Control of the wave induced vibrations in Air Cushion Catamarans

Author

Bertin, D. ; Bittanti, S. ; Savaresi, S.M.

Author_Institution

Automation & Control Dept., Riva Calzoni S.p.A., Milan, Italy

fYear

1997

fDate

5-7 Oct. 1997

Firstpage

749

Lastpage

754

Abstract

A well known limit of air cushion catamarans is the so called "cobblestone effect", a resonance phenomenon, which is due to the interaction between the ship body and the air cushion dynamics, excited by the incoming waves. The problem of designing a Ride Control System for the attenuation of the wave induced vertical accelerations of a Surface Effect Ship (SES) is considered. It is shown that the damping of two basic resonant modes can be achieved by two independent control loops. Such a decoupled control scheme exploits the intrinsic orthogonality of the two oscillation phenomena.

Keywords

damping; resonance; ships; vibration control; Air Cushion Catamarans; Ride Control System; Surface Effect Ship; attenuation; basic resonant modes; cobblestone effect; damping; decoupled control scheme; incoming waves; independent control loops; intrinsic orthogonality; oscillation phenomena; resonance phenomenon; wave induced vertical accelerations; wave induced vibration control; Automatic control; Automation; Control systems; Frequency; Marine vehicles; Resonance; Sea surface; Seals; Vehicle dynamics; Vibration control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1997., Proceedings of the 1997 IEEE International Conference on

Conference_Location

Hartford, CT, USA

Print_ISBN

0-7803-3876-6

Type

conf

DOI

10.1109/CCA.1997.627749

Filename

627749