State-space representation of radiation forces in time-domain vessel models

Abstract

The paper presents a method for generating a new and efficient time-domain formulation of the equations of motion for a vessel with frequency-dependent hydrodynamic coefficients. Previous work on this topic has relied on the use of convolution terms, whereas in this work state-space models are used. This leads to a model formulation that is well suited for controller design and simulation.

Keywords

• State-space realization
• Frequency-dependent characteristics
• Time-domain
• Convolution integral