Robust Switching Control and Subspace Identification for Flutter of Flexible Wing
Joint Authors
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-26
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
Active flutter suppression and subspace identification for a flexible wing model using micro fiber composite actuator were experimentally studied in a low speed wind tunnel.
NACA0006 thin airfoil model was used for the experimental object to verify the performance of identification algorithm and designed controller.
The equation of the fluid, vibration, and piezoelectric coupled motion was theoretically analyzed and experimentally identified under the open-loop and closed-loop condition by subspace method for controller design.
A robust pole placement algorithm in terms of linear matrix inequality that accommodates the model uncertainty caused by identification deviation and flow speed variation was utilized to stabilize the divergent aeroelastic system.
For further enlarging the flutter envelope, additional controllers were designed subject to the models beyond the flutter speed.
Wind speed was measured online as the decision parameter of switching between the controllers.
To ensure the stability of arbitrary switching, Common Lyapunov function method was applied to design the robust pole placement controllers for different models to ensure that the closed-loop system shared a common Lyapunov function.
Wind tunnel result showed that the designed controllers could stabilize the time varying aeroelastic system over a wide range under arbitrary switching.
American Psychological Association (APA)
Wang, Yizhe& Xu, Zhiwei& Li, Wei. 2018. Robust Switching Control and Subspace Identification for Flutter of Flexible Wing. Shock and Vibration،Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215573
Modern Language Association (MLA)
Wang, Yizhe…[et al.]. Robust Switching Control and Subspace Identification for Flutter of Flexible Wing. Shock and Vibration No. 2018 (2018), pp.1-16.
https://search.emarefa.net/detail/BIM-1215573
American Medical Association (AMA)
Wang, Yizhe& Xu, Zhiwei& Li, Wei. Robust Switching Control and Subspace Identification for Flutter of Flexible Wing. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215573
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215573