IEEE Transactions on Control Systems Technology · 1996 · 71 citations · 8 references
EngineeringMarine EngineeringOcean EngineeringNaval ArchitectureShip ControlShip StabilityAdaptive ControlRoll StabilizationShip DynamicsShip Motion ControlShip Motions In WavesShip VibrationAdaptive Control For ShipsCompensatorsDynamic ModelsLinear-quadratic ControlMultilayer PerceptronNeural Network ControlRoll Control SystemsWave-induced Roll Mitigation
The study proposes two automatically controlled auxiliary wings to attenuate wave‑induced roll on a monohull ship. The wings, variably dipped into the water, generate torque to reduce roll, and the authors developed dynamic models from experimental data and designed two compensators—a classical frequency‑domain controller and an adaptive linear‑quadratic controller using a multilayer perceptron neural network. Simulations and real‑ship experiments confirm the classical controller’s effectiveness, while the adaptive controller demonstrates superior roll‑reduction performance.
In this paper some results regarding the implementation of an automatic roll reduction system for a new monohull ship are presented. To attenuate the roll due to the waves, two auxiliary automatically controlled wings are proposed. These auxiliary wings which are variably dipped into the water introduce a torque that reduces the oscillations of the ship. Dynamic models based on experimental data of the ship, of the hydraulic actuators, and of the disturbances due to the waves are computed, both from physical data and by using identification techniques from experimental measurements. Two different compensators for the roll effect have been designed. The first one was designed by using classical frequency domain techniques, whereas the second was an adaptive linear quadratic compensator. For this compensator, adaptation was performed by using a multilayer perceptron neural network. For the classical controller both simulations and experimental tests performed on the real ship have shown the capabilities of the proposed control system, while for the adaptive controller the results obtained revealed the superior performance that can be reached by using more sophisticated controllers.
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Probabilistic Theory of Ship Dynamics
I Glendenning · Physics Bulletin · 1975 · 154 citations
Rudder roll stabilization for ships
J. van Amerongen, P.G.M. van der Klugt, H.R. van Nauta Lemke · Automatica · 1990 · 128 citations · Full text