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- W4385437598 abstract "A sliding mode predictive anti-pitching control considering appendages constraints is proposed to improve the wave suppression capability of multihulls while reducing heave and pitch motions. The control method combines the advantages of model predictive control and sliding mode control to both improve the strong robustness of the system and to ensure the optimization and the ability to handle constraints explicitly. The vertical motion model is established for multihull with two types of appendages, T-foils and flaps, to achieve anti-pitching. According to the characteristics of the first-order autoregressive wave disturbance model, a low-complexity disturbance observer is devised to estimate the wave disturbance force and moment online, and combine the estimates with the prediction model to enhance the accuracy of the prediction. On this basis, a prediction model and an objective function are established with the sliding mode states as variables, and the sliding mode terminal stability constraint set is adopted to improve the stability of the closed-loop system. Last, the closed-loop system stability was analyzed based on Lyapunov stability theory. The effectiveness of the designed controller is verified by simulation and experiment, in which the multihull heave displacement is reduced by 52% and the pitch angle is reduced by 58%." @default.
- W4385437598 created "2023-08-01" @default.
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- W4385437598 date "2023-10-01" @default.
- W4385437598 modified "2023-09-27" @default.
- W4385437598 title "A sliding mode predictive anti-pitching control for a high-speed multihull" @default.
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- W4385437598 doi "https://doi.org/10.1016/j.oceaneng.2023.115466" @default.
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