An optimal autopilot for ships using a regressive exogenous model

Tran, Van-Long; Nguyen, Huu Thanh; Hoang, Thi-Xuan; Nguyen, T.-M.-H.; Cu, Xuan-Thinh; Nguyen, Van-Chung

doi:10.1109/iscit.2004.1413852

Cited by 2 publications

(1 citation statement)

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“…The change in hull resistance affects the travel direction and speed of the ship; thus, continuous control is required to maintain the speed and direction of travel. Consequently, changes occur in the amount of power supplied to power-consuming equipment [28], such as steering equipment [29,30] and auxiliary blowers of the main engine [31] installed on the ship. The second factor is weather conditions.…”

Section: Introductionmentioning

confidence: 99%

Multiple Feature Extraction Long Short-Term Memory Using Skip Connections for Ship Electricity Forecasting

Kim,

2023

JMSE

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The power load data of electric-powered ships vary with the ships’ operational status and external environmental factors such as sea conditions. Therefore, a model is required to accurately predict a ship’s power load, which depends on changes in the marine environment, weather environment, and the ship’s situation. This study used the power data of an actual ship to predict the power load of the ship. The research on forecasting a ship’s power load fluctuations has been quite limited, and the existing models have inherent limitations in predicting these fluctuations accurately. In this paper, A multiple feature extraction (MFE)-long short-term memory (LSTM) model with skip connections is introduced to address the limitations of existing deep learning models. This novel approach enables the analysis and forecasting of the intricate load variations in ships, thereby facilitating the prediction of complex load fluctuations. The performance of the model was compared with that of a previous convolutional neural network-LSTM network with a squeeze and excitation (SE) model and deep feed-forward (DFF) model. The metrics used for comparison were the mean absolute error, root mean squared error, mean absolute percentage error, and R-squared, wherein the best, average, and worst performances were evaluated for both models. The proposed model exhibited a superior predictive performance for the ship’s power load compared to that of existing models, as evidenced by the performance metrics: mean absolute error (MAE) of 55.52, root mean squared error of (RMSE) 125.62, mean absolute percentage error (MAPE) of 3.56, and R-squared (R2) of 0.86. Therefore, the proposed model is expected to be used for power load prediction during electric-powered ship operations.

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Section: Introductionmentioning

confidence: 99%