Smooth-switching LPV control for vibration suppression of a flexible airplane wing
| Autor: | Guoming G. Zhu, Tianyi He, Weihua Su, Sean Shan-Min Swei |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Smoothness Computer science Aerospace Engineering 02 engineering and technology Flight control surfaces Function (mathematics) Covariance 01 natural sciences Stability (probability) 010305 fluids & plasmas Vibration 020901 industrial engineering & automation Control theory 0103 physical sciences Convex optimization Parametric statistics |
| Zdroj: | Aerospace Science and Technology. 84:895-903 |
| ISSN: | 1270-9638 |
| Popis: | In this paper, active vibration suppression of a Blended-Wing-Body flexible airplane wing is studied by utilizing a smooth-switching linear parameter-varying (LPV) dynamic output-feedback control. For the reduced-order LPV models, developed for each divided flight envelop subregion, a family of mixed Input Covariance Constraint and H ∞ LPV controllers are designed to robustly suppress the wing bending displacement using hard-constrained control surfaces, while achieving smooth-switching between adjacent controllers. The proposed LPV controllers are developed by minimizing a combination of weighted H 2 output performance and smoothness index, subject to a set of Parametric Linear Matrix Inequalities derived from stability and performance conditions. In addition, the weighting coefficient in the cost function is tuned to balance between H 2 performance and switching smoothness by iteratively solving convex optimization problems. Simulation results demonstrate that simultaneous smooth-switching and improved performance can be achieved by the proposed LPV control. |
| Databáze: | OpenAIRE |
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