Robotic Vehicle Stabilizing Drive Layout for Tip Resistance
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Solution Overview
Problem
Autonomous mobile robots face instability issues, particularly when tall, as they are prone to tipping over due to their height, which can be caused by obstacles or intentional tipping, leading to a loss of functionality.
Innovation Solution
A stabilizing drive system is implemented using a robot body base with at least two drive wheels and a plurality of ball casters positioned to lower the center of gravity, providing additional stability and allowing the robot to maintain balance even when tilted significantly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the robot is made taller to improve sensing distance and obstacle detection, then the robot's ability to see and sense obstacles is improved, but the robot becomes more prone to tipping over
Solution Approach 1:
The patent applies counterweight by positioning heavy components (battery, motor, processing system) in the lower portion of the robot body, specifically in the base section below the taller sensor mast. This creates a low center of gravity that counteracts the toppling moment generated by the tall structure, allowing the robot to maintain stability while achieving extended sensing range.
2Device complexity
If the robot uses a conventional drive wheel system, then the driving mechanism is simple, but the robot loses traction and stability when encountering obstacles or being tilted
Solution Approach 1:
The patent segments the drive system into multiple independent contact points: conventional drive wheels for primary propulsion and additional stabilizing wheels/casters positioned at corners or along the base perimeter. This segmentation allows different wheels to independently maintain contact with the ground when the robot encounters obstacles or tilts, ensuring continuous traction and stability without requiring a completely complex alternative drive system.
3Stability of the object's composition
If the robot lowers its center of gravity to improve stability, then the robot's resistance to tipping is improved, but the robot's ability to navigate obstacles may be reduced
Solution Approach 1:
The patent implements dynamic adaptability by equipping the robot with independently controllable stabilizing wheels that can adjust their position and engagement based on terrain conditions. When navigating flat surfaces, the low center of gravity provides inherent stability. When encountering obstacles, the control system can actively engage the stabilizing wheels to maintain contact with the ground, dynamically adapting the robot's stance to preserve both stability and obstacle-navigating capability.
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 system effectively prevents tipping by distributing weight and allowing the robot to navigate obstacles without losing traction, enabling stable operation even when tilted up to 45° or more, reducing the likelihood of tipping and maintaining functionality.
Implementation Method 1
a plurality of ball casters within the robot body base, wherein the ball caster are positioned relative to the robot base and to the at least two drive wheels so as to lower a center of gravity of the robot and provide stabilization of the driving
Data Source
AI summary
An apparatus, system and method capable of providing a stabilizing drive system for a robotic vehicle. The apparatus, system and method may include at least a robot body base; at least two drive wheels within the robot body base; a processing system having non-transitory computing code associated therewith which, when executed by the processing system, causes to be driven the at least two drive wheels; and a plurality of ball casters within the robot body base, wherein the ball caster are positioned relative to the robot base and to the at least two drive wheels so as to lower a center of gravity of the robot and provide stabilization of the driving.