Three-Motor Wheel Assembly for Multi-Axis Ground Adaptation
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Solution Overview
Problem
Conventional mobility vehicle wheel assemblies are limited by their inability to adapt to varying ground environments, restricting their travel capabilities.
Innovation Solution
A wheel assembly with a driving module that includes three motors: a first motor for axial rotation, a second motor for radial rotation, and a third motor for steering, allowing for multiple degrees of freedom and adaptability to external factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional single-motor wheel assembly is used, then the structure is simple, but the adaptability to varying ground environments is limited
Solution Approach 1:
The wheel assembly is segmented into three independent motor units, each responsible for a specific degree of freedom: the first motor controls rotation about the first rotation axis, the second motor controls rotation about the second rotation axis, and the third motor controls steering about the third rotation axis. This segmentation allows each motor to independently handle specific motion requirements, enabling adaptation to various ground environments while maintaining manageable structural complexity through modular design
Solution Approach 2:
The wheel assembly implements dynamic adaptability by enabling the wheel to rotate about multiple rotation axes (first rotation axis for forward rotation, second rotation axis for lateral rotation, and third rotation axis for steering). This dynamic capability allows the wheel to adjust its orientation and movement direction in real-time based on ground conditions, transforming a static single-axis rotation system into a dynamic multi-axis system that can cope with changing external environments
2Ease of operation
If a wheel assembly with multiple degrees of freedom is implemented, then the mobility and flexibility are improved, but the device complexity increases
Solution Approach 1:
Each motor unit in the wheel assembly is designed with multi-functionality to reduce overall system complexity. The first motor provides both propulsion and contributes to orientation control, the second motor enables both lateral movement and orientation adjustment, and the third motor handles both steering and directional control. This multi-functional design allows each component to serve multiple purposes, improving mobility and flexibility while avoiding the need for additional dedicated components for each function
Data Source
AI summary
A wheel assembly includes a wheel, and a driving module connected to the wheel. The driving module includes a first motor defining a first rotation axis extending in an axial direction of the wheel, and that rotates the wheel about the first rotation axis, a second motor defining a second rotation axis spaced apart from the first rotation axis in a radial direction of the wheel, and that rotates the wheel about the second rotation axis, and a third motor that provides a driving force for steering the wheel about a third rotation axis extending in a direction crossing the first rotation axis and the second rotation axis. When a direction crossing the second rotation axis and the third rotation axis is a first direction, the third motor is disposed to be spaced apart from the third rotation axis in the first direction.