Jet-Propelled Boat Position Control for Fixed-Point Holding
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Solution Overview
Problem
Existing jet-propelled boats lack convenience in handling, particularly in maintaining a fixed position for various operations such as rescue or fishing, and require improved control systems for stable positioning.
Innovation Solution
A jet-propelled boat equipped with a position detection unit, determination unit, and power control unit that allows for a fixed position mode, where the boat's position is maintained within a target range using automatic control, including a power unit, GPS receiver, and electronically controlled steering system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control is used for position maintenance, then the boat can move freely, but the convenience and ease of operation deteriorates when fixed position is required
Solution Approach 1:
The boat performs self-positioning automatically using the control unit that receives position information from the position detection unit and generates control signals to maintain the boat within the target range, eliminating the need for continuous manual intervention
Solution Approach 2:
The system continuously monitors the boat's position through the position detection unit and feeds this information back to the control unit, which adjusts the power unit and steering unit accordingly to maintain the boat within the target range
2Use of energy by moving object
If automatic fixed position control is implemented, then the convenience and fuel efficiency improves, but the device complexity increases
Solution Approach 1:
The control unit continuously receives position information from the position detection unit and adjusts the power unit output accordingly, reducing fuel consumption by only applying power when necessary to maintain position within the target range
Solution Approach 2:
The control unit integrates multiple functions including position monitoring, target range determination, and power/steering control into a single system that serves both navigation and anchoraging purposes
3Stability of the object's composition
If the boat remains stationary for fixed position operations, then the position stability improves, but the productivity and response time deteriorates
Solution Approach 1:
The system dynamically adjusts the boat's position within the target range based on real-time position feedback, allowing the boat to respond to environmental changes while maintaining operational stability for tasks like rescue or fishing
Solution Approach 2:
The automatic control system continuously monitors and adjusts the boat's position without human intervention, maintaining position stability while enabling quick response to changing conditions
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
Enhances convenience by allowing the boat to stay in a fixed position, reducing fuel consumption, and facilitating easy return to the anchor position, thereby expanding its applications and usability.
Implementation Method 1
a power unit (2) that applies a propulsive force to the ship body (10) by injecting water taken in from the water inlet (36) while pressurizing the water
Data Source
AI summary
A jet-propelled boat includes a power unit that applies a propulsive force to a ship body by injecting water taken in from a water inlet while pressurizing the water, a position detection unit that detects a position of the ship body, a determination unit that determines whether or not an operation mode is a fixed position mode, and a power control unit that controls the power unit based on detection information by the position detection unit so that a position of the ship body falls within a target range including a specific anchor position in a case where the determination unit determines that the operation mode is the fixed position mode.