Robust state estimation based on sliding mode observer for aeroelastic system

In Joo Jeong, Sungsoo Na, Myung Hyun Kim, Jae Hong Shim, Byung Young Oh

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This paper concerns the application and demonstration of sliding mode observer for aeroelastic system, which is robust to model uncertainty including mass and stiffness of the system and various disturbances. The performance of a sliding mode observer is compared with that of a conventional Kalman filter to demonstrate robustness and disturbance decoupling characteristics. Aeroelastic instability may occur when an elastic structure is moving even in subcritical flow speed region. Simulation results using sliding mode observer are presented to control aeroelastic response of flapped wing system due to various external excitations as well as model uncertainty and sinusoidal disturbances in subcritical incompressible flow region.

Original languageEnglish
Pages (from-to)540-548
Number of pages9
JournalJournal of Mechanical Science and Technology
Issue number2
Publication statusPublished - 2005 Feb

Bibliographical note

Funding Information:
Sungsoo Na would hke to acknowledge the financial support by a Korea Unlvensty Grant


  • Aeroelastic Response
  • Kalman Filter
  • LQG
  • Sliding Mode Observer
  • State Estimation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering


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