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Sliding mode robust control of supersonic three degrees-of-freedom airfoils |
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| Authors: | Bok-Hee Lee Jeong-hwan Choo Sungsoo Na Piergiovanni Marzocca Liviu Librescu |
| Affiliation: | 1. Department of Mechanical Engineering, Korea University, 136-701, Seoul, Korea 2. Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY, 13699-5725, USA 3. Department of Engineering and Mechanics, Virginia Polytechnic and State University, Blacksburg, VA, 24061, USA |
| Abstract: | 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 wing-flap 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. |
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