Hull Steering Control for Predicted Wave Impact Avoidance
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Solution Overview
Problem
Existing hull behavior control systems for marine vessels fail to effectively reduce damage and improve crew comfort when navigating waves, as they often result in excessive impact forces due to riding waves and capsizing risks.
Innovation Solution
A hull behavior control system that uses a combination of sensors, machine learning models, and a steering mechanism to estimate wave movement and control the vessel's direction, avoiding wave crests by generating an optimum route to minimize wave influence, thereby reducing impact forces and improving comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the steering device is controlled so that the bow or stern of the hull faces the waves, then the hull stability is improved, but the hull may ride high waves and suffer excessive impact force when falling onto the water
Solution Approach 1:
The system performs preliminary detection of wave conditions using sensors (laser radar, stereo cameras) and predicts wave movement patterns before the vessel encounters them. This advance information allows the control system to prepare appropriate steering adjustments to avoid riding high waves, thereby preventing excessive impact forces when the hull falls onto the water while maintaining stability.
Solution Approach 2:
The system continuously monitors wave conditions using sensors and feeds this information back to the control unit, which adjusts the steering device in real-time. This closed-loop feedback mechanism enables the system to respond dynamically to changing wave conditions, maintaining optimal hull orientation to face waves without riding them, thus balancing stability with impact force reduction.
2Reliability
If the hull is controlled to face waves with bow or stern, then capsizing risk is reduced, but damage to the hull from wave impact remains significant
Solution Approach 1:
The system detects wave conditions in advance using laser radar and stereo cameras, predicting wave movement patterns before the vessel encounters them. This preliminary detection allows the control system to adjust the hull orientation proactively to face waves appropriately, preventing capsizing while avoiding the condition of riding high waves that would cause excessive impact damage and compromise hull integrity.
Solution Approach 2:
The control unit continuously receives feedback from sensors about wave conditions and hull behavior, dynamically adjusting the steering device to maintain optimal orientation. This real-time feedback ensures the hull faces waves correctly to prevent capsizing while avoiding excessive impact forces that could damage the hull structure.
3Stability of the object's composition
If the vessel sails with bow facing waves to prevent capsizing, then stability is improved, but crew comfort deteriorates due to excessive impact
Solution Approach 1:
The system performs advance detection of wave conditions using sensors and predicts wave movement patterns before the vessel encounters them. This preliminary information allows the control system to adjust the vessel orientation proactively to face waves appropriately, maintaining stability while avoiding the scenario where the vessel rides high waves and creates excessive impact forces that would discomfort the crew.
Solution Approach 2:
The system continuously monitors wave conditions and vessel behavior, providing real-time feedback to the control unit which adjusts the steering device accordingly. This feedback mechanism maintains optimal vessel orientation to face waves, ensuring stability while minimizing impact forces that would affect crew comfort.
Data Source
AI summary
A hull behavior control system for controlling behavior of a hull of a marine vessel includes a memory and at least one controller coupled to the memory. The at least one controller is configured or programmed to control a steering that changes the traveling direction of the marine vessel, obtain a water surface shape around the marine vessel, estimate movement of a wave based on the water surface shape, and when it is determined that the hull rides the wave whose movement has been estimated, control the steering so as to reduce an influence of the wave on the hull.