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FIN AND RUDDER CONTROL SYSTEM FOR ROLL STABILISATION

Masami Hamamoto, Tadatsugi Okazaki

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Abstract

The dynamics and control of sway and yaw motions of a ship with combined fin-rudder control system are discussed. In this system, a multivariable controller is used to take into account sway, roll and yaw motions induced by deflections of rudder as well as stabilising fin for course-keeping and roll stabilisation of a ship in quartering seas. A simulation study was carried out to make the comparison between fin, rudder and combined fin-rudder control systems. In addition, self-running model tests in still water were carried out to ensure that simulation results were in good agreement with the experimental results.

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What this paper is about

The dynamics and control of sway and yaw motions of a ship with combined fin-rudder control system are discussed. In this system, a multivariable controller is used to take into account sway, roll and yaw motions induced by deflections of rudder as well as stabilising fin for course-keeping and roll stabilisation of a ship in quartering seas. A simulation study was carried out to make the comparison between fin, rudder and combined fin-rudder control systems. In addition, self-running model tests in still water were carried out to ensure that simulation results were in good agreement with the experimental results.

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Available abstract

The dynamics and control of sway and yaw motions of a ship with combined fin-rudder control system are discussed. In this system, a multivariable controller is used to take into account sway, roll and yaw motions induced by deflections of rudder as well as stabilising fin for course-keeping and roll stabilisation of a ship in quartering seas. A simulation study was carried out to make the comparison between fin, rudder and combined fin-rudder control systems. In addition, self-running model tests in still water were carried out to ensure that simulation results were in good agreement with the experimental results.

Key concepts: Rudder, Fin, Marine engineering, Control theory (sociology), Engineering, Controller (irrigation), Control system, Aileron

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