Underwater Thruster Control for High-Power Uplift Against Drag
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Solution Overview
Problem
Conventional underwater thrusters face challenges in overcoming water flow resistance, particularly during the uplift phase near the water surface, leading to slow uplift speeds that can pose safety risks to divers.
Innovation Solution
A method for controlling an underwater thruster that involves obtaining specific control parameters for an ultra-high power mode, allowing the thruster to increase its operating current and motor revolutions, thereby enhancing its power output to overcome water flow resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional gears are used in the underwater thruster, then the device complexity is reduced and ease of operation is maintained, but the power output is insufficient to overcome water flow resistance during uplift
Solution Approach 1:
The patent applies dynamics by making the gear selection variable rather than fixed. The control system dynamically switches between first gear (high speed, low power) and second gear (low speed, high power) based on real-time operational needs. This allows the thruster to adapt its power output to match varying water flow conditions during underwater operations, particularly during uplift phases where high power is needed to overcome resistance.
Solution Approach 2:
The patent changes the operational parameters of the motor by switching between different gear configurations. The control system adjusts motor speed and current parameters dynamically - operating at higher speed with lower current in first gear, and lower speed with higher current in second gear. This parameter switching enables the thruster to deliver different power levels without requiring a completely different mechanical design.
2Speed
If the underwater thruster operates at high power to overcome water flow resistance, then the uplift speed improves, but the energy consumption increases
Solution Approach 1:
The control system dynamically adjusts the gear selection based on real-time operational conditions. During normal cruising, the system operates in first gear with lower energy consumption. When uplift is detected or required, the system switches to second gear to provide high power for rapid ascent. This dynamic adaptation ensures high speed when needed while minimizing energy consumption during less demanding phases of operation.
Solution Approach 2:
The patent employs periodic switching between gear modes based on the operational cycle. The thruster alternates between low-power cruising mode (first gear) and high-power uplift mode (second gear) according to the periodic nature of diving operations. This periodic action pattern allows the system to achieve high uplift speeds when required while spending more time in energy-efficient operation during stable phases.
3Adaptability or versatility
If multiple gears are provided for different output powers, then the adaptability to different operating conditions improves, but the device complexity increases
Solution Approach 1:
The patent achieves adaptability through dynamic control rather than static mechanical complexity. The system uses electronic control to switch between two gear configurations, allowing the same physical hardware to adapt to different operational requirements. The control system monitors operational conditions and dynamically selects the appropriate gear, providing versatility without requiring complex mechanical switching mechanisms or multiple permanently engaged gear sets.
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 enables the underwater thruster to operate at higher power levels, significantly improving uplift speeds and ensuring safer underwater operations by instantly increasing output power when needed.
Implementation Method 1
obtaining a current control parameter and/or a motor control parameter corresponding to an ultra-high power mode when entering the ultra-high power mode; and controlling an operating current of the underwater thruster according to the current control parameter, and/or controlling motor revolutions of the underwater thruster
Data Source
AI summary
Disclosed are a method of controlling an underwater thruster, an underwater thruster and a computer-readable storage medium. The control method includes: obtaining a current control parameter and/or a motor control parameter corresponding to an ultra-high power mode when entering the ultra-high power mode; and controlling an operating current of the underwater thruster according to the current control parameter, and/or controlling motor revolutions of the underwater thruster to rotate in a preset mode according to the motor control parameter to control the underwater thruster to operate in the ultra-high power mode. By providing the ultra-high power mode on the underwater thruster, the underwater thruster can output ultra-high power, overcome the problem of slow uplift due to the influence of water flow resistance in the process of underwater operation, and achieve the effect of enhancing the uplift speed.