UAV Wing Servo Control for Stable Low-Speed Flight
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) with light bodies require a unique flying structure to float above the ground and navigate safely, as they lack the traditional aerodynamic features for stable low-speed flight and collision avoidance.
Innovation Solution
The UAV incorporates a body filled with light gas and wing parts with fin portions, first and second ribs, and servomotors to control the wing movement with a phase difference, allowing for propelling and direction control without additional driving structures, along with sensors for safe route navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the UAV uses a light body structure filled with light gas, then it can float in the air and achieve low-speed flight, but it lacks traditional aerodynamic features for stable flight and collision avoidance
Solution Approach 1:
The patent applies dynamics by making the fin portion movable rather than fixed. The fin portion is connected to the wing part through a rotation axis, allowing it to rotate and adjust its angle dynamically. This dynamic adjustment capability provides aerodynamic stability for the light-body UAV, enabling controlled flight and collision avoidance without requiring a heavy traditional aerodynamic structure.
2Ease of operation
If the UAV uses wing parts with servomotors to control fin portion movement, then it achieves precise direction control, but the device complexity increases
Solution Approach 1:
The fin portion serves multiple functions: it acts as both a propelling surface and a directional control surface. By rotating the fin portion around the rotation axis, the same structure controls both the magnitude and direction of thrust, eliminating the need for separate control surfaces and reducing overall system complexity despite using servomotors.
Solution Approach 2:
The patent merges the propelling function and directional control function into a single fin portion structure. The fin portion is integrated with the wing part and controlled by servomotors to simultaneously achieve propulsion and steering, reducing the number of separate components and simplifying the control system.
3Stability of the object's composition
If the UAV uses phase difference control of first and second ribs, then it achieves stable low-speed flight, but the control system complexity increases
Solution Approach 1:
The patent employs periodic action through phase difference control, where the first and second ribs move in a coordinated oscillating pattern with a specific phase difference. This periodic motion creates stable aerodynamic forces for low-speed flight. The phase difference can be adjusted to optimize flight stability without requiring complex real-time control algorithms.
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 enables stable low-speed flight and safe navigation, minimizing collisions and eliminating the need for additional components, while allowing for easy direction control and stable wing fixation.
Implementation Method 1
an unmanned aerial vehicle, including a body part having an inner space filled with particular gas
Data Source
AI summary
An unmanned aerial vehicle including a body part having an inner space filled with light gas; and a plurality of wing parts mounted on the body part and providing a propelling force. Each of the wing parts includes a fin part having a first rib and a second rib, a first servomotor and a second servomotor connected to one end of the first rib and one end of the second rib, respectively, to move the other end of the first rib and the other end of the second rib in a control angle range; a control unit for controlling the first servomotor and the second servomotor to make the first rib and the second rib move while having a particular phase difference therebetween; and a third servomotor connected to the first servomotor and the second servomotor to rotate the fin part to determine the propelling direction of the body part.