Ship Maneuvering System with Trim Adjuster and Stability Control
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Solution Overview
Problem
Existing ship maneuvering systems experience changes in traveling state due to the operation of trim adjusters, such as trim tabs and interceptors, which can alter the ship's direction and attitude, leading to resistance and instability.
Innovation Solution
A ship maneuvering system that includes a propulsion unit, a trim adjuster, and a controller programmed to correct changes in the ship's traveling state by steering the propulsion unit in response to the operation of the trim adjuster, using sensors to detect attitude and position data to adjust the steering angle and reduce or prevent changes in the ship's direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the trim adjuster is operated to change the attitude of the ship body, then the lift force is generated on the ship body, but resistance is generated in the trim adjusting portion causing changes in traveling state
Solution Approach 1:
The controller detects the operation of the trim adjuster and proactively generates a counteracting steering command for the propulsion unit before the traveling state change fully occurs. This preliminary anti-action compensates for the resistance effect, preventing the harmful traveling state change while maintaining the desired attitude control function.
Solution Approach 2:
The system continuously detects the traveling state parameters (position, orientation, speed) and the trim adjuster operation status, then uses this feedback information to dynamically adjust the propulsion unit steering angle. This closed-loop feedback mechanism ensures that the counteracting steering action is precisely tailored to compensate for the resistance generated by the trim adjuster operation.
2Adaptability or versatility
If the trim adjuster is activated to alter ship attitude, then the traveling direction changes due to resistance, but this causes instability in the traveling state
Solution Approach 1:
The controller detects the trim adjuster operation and proactively generates a counteracting steering command for the propulsion unit before the traveling state change fully occurs. This preliminary anti-action compensates for the resistance effect, preventing the harmful traveling state change while maintaining the desired attitude control function.
Solution Approach 2:
The system continuously detects the traveling state parameters (position, orientation, speed) and the trim adjuster operation status, then uses this feedback information to dynamically adjust the propulsion unit steering angle. This closed-loop feedback mechanism ensures that the counteracting steering action is precisely tailored to compensate for the resistance generated by the trim adjuster operation.
3Reliability
If the propulsion unit steering is adjusted to correct traveling state changes, then the stability is maintained, but the system complexity increases
Solution Approach 1:
The control functions for the propulsion unit and trim adjuster are merged into a single integrated control system. The controller simultaneously manages both components, detecting trim adjuster operations and automatically generating compensating propulsion steering commands. This merging reduces overall system complexity by eliminating the need for separate control systems while maintaining traveling state 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 system effectively reduces or prevents changes in the ship's traveling state by dynamically adjusting the propulsion unit's steering angle based on real-time data from sensors, maintaining stability and direction during trim adjuster operations.
Implementation Method 1
a propulsion unit 5 to steer a ship body 3
Implementation Method 2
a lift force is generated on the ship body by swinging the trim tab from the ship body toward the water surface and contacting the trim tab with the water
Data Source
AI summary
A ship maneuvering system includes a propulsion unit to steer a ship body, a trim adjuster disposed on the ship body, and a controller. The controller is configured or programmed to correct a change in the traveling state of the ship body due to operation of the trim adjuster.