Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load
The development of a control strategy appropriate for the suppression of aeroelastic vibration of a two-dimensional nonlinear wing section based on iterative learning control (ILC) theory is described. Structural stiffness in pitch degree of freedom is represented by nonlinear polynomials. The uncon...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/237804 |
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| _version_ | 1849468904040038400 |
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| author | Xing-zhi Xu Ya-kui Gao Wei-guo Zhang |
| author_facet | Xing-zhi Xu Ya-kui Gao Wei-guo Zhang |
| author_sort | Xing-zhi Xu |
| collection | DOAJ |
| description | The development of a control strategy appropriate for the suppression of aeroelastic vibration of a two-dimensional nonlinear wing section based on iterative learning control (ILC) theory is described. Structural stiffness in pitch degree of freedom is represented by nonlinear polynomials. The uncontrolled aeroelastic model exhibits limit cycle oscillations beyond a critical value of the free-stream velocity. Using a single trailing-edge control surface as the control input, a ILC law under alignment condition is developed to ensure convergence of state tracking error. A novel Barrier Lyapunov Function (BLF) is incorporated in the proposed Barrier Composite Energy Function (BCEF) approach. Numerical simulation results clearly demonstrate the effectiveness of the control strategy toward suppressing aeroelastic vibration in the presence of parameter uncertainties and triangular, sinusoidal, and graded gust loads. |
| format | Article |
| id | doaj-art-ff715c2b2ca648778afc7c014ba40c96 |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-ff715c2b2ca648778afc7c014ba40c962025-08-20T03:25:42ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742015-01-01201510.1155/2015/237804237804Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust LoadXing-zhi Xu0Ya-kui Gao1Wei-guo Zhang2School of Automation, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an, Shaanxi 710072, ChinaSchool of Automation, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an, Shaanxi 710072, ChinaSchool of Automation, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an, Shaanxi 710072, ChinaThe development of a control strategy appropriate for the suppression of aeroelastic vibration of a two-dimensional nonlinear wing section based on iterative learning control (ILC) theory is described. Structural stiffness in pitch degree of freedom is represented by nonlinear polynomials. The uncontrolled aeroelastic model exhibits limit cycle oscillations beyond a critical value of the free-stream velocity. Using a single trailing-edge control surface as the control input, a ILC law under alignment condition is developed to ensure convergence of state tracking error. A novel Barrier Lyapunov Function (BLF) is incorporated in the proposed Barrier Composite Energy Function (BCEF) approach. Numerical simulation results clearly demonstrate the effectiveness of the control strategy toward suppressing aeroelastic vibration in the presence of parameter uncertainties and triangular, sinusoidal, and graded gust loads.http://dx.doi.org/10.1155/2015/237804 |
| spellingShingle | Xing-zhi Xu Ya-kui Gao Wei-guo Zhang Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load International Journal of Aerospace Engineering |
| title | Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load |
| title_full | Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load |
| title_fullStr | Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load |
| title_full_unstemmed | Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load |
| title_short | Iterative Learning Control of a Nonlinear Aeroelastic System despite Gust Load |
| title_sort | iterative learning control of a nonlinear aeroelastic system despite gust load |
| url | http://dx.doi.org/10.1155/2015/237804 |
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