Outboard Engine Propeller Attitude Control for Hull Stability
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Solution Overview
Problem
Existing hull attitude control systems increase manufacturing costs and weight to prevent hull shaking, which hampers energy efficiency during anchorage.
Innovation Solution
A hull attitude control apparatus incorporating an outboard engine with a propeller and electric motor, an inclination angle control system, and state detection sensors to dynamically adjust propeller thrust and orientation to counteract hull movement, minimizing additional mechanisms and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a stabilization fin is provided on the hull to prevent shaking, then hull stability is improved, but manufacturing costs and weight are increased
Solution Approach 1:
The patent replaces the traditional mechanical stabilization fin with an electric motor-driven propeller system that generates thrust forces to counteract hull shaking. The propeller, driven by an electric motor, produces controlled thrust forces in opposite directions to stabilize the hull, eliminating the need for heavy mechanical fins and reducing overall system weight.
Solution Approach 2:
The patent changes the operational parameters by using variable speed control of the propeller to dynamically adjust thrust forces. The controller varies the rotation speed of the propeller based on detected hull motion, enabling adaptive stabilization without the fixed structural additions required by traditional stabilization fins.
2Stability of the object's composition
If a stabilization fin is provided on the hull to prevent shaking, then hull stability is improved, but manufacturing costs are increased
Solution Approach 1:
The patent makes the outboard engine serve multiple functions: it provides both propulsion and stabilization. The same propeller and motor used for moving the boat are controlled to generate stabilizing thrust forces, eliminating the need for separate stabilization components and reducing manufacturing costs.
Solution Approach 2:
The patent replaces expensive mechanical stabilization fins with a controlled electric motor and propeller system that uses software control and sensor feedback to achieve stabilization, reducing manufacturing costs while maintaining effectiveness.
3Stability of the object's composition
If additional mechanisms are provided to prevent hull movement, then hull stability is improved, but energy efficiency is reduced
Solution Approach 1:
The patent makes the outboard engine serve multiple functions: it provides both propulsion and stabilization. The same propeller and motor used for moving the boat are controlled to generate stabilizing thrust forces, eliminating the need for separate stabilization components and reducing manufacturing costs.
Solution Approach 2:
The stabilization system uses the boat's own outboard engine to counteract shaking, rather than requiring an external power source or separate stabilization system. The electric motor and propeller generate stabilizing forces using the boat's existing powertrain, improving energy efficiency.
Data Source
AI summary
A hull attitude control apparatus (1) includes: an outboard engine (3) that includes a propeller (12) which is provided on a hull (2) and generates a thrust force at the hull (2) and a propeller drive motor (9) which drives the propeller (12); an attitude control portion (4) that controls an inclination angle of a propeller rotation axis line (S2); an outboard engine control portion (20) that performs a drive control of the propeller drive motor (9); and a shake detection sensor that detects a shake of the hull (2). The attitude control portion (4) and the outboard engine control portion (20) perform a drive control of the propeller (12) so as to prevent shaking of the hull (2) based on a detection result of the shake detection sensor.