Movable device usable for cleaning and movable device control method
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Solution Overview
Problem
Existing movable devices using lift force and rotors face challenges in controlling posture without altering rotor rotation speed and generate noise due to rotor rotation, while also lacking versatility in force generation for various applications.
Innovation Solution
A movable device with a lift-thrust generation part creating pressure differences between spaces, coupled with supply ducts for fluid suction and discharge, allowing for lift and thrust force generation without controlling rotor speed and enabling operation with various modules like fans or launchers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If rotor rotation speed is controlled to adjust lift force, then lift force generation is improved, but device complexity and noise increase
Solution Approach 1:
The system segments the force generation function by adding supply ducts that can be independently positioned relative to rotors. Each supply duct- rotor combination acts as an independent force generation unit, allowing selective activation and positioning without controlling all rotors uniformly.
Solution Approach 2:
Supply ducts are introduced as intermediary components between the rotors and the environment. These ducts mediate the force generation by being positioned at specific locations to direct fluid flow, enabling posture control without directly controlling rotor rotation speeds.
2Force
If rotor rotation is used to generate lift force, then lift force is generated, but noise is produced
Solution Approach 1:
The noise-generating rotor rotation function is extracted from the force generation process. Instead of using rotor rotation directly for both lift generation and fluid delivery, the system separates these functions by using supply ducts to deliver fluid for force generation while rotors primarily handle fluid intake.
3Productivity
If supply ducts are positioned at the side of rotors, then fluid supply is efficient, but posture control flexibility is reduced
Solution Approach 1:
The supply ducts are designed with dynamic positioning capability, allowing them to move between a first position (aligned with rotor side for efficient fluid supply) and a second position (deviated for posture control). This dynamic repositioning enables the system to adapt to different operational requirements.
4Device complexity
If fixed supply duct configuration is used, then device complexity is reduced, but application versatility is limited
Solution Approach 1:
The movable supply duct configuration enables the device to perform multiple functions beyond basic flight. By adjusting duct positions, the system can optimize for different tasks such as cleaning operations, fluid delivery, and posture control, making the device universally applicable to various scenarios without requiring multiple specialized configurations.
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
Enables posture control without rotor speed adjustments, reduces noise, and allows for flexible force generation suitable for diverse applications such as cleaning, air purification, and ammunition launching.
Implementation Method 1
a lift generating unit configured to generate a pressure difference between opposite sides thereof to generate lift force
Implementation Method 2
a second end that suctions fluid to supply the fluid into the lift generating unit when the lift generating unit is operated
Data Source
AI summary
A movable device includes: at least one lift generating unit for generating a pressure difference between opposite sides thereof to generate a lift force; a movable device body connected to the lift generating unit to be movable by the lift force generated by the lift generating unit; and at least one supply duct, the number of which corresponds to the number of the lift generating unit. One end of the supply duct is disposed on one side of the lift generating unit and, when the lift generating unit operates, fluid is suctioned through the other end of the supply duct to be supplied into the lift generating unit.