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Robust active control against wind-induced structural vibrations

Stavroulakis, G.E. / Marinova, D.G. / Hadjigeorgiou, E. / Foutsitzi, G. / Baniotopoulos, C.C.

Slender flexible structures are vulnerable to vibrations under wind loads. The dynamic model of a frame-like structure is obtained by finite element approximation in this paper and used further for the design of an active control mechanism. The behavior of the structure is described by simplified linear equations. A linear quadratic regulator and an H₂ optimal control method are used for the suppression of the extended vibration effects. Structured uncertainties are considered to reflect the errors between the model and the reality. To accommodate directly the plant uncertainties and to obtain a best possible performance in the face of uncertainties a robust H_infinity optimal control for active control structure is used. The two latter robust controllers take into account as well incompleteness of the measured information, a fact that cannot be neglected in civil engineering, and lead to applicable designs of smart structures. The numerical simulation shows that vibrations can be suppressed by means of the proposed methods.

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Robust active control against wind-induced structural vibrations

Stavroulakis, G.E. / Marinova, D.G. / Hadjigeorgiou, E. / Foutsitzi, G. / Baniotopoulos, C.C.

Slender flexible structures are vulnerable to vibrations under wind loads. The dynamic model of a frame-like structure is obtained by finite element approximation in this paper and used further for the design of an active control mechanism. The behavior of the structure is described by simplified linear equations. A linear quadratic regulator and an H₂ optimal control method are used for the suppression of the extended vibration effects. Structured uncertainties are considered to reflect the errors between the model and the reality. To accommodate directly the plant uncertainties and to obtain a best possible performance in the face of uncertainties a robust H_infinity optimal control for active control structure is used. The two latter robust controllers take into account as well incompleteness of the measured information, a fact that cannot be neglected in civil engineering, and lead to applicable designs of smart structures. The numerical simulation shows that vibrations can be suppressed by means of the proposed methods.

Robust active control against wind-induced structural vibrations

Stavroulakis, G.E. / Marinova, D.G. / Hadjigeorgiou, E. / Foutsitzi, G. / Baniotopoulos, C.C.

Slender flexible structures are vulnerable to vibrations under wind loads. The dynamic model of a frame-like structure is obtained by finite element approximation in this paper and used further for the design of an active control mechanism. The behavior of the structure is described by simplified linear equations. A linear quadratic regulator and an H₂ optimal control method are used for the suppression of the extended vibration effects. Structured uncertainties are considered to reflect the errors between the model and the reality. To accommodate directly the plant uncertainties and to obtain a best possible performance in the face of uncertainties a robust H_infinity optimal control for active control structure is used. The two latter robust controllers take into account as well incompleteness of the measured information, a fact that cannot be neglected in civil engineering, and lead to applicable designs of smart structures. The numerical simulation shows that vibrations can be suppressed by means of the proposed methods.

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Title:

Robust active control against wind-induced structural vibrations

Additional title:

Eine robuste aktive Regelung gegen windinduzierte Bauwerks-Schwingungen

Contributors:

Stavroulakis, G.E. (author) / Marinova, D.G. (author) / Hadjigeorgiou, E. (author) / Foutsitzi, G. (author) / Baniotopoulos, C.C. (author)

Published in:

Journal of Wind Engineering and Industrial Aerodynamics ; 94 ; 895-907

Publication date:

2006

Size:

13 Seiten, 8 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.jweia.2006.06.012

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

robuste Regelung , optimale Regelung , Finite-Elemente-Methode , lineare Gleichung , Steuerungs- und Regelungssystem , Steuereinrichtung , Rechnersimulation , mechanische Schwingung , linearquadratischer Regler , Bauwerk , Bauingenieurwesen , Schwingungsanregung , Wind (Meteorologie) , Modellsimulation , Bewegungskompensation , aktive Steuerung und Regelung , H-2-Regelung , H-unendlich-Regelung , Schwingungsverhalten , Fehlerbetrachtung , Versuchsergebnis , mathematisches Modell , elastische Schwingung , Eigenfrequenz , dynamisches Verhalten , Aerodynamik , aktive Regelung , Rahmentragwerk

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