RL
R.J. Ligthart
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Estimator Design for Minimizing Vertical Motion of Hydrofoil Craft in Ocean Waves
An Optimization-Based Synthesis Methodology
Master thesis
(2026)
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R.J. Ligthart, S.H. Hossein Nia Kani, J.G. Bruining, M.A. Zagorowska, G.J. Verbiest
This paper presents an estimator synthesis methodology that uses an optimization approach to construct estimators which minimize the vertical acceleration response of a hydrofoil craft in ocean waves. The optimal estimator structure is identified, and a fundamental tradeoff between reducing wave-following motion and the required strut height is discovered and characterized. The developed methodology is validated through its application to a scale-model hydrofoil ship, resulting in a reduction of up to 70% in vertical acceleration magnitude compared to the ship's original estimator.
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This paper presents an estimator synthesis methodology that uses an optimization approach to construct estimators which minimize the vertical acceleration response of a hydrofoil craft in ocean waves. The optimal estimator structure is identified, and a fundamental tradeoff between reducing wave-following motion and the required strut height is discovered and characterized. The developed methodology is validated through its application to a scale-model hydrofoil ship, resulting in a reduction of up to 70% in vertical acceleration magnitude compared to the ship's original estimator.