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Design of Dynamic Sliding Mode Controller to roelastic Systems |
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PP: 89-98 |
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Author(s) |
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Chieh-Li Chen,
Chung-Wei Chang,
Her-Terng Yau,
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Abstract |
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| It is well known that for the model with a single trailing-edge control surface, trajectory control of either
the plunge displacement or the pitch angle (but not of both) can be achieve by the controller design and there exist
internal dynamics describing the residual motion in aeroelastic closed-loop systems. The internal dynamics of
aeroelastic depend on the model parameters including the free stream velocity and spring constant. Motivated by the
limited effectives of using single control surface, improvements in control of limit-cycle oscillation by using leadingand
trailing-edge control surface are investigated. Moreover, two control surfaces provide flexibility in shaping both
the plunge and the pitch responses. This study uses the dynamic sliding mode control (DSMC) to achieve system
stability and eliminate the phenomenon of limit cycle response. Compared to the conventional sliding mode control
design, the proposed control law preserves not only the robustness of the system but also avoids chattering
phenomenon. Simulation results are presented which show that these controllers are effective in regulating the
response to origin in state space in spite of controller input with saturation. |
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