Watercraft Trim System Adaptive Nozzle Control
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Solution Overview
Problem
Existing trim systems for watercraft lack the ability to automatically adjust the trim angle based on operating conditions, such as speed and load, which can affect the watercraft's performance and maneuverability.
Innovation Solution
A trim system that includes sensors to monitor operating conditions and a control unit that adjusts the nozzle's pivot range based on detected conditions, switching between a first and second trim control mode depending on thresholds, allowing for adaptive trim angle adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the trim angle is increased to improve top speed and playfulness, then the watercraft can achieve higher speeds and easier maneuvers at low speeds, but the watercraft becomes less maneuverable and more difficult to control at high speeds
Solution Approach 1:
The trim system dynamically adjusts the trim angle based on operating conditions (speed, load, riding style) rather than maintaining a fixed trim position. The control unit receives input signals from sensors monitoring watercraft speed, motor speed, and rider preferences, then automatically pivots the nozzle to optimal trim angles, enabling the system to adapt between high-speed performance and low-speed maneuverability
Solution Approach 2:
The system changes the trim angle parameter based on detected operating conditions. When speed exceeds a threshold, the control unit limits the maximum trim angle to maintain stability at high speeds. When speed is below the threshold, the system allows greater trim angle ranges for enhanced playfulness and low-speed maneuverability, optimizing performance across different operating regimes
2Ease of operation
If the trim angle is reduced to improve maneuverability and responsiveness at speed, then the watercraft becomes more responsive to steering inputs and easier to control, but the watercraft loses top speed performance and playfulness
Solution Approach 1:
The trim system dynamically adjusts the trim angle based on operating conditions (speed, load, riding style) rather than maintaining a fixed trim position. The control unit receives input signals from sensors monitoring watercraft speed, motor speed, and rider preferences, then automatically pivots the nozzle to optimal trim angles, enabling the system to adapt between high-speed performance and low-speed maneuverability
Solution Approach 2:
The system changes the trim angle parameter based on detected operating conditions. When speed exceeds a threshold, the control unit limits the maximum trim angle to maintain stability at high speeds. When speed is below the threshold, the system allows greater trim angle ranges for enhanced playfulness and low-speed maneuverability, optimizing performance across different operating regimes
3Adaptability or versatility
If the trim system provides a wide range of trim angles for adaptability to various riding conditions, then the watercraft can adapt to different loads and preferences, but the device complexity increases
Solution Approach 1:
The trim system operates autonomously by monitoring its own operating conditions through sensors (watercraft speed, motor speed) and automatically adjusting the trim angle without requiring manual intervention. The control unit compares sensor inputs against predefined thresholds and rider preferences, then self-adjusts the nozzle position to optimal trim angles, reducing the need for complex manual control interfaces
Solution Approach 2:
The system continuously monitors operating conditions through sensors and uses this feedback to automatically adjust trim angles. The control unit receives real-time data on watercraft speed, motor speed, and rider preferences, compares this against optimal parameters, and automatically pivots the nozzle to maintain optimal performance across varying riding conditions, simplifying the user interface while maintaining high adaptability
Data Source
AI summary
A trim system for a watercraft has a nozzle pivotable about a trim axis, a trim actuator operatively connected to the nozzle, at least one sensor for sensing at least one operating condition of the watercraft, a control unit electronically connected to the at least one sensor for receiving a sensor input signal indicative of the at least one operating condition. In a first trim control mode, the control unit controls the trim actuator to pivot the nozzle about the trim axis within a first range of trim angles. In a second trim control mode, the control unit controls the trim actuator to pivot the nozzle about the trim axis within a second range of trim angles. The first range of trim angles is greater than the second range of trim angles. A watercraft having a trim system and a method of controlling the trim are also disclosed.