UAV Robotic Arm Decoupling Mechanism for Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing unmanned aerial vehicles (UAVs) lack the dexterity and stability required for precise manipulation tasks, such as targeted pest control in agricultural settings, due to limitations in their robotic arms and control systems.
Innovation Solution
A UAV equipped with a robotic arm that articulates in a vertical plane, featuring an antagonistic actuation mechanism, additional actuators for horizontal movement, and a decoupling mechanism to reduce moment forces, allowing for precise control and increased stability. The UAV also includes a camera and AI system for autonomous operation and target identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a robotic arm is added to the UAV for manipulation tasks, then the UAV's dexterity and functionality are improved, but the UAV's weight and complexity increase
Solution Approach 1:
The robotic arm is designed as a modular system with separate actuators for vertical articulation and horizontal movement, allowing independent control of each degree of freedom. This segmentation enables simplified control architecture and easier maintenance while providing full manipulation capability.
Solution Approach 2:
The robotic arm is designed with a universal mounting interface and standardized actuator connections, allowing the same basic structure to perform multiple manipulation tasks such as pest control, fruit picking, and painting by simply changing the end effector or control parameters.
2Manufacturing precision
If powerful motors are used to overcome moment forces from UAV body rotation, then the robotic arm's positioning accuracy is improved, but the UAV's size and cost increase
Solution Approach 1:
The decoupling mechanism pre-compensates for moment forces generated by UAV body rotation by mechanically isolating the robotic arm's mounting point from rotational movements. This preliminary compensation eliminates the need for oversized motors to correct positioning errors, allowing accurate positioning with smaller, lighter motors.
Solution Approach 2:
A decoupling mechanism acts as an intermediary between the UAV body and the robotic arm mounting, filtering out rotational disturbances before they affect the arm's positioning. This intermediary structure protects the positioning system from external disturbances without requiring additional powerful actuators.
3Stability of the object's composition
If the robotic arm is made more stable for precise tasks, then manipulation precision is improved, but the response speed and agility decrease
Solution Approach 1:
The robotic arm uses independent actuators for vertical articulation and horizontal movement that can be dynamically controlled with different response characteristics. The vertical articulation actuator provides high stability for precise positioning, while the horizontal movement actuator enables rapid repositioning, allowing the system to optimize stability and speed based on task requirements.
Data Source
AI summary
A UAV is disclosed, comprising a robotic arm having an upper arm portion and a lower arm portion configured to articulate relative to each other in a vertical plane. The articulation is remotely actuated, enabling controlled movement of the robotic arm for various tasks. The UAV may further include features such as an antagonistic actuation mechanism, additional actuators for horizontal movement, an end effector for interacting with objects, a camera for detecting targets, and a control system for autonomous operation. A system for autonomous operation may include a station for battery swapping or recharging. Methods of commercially exploiting the UAV, robotic arm, or associated build kits and instructions are also disclosed. The invention is particularly suited for applications where budget-friendly construction is desired, such as in the toy industry, or where many instances of the invention are needed to perform the possible work, such as pest control in agricultural settings. A mechanism for decoupling components from the UAV body's rotation reduces the moment forces that propellers need to overcome for roll and pitch adjustments, allowing for smaller motors and a lighter, safer, and cheaper design.