Advances in gyro-stabilisation of vessel roll motion

Perez, Tristan & Steinmann, Paul (2008) Advances in gyro-stabilisation of vessel roll motion. In Proceedings of the International Maritime Conference, Pacific 2008, Royal Institution of Naval Architects ( RINA ), Sydney, Australia, pp. 682-692.

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The use of gyro-dynamic forces to counteract the wave-induced roll motion of marine vessels in a seaway was proposed over 100 years ago. These early systems showed a remarkable performance, reporting roll reductions of up to 95% in some sailing conditions. Despite this success, further developments were not pursued since the systems were unable to provide acceptable performance over an extended envelope of sailing and environmental conditions, and the invention of fin roll stabilisers provided a satisfactory alternative. This has been attributed to simplistic controls, heavy drive systems, and large structural mass required to withstand the loads given the low strength materials available at the time. Today, advances in material strength, bearings, motor technology and mechanical design methods, together with powerful signal processing algorithms, has resulted in a revitalized interest in gyro-stabilisers for ships. Advanced control systems have enabled optimisation of restoring torques across a range of wave environments and sailing conditions through adaptive control system design. All of these improvements have resulted in increased spinning speed, lower mass, and dramatically increased stabilising performance. This brief paper provides an overview of recent developments in the design and control of gyro-stabilisers of ship roll motion. In particular, the novel Halcyon Gyro-Stabilisers are introduced, and their performance is illustrated based on a simulation case study for a naval patrol vessel. Given the growing national and global interest in small combatants and patrol vessels, modem gyro-stabilisers may offer a significant technological contribution to the age old problem of comfort and mission operability on small ships, especially at loiter speeds.

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ID Code: 78270
Item Type: Conference Paper
Refereed: Yes
Keywords: Adaptive controls, Advanced control systems, Design and controls, Drive systems, Dynamic forces, Environmental conditions, Marine vessles, Material strengths, Mechanical design methods, Motor technologies, Naval Patrols, Optimisation, Patrol vessels, Roll motions, Sailing conditions, Ship roll motions, Signal processing algorithms, Spinning speed, Stabilisation, Structural mass
ISBN: 9781605604596
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2008 Please consult the Authors
Deposited On: 03 Nov 2014 00:45
Last Modified: 04 Nov 2014 04:09

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