Ball-Caster Drive Layout for Tall Robot Tipping Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Autonomous mobile robots, particularly tall ones, are prone to tipping over due to their high center of gravity, which can be caused by obstacles or intentional tipping, disrupting their functionality.
Innovation Solution
A stabilizing drive system incorporating ball casters positioned at the corners of the robot base, in addition to drive wheels, to lower the center of gravity and enhance stability, allowing the robot to navigate over and around obstacles without tipping.
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 adding ball casters at the corners of the robot base that extend below the main body. These ball casters act as counterbalancing elements that lower the center of gravity and provide stabilizing contact points with the ground, preventing the tall robot from tipping over while maintaining its extended sensing capabilities
2Reliability
If the robot is made taller to improve obstacle detection, then the robot's sensing capability is improved, but the robot is more easily tipped by obstacles and tripping
Solution Approach 1:
The ball casters function as counterweights positioned at the corners of the base, extending below the robot's main body. This configuration lowers the center of gravity and creates stable pivot points that prevent tipping when the robot encounters obstacles or trips, thereby maintaining reliable obstacle detection capability
Solution Approach 2:
The ball casters provide beforehand cushioning by being pre-positioned at the corners of the base below the main body. They create a stable foundation that cushions against tipping forces before they can cause the robot to fall, allowing the robot to safely navigate obstacles without compromising its detection reliability
3Stability of the object's composition
If ball casters are added to stabilize the robot, then the robot's stability is improved, but the device complexity increases
Solution Approach 1:
The patent employs spherical ball casters instead of traditional wheeled casters. The spherical shape allows for omnidirectional movement and self-adjusting contact with the ground, providing stable support while reducing mechanical complexity. The balls can rotate freely within their sockets, adapting to various terrain angles without requiring complex steering mechanisms
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 provides enhanced stability, enabling tall robots to tilt up to 45° without falling, and maintain balance with at least two ball casters on the ground, effectively preventing tipping and improving obstacle navigation.
Implementation Method 1
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
Implementation Method 2
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.