UAV Arm Reconfiguration for Center of Gravity Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face stability issues due to changes in their center of gravity, which current control methods struggle to address effectively, relying heavily on angular velocity adjustments that can lead to reduced stability and increased component wear.
Innovation Solution
A controller system for UAVs that adjusts the length of arms extending from the central body to reposition propulsion units relative to the center of gravity, using sensors and processors to determine necessary changes in arm length and angular velocity to maintain stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only angular velocity of rotors is adjusted to counter center of gravity changes, then the UAV can respond to gravity changes, but flight stability deteriorates and component wear increases
Solution Approach 1:
The arm length is made dynamically adjustable during flight to adapt to center of gravity changes. The controller modifies the physical configuration of the UAV by extending or retracting arms, allowing the system to dynamically reposition propulsion units and counteract gravity shifts without relying solely on rotor angular velocity adjustments.
2Reliability
If rotor angular velocity is increased significantly to counter center of gravity changes, then the UAV can maintain position, but component wear increases and battery power is consumed
Solution Approach 1:
The system dynamically adjusts arm length to reposition propulsion units, thereby maintaining UAV position with minimal rotor angular velocity changes. This dynamic reconfiguration reduces the energy required for position maintenance compared to relying solely on high angular velocity adjustments.
Solution Approach 2:
The physical parameter of arm length is changed to alter the position of propulsion units relative to the center of gravity. By modifying this geometric parameter, the system achieves position maintenance with reduced rotor speed requirements, thereby conserving battery power.
3Adaptability or versatility
If rotor angular velocity is significantly adjusted to counter center of gravity changes, then the UAV can respond to gravity shifts, but component wear increases
Solution Approach 1:
The arm length is dynamically adjusted to adapt to center of gravity changes, allowing the UAV to respond to gravity shifts without relying on significant rotor angular velocity changes. This dynamic reconfiguration reduces mechanical stress and wear on rotor components.
Solution Approach 2:
The geometric parameter of arm length is modified to reposition propulsion units, enabling the system to respond to center of gravity changes with minimal rotor speed adjustments. This reduces the wear on rotor components while maintaining adaptability.
Data Source
AI summary
A method of controlling an unmanned aerial vehicle includes receiving a first signal including information relating to a payload of the unmanned aerial vehicle, retrieving a predetermined value from a memory of the unmanned aerial vehicle based on the information of the first signal, and generating a second signal for changing a configuration of an arm of the unmanned aerial vehicle to change a distance of at least one of a plurality of propulsion units of the unmanned aerial vehicle corresponding to the arm from a reference point on a central body of the unmanned aerial vehicle based on the predetermined value.