Sliding mode robust control of supersonic three degrees-of-freedom airfoils

Bok Hee Lee, Jeong Hwan Choo, Sungsoo Na, Piergiovanni Marzocca, Liviu Librescu

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The robust aeroelastic control of a three-degrees-of-freedom (3DOF) linear and non-linear wing-flap system under sliding mode control (SMC) and operation in supersonic flight speeds is presented. Open- and closed-loop aeroelastic responses to blast and sonic-boom excitation in the wingflap system with uncertainty, as well as flutter analysis, are investigated along with the implementation of a Sliding Mode Observer (SMO). The effectiveness of control in reducing the amplitude of oscillation and preventing flutter instability is demonstrated.

Original languageEnglish
Pages (from-to)279-288
Number of pages10
JournalInternational Journal of Control, Automation and Systems
Issue number2
Publication statusPublished - 2010 Apr

Bibliographical note

Funding Information:
Manuscript received December 11, 2008; revised July 25, 2009; accepted October 23, 2009. Recommended by Editorial Board member Hyo-Choong Bang under the direction of Editor Jae Weon Choi. The authors would like to acknowledge the late Professor Liviu Librescu of Virginia Tech, who help, guide and support through the years have made this research possible. He will be remembered and deeply missed. S. Na also acknowledges the financial support from KOSEF (No. 2009-0063170).


  • 3DOF airfoil system
  • Aeroelasticity
  • Sliding mode control
  • Sliding mode observer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications


Dive into the research topics of 'Sliding mode robust control of supersonic three degrees-of-freedom airfoils'. Together they form a unique fingerprint.

Cite this