Marine Propulsion Speed Control with Timed Operator Override
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Solution Overview
Problem
Existing marine propulsion systems struggle to allow vessel users to temporarily operate the hull as intended despite controls adjusting speed based on hull movement during waves, necessitating a structure that enables intended operation regardless of upward-downward hull movement.
Innovation Solution
A marine propulsion system with a controller that temporarily cancels the in-wave vessel speed control mode for a predetermined period when an operator is activated, allowing the vessel user to override the control, and automatically returns to the control mode after the period elapses or based on predefined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If in-wave vessel speed control is continuously performed to adjust vessel speed based on upward-downward hull movement, then hull stability and safety are improved, but vessel user operational freedom deteriorates
Solution Approach 1:
The control system dynamically switches between automatic in-wave vessel speed control mode and manual operation mode based on user input. When the operator operates the operator device, the system temporarily transitions from automatic control to manual control, allowing the vessel user to override the automatic speed adjustment when needed, while automatically returning to automatic control after a predetermined period or when specific conditions are met.
2Ease of operation
If in-wave vessel speed control mode is canceled completely when operator is activated, then operational freedom is improved, but system complexity increases due to mode switching management
Solution Approach 1:
The control system implements periodic action by automatically returning to the in-wave vessel speed control mode after a predetermined period of time following manual operation, or when specific conditions are satisfied. This periodic re-engagement of automatic control ensures that the system does not remain in manual mode indefinitely, balancing operational freedom with automated safety control while managing mode transitions systematically.
Data Source
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AI summary
A marine propulsion system (100) includes a controller (14) configured or programmed to temporarily cancel an in-wave vessel speed control mode, in which an in-wave vessel speed control is performed to adjust a vessel speed (V) based on information (Ia) regarding upward-downward movement of a hull (10) when waves are occurring, for a predetermined period of time (t) when an operator (30) is operated to temporarily cancel the in-wave vessel speed control mode in the in-wave vessel speed control mode.