Robust aeroelastic control of flapped wing systems using a sliding mode observer

Sungsoo Na, Liviu Librescu, Myung Hyun Kim, In Joo Jeong, Pier Marzocca

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


The performance of a robust control strategy applied to a three-degrees-of-freedom (3-DOF) flap-wing aeroelastic system impacted by a pressure pulse in the subcritical flight speed regime is investigated. The goal of its implementation is to suppress flutter instability and reduce the vibrational level in the subcritical flight speed range. To this end, the linear quadratic Gaussian (LQG) control methodology in conjunction with a sliding mode observer (SMO) are used. Comparisons with the counterpart results obtained via implementation of LQG controller with conventional Kalman filter (KF) are also provided and pertinent conclusions are outlined.

Original languageEnglish
Pages (from-to)120-126
Number of pages7
JournalAerospace Science and Technology
Issue number2
Publication statusPublished - 2006 Mar

Bibliographical note

Funding Information:
Sungsoo Na acknowledges the support of this work by the Basic Research Program of the Korea Science and Engineering Foundation, Grant No. R01-2002-000-00129-0.


  • Blast load
  • Flapped wing
  • Kalman filter
  • Robust aeroelastic control
  • Sliding mode observer

ASJC Scopus subject areas

  • Aerospace Engineering


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