Nonlinear Dynamic Inversion of a Flexible Aircraft

Ryan James Caverly, Anouck R. Girard, Ilya V. Kolmanovsky, James Richard Forbes

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper investigates the use of dynamic inversion for the attitude control of a flexible aircraft. Input-output feedback linearization-based dynamic inversion is used to linearize the angular velocity and forward translational velocity equations of motion. A proportional-integral-derivative (PID) controller based on the direction cosine matrix (DCM) that describes the attitude of the aircraft is used, in addition to a proportional-integral (PI) controller to maintain a desired airspeed. Numerical simulations are performed using the proposed dynamic inversion controller, as well as more practical implementations of the controller that include saturated control inputs and no knowledge of the aircraft's flexible states. In simulation, the practical controllers successfully stabilize a flexible aircraft with reasonable control surface deflections.

Original languageEnglish (US)
Pages (from-to)338-342
Number of pages5
JournalIFAC-PapersOnLine
Volume49
Issue number17
DOIs
StatePublished - 2016
Externally publishedYes

Keywords

  • Dynamic inversion
  • PID control
  • aircraft control
  • feedback linearization
  • flexible wings
  • saturation control

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