DONNARUMMA , Silvia

It is important that a floating drilling unit is able to disconnect from the wellhead in a timely manner during a loss of position to minimize risk to personnel, the environment, and equipment. For most dynamically positioned (DP) vessels, the concept of watch circles has been used for that purpose. The watch circles define when to initiate...

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Heading and speed control for a patrol vessel is addressed by using simple PID regulators provided with an anti-windup setup. The selection of the PID and anti-windup parameters for both controllers is accomplished by using a decoupled linearized model of the original motion equations and LMIs as a design tool. The effectiveness of the...

One of the best ways to design marine control systems before the construction of a ship is the use of simulation techniques. The paper presents two numerical models used to develop and test, in the preliminary design phase, a dynamic positioning (DP) system for marine vehicles. In particular, it refers to a surface vessel equipped with a...

This paper presents the numerical modelling of a cycloidal propeller in freerunning conditions together with its possible applications. The model calibration is carried out by comparing simulation results with experimental data of an existing cycloidal unit. The achieved results support the main strength of the proposed simulation approach:...

A simulation model of the DP system for a conventional naval configuration is presented. A complete mathematical description of the dynamically positioned vessel is developed, including distinct models for low- and wave-frequency ship motions, slowly-varying wind and wave forces, and mechanical constraints on the actuators. A specific...

Heading and speed control for a patrol vessel is addressed by using simple PID regulators. The selection of the PID parameters for both controllers is accomplished by using decoupled linearized model of the original motion equations and LMIs as a design tool. The effectiveness of the resulting controllers is validated on the original dynamic...