UAV Wall Suction Control via Pressure Feedback
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Solution Overview
Problem
Conventional unmanned aerial vehicles (UAVs) experience instability during the approach and departure phases when transitioning between flying and stationary states, potentially leading to collisions or crashes while suctioned to a wall surface, as the suction force control is inadequate in these phases.
Innovation Solution
The UAV is equipped with a thrust generating part, a suction device, and a control device that utilizes suction state detecting parts, such as pressure sensors, and wall surface detecting sensors to manage the suction and departure operations, ensuring stable attachment and detachment from the wall surface by controlling the thrust generating part based on real-time sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction fan rotation speed is controlled based on pressure sensor detection, then the suction force is maintained stably in stationary state, but the operation becomes unstable in approach and departure phases
Solution Approach 1:
The control system dynamically adjusts the suction fan rotation speed based on the operational phase (approach, stationary, or departure). During approach and departure phases, the system modifies the suction force differently than in stationary state, enabling stable transitions while maintaining reliable suction when attached to the wall surface.
Solution Approach 2:
The system uses pressure sensor detection to provide feedback on suction state, and the control device processes this information to adjust the suction fan rotation speed appropriately for each operational phase, ensuring both stability during attachment and controllability during transitions.
2Reliability
If the suction part is suctioned to the wall surface, then the main unit can be attached securely, but collision with wall surface or crash may occur during transition phases
Solution Approach 1:
The control device initiates appropriate suction force adjustments before actual contact with the wall surface during approach phase, and prepares for departure by modulating suction force in advance, preventing collisions and crashes through proactive control actions.
Solution Approach 2:
The system provides cushioning control by gradually adjusting the suction fan rotation speed during transition phases, preventing sudden impacts with the wall surface and reducing crash risk through smooth, controlled force modulation.
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
This configuration allows for secure and stable suction and departure from the wall surface, preventing collisions and crashes by maintaining attitude stability and ensuring reliable vacuum suction and release operations.
Implementation Method 1
a suction device that has a suction part and is fixed to the main unit... configured to stick to the wall surface by vacuum suction
Implementation Method 2
the suction state detecting part is a pressure sensor that detects pressure inside the suction part
Data Source
AI summary
An unmanned aerial vehicle includes a main unit having a thrust generating part for flying in air, a suction device that has a suction part and is fixed to the main unit, and a control device that controls operations of the thrust generating part and the suction device such that the suction part is configured to be suctioned to a wall surface by the operation of the suction device to allow the main unit to be attached to the wall surface, wherein a suction state detecting part that detects a suction state of the suction part, is provided, and the control device controls the operation of the thrust generating part based on a detection by the suction state detecting part in suction phase and/or departure phase of the main unit with respect to the wall surface.