Two-Wheel AGV Self-Balancing via Motor Torque and Gravity
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Solution Overview
Problem
Current automatic guided vehicles (AGVs) in robotized manufacturing lack the ability to function independently and in cooperation with each other while maintaining stability and flexibility, especially in dynamic environments, requiring improved navigation and balancing mechanisms.
Innovation Solution
The AGV design incorporates brushless DC motors, tilt sensors, gyroscopic sensors, and a motor control unit with wireless communication, allowing for active stabilization and upright positioning, along with a hitch mechanism for coupling with trailers or other AGVs, ensuring stability and flexibility in navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional AGV designs are used, then the structure is simple, but the AGV cannot maintain upright positioning and lacks stability in dynamic environments
Solution Approach 1:
The patent implements feedback control through tilt sensors and gyroscopic sensors that continuously monitor the AGV's orientation and provide real-time data to the motor control unit. This closed-loop feedback system enables the AGV to detect deviations from upright positioning and automatically correct them by adjusting wheel motor speeds, thereby achieving stable upright positioning without excessive system complexity.
Solution Approach 2:
The AGV employs self-balancing capabilities through integrated sensors and control algorithms that enable the vehicle to autonomously maintain its upright position without external intervention. The system automatically detects tilt angles and rotational movements, then independently adjusts motor outputs to correct positioning, allowing the AGV to serve its own stabilization needs.
2Adaptability or versatility
If AGVs are designed to function independently, then operational flexibility is improved, but coordination and communication between multiple AGVs becomes more complex
Solution Approach 1:
The patent implements a universal wireless communication interface using standard radio frequency transceivers that enable AGVs to operate both independently and in coordinated groups. This multi-functional communication system allows single AGV autonomous operation while simultaneously supporting multi-AGV collaboration through standardized protocols, providing operational flexibility without requiring separate specialized systems for different operating modes.
3Stability of the object's composition
If active stabilization mechanisms are added, then upright positioning is maintained, but energy consumption increases
Solution Approach 1:
The patent employs periodic sensing and control actions where tilt sensors and gyroscopic sensors continuously monitor orientation, and the motor control unit periodically adjusts motor speeds to maintain upright positioning. This periodic control approach balances energy consumption by activating stabilization mechanisms only when needed to correct positioning deviations, rather than maintaining constant high-energy correction.
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
The solution enables AGVs to maintain upright positioning and operate independently and in cooperation with others, enhancing their stability and flexibility in dynamic environments, thus improving their reliability and adaptability in robotized manufacturing systems.
Implementation Method 1
brushless DC motors which can be coupled to the wheels through planetary gears
Implementation Method 2
tilt sensors and/or gyroscopic sensors can be used to detect the angle and rotational movement of the AGV
Implementation Method 3
the motor controller can slow the motors and wheels so that the deceleration force will cause the AGV to rotate about the axis of the wheels to a more upright position
Implementation Method 4
the center of gravity of the AGV can be below the rotational axis so the AGV will normally rotate to an upright position
Data Source
AI summary
An automatic guided vehicles (AGV) can include: motors, wheels, motor controllers, and batteries coupled to an elongated frame. The two wheels can be mounted on opposite sides of the elongated frame. The wheels can be coupled to motors which can be controlled by motor controllers. The motors and motor controllers can be attached to the frame. The center of gravity can be lower than the axis of rotation of the wheels so that the AGV will passively rotated into an upright position. A connector flange can be mounted on top of a payload holder column mounted to a center portion of the AGV frame. Objects can be mounted on or towed by the connector flange.