parameters of the controller and to optimize the design of the control system, for the rules are described by analytical expression. The method is adopted to design vertical transition mode of an active control aircraft for gust alleviation. The control laws and simulation diagrams of the system are designed. Simulation results in MATLAB show that the vertical transition mode designed by dynamic decoupling fuzzy control method increases the gust-against effect by about 34% compared with that of a normal aircraft.

Original languageEnglish
Title of host publicationSixth International Symposium on Instrumentation and Control Technology
Subtitle of host publicationSensors, Automatics Measurement, Control, and Computer Simulation
DOIs
StatePublished - 2006
EventSixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control and Computer Simulation - Beijing, China
Duration: 13 Oct 200615 Oct 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6358 I
ISSN (Print)0277-786X

Conference

ConferenceSixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control and Computer Simulation
Country/TerritoryChina
CityBeijing
Period13/10/0615/10/06

Keywords

  • Decoupling
  • Dynamic inversion
  • Fuzzy control
  • Gust alleviation

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