Outboard Motor Lateral Control With Hull Roll Reduction
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Solution Overview
Problem
Boats equipped with outboard motors experience discomfort due to hull rolling during lateral movement, which is also known as horizontal oscillation or rolling, and there is a need for improved lateral movement control to reduce this issue.
Innovation Solution
A lateral movement control method that generates a propulsion force using outboard motors and executes a roll reduction process, including adjusting trim tabs, output, and operation to reduce the roll angle of the hull during lateral movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hull is moved laterally based on power of the outboard motor, then the operability in narrow spaces is improved, but the hull rolls causing discomfort to users
Solution Approach 1:
The system applies preliminary anti-action by detecting the roll angle during lateral movement and generating a counteracting propulsion force through the outboard motor to offset the rolling effect before it becomes severe, thereby reducing user discomfort while maintaining lateral movement capability
Solution Approach 2:
The system changes operational parameters by adjusting the outboard motor's propulsion force based on detected roll angle conditions, dynamically modifying the motor output to minimize hull rolling while preserving the ability to move laterally in narrow spaces
2Speed
If the outboard motor generates propulsion force for lateral movement, then the boat can move sideways, but the roll angle increases
Solution Approach 1:
The system implements feedback control by continuously detecting the roll angle during lateral movement and using this information to adjust the outboard motor's propulsion force, creating a closed-loop control system that maintains hull stability while enabling lateral movement
Solution Approach 2:
The system applies dynamics by making the outboard motor's propulsion force adjustable and responsive to real-time conditions, allowing the motor output to be dynamically modified based on roll angle detection to balance lateral movement performance with hull stability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively reduces the roll angle of the hull during lateral movement, enhancing user comfort and operational stability.
Implementation Method 1
generating a propulsion force to laterally move the hull based on an output from the outboard motor
Implementation Method 2
executing a roll reduction process to reduce a roll angle of the hull at a time of laterally moving the hull
Data Source
AI summary
In a boat including a hull, when the hull is moved laterally based on an output from the outboard motor, the hull rolls, which may cause discomfort to a user or passengers. To compensate for this, a lateral movement control method for the boat including the hull and the outboard motor includes generating a propulsion force to laterally move the hull with the output of the outboard motor, and executing a roll reduction process to reduce a roll angle of the hull at a time of laterally moving the hull.