Personal Mobility Rear Wheel Spacing Adjustment
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Solution Overview
Problem
Personal mobility devices with one front wheel and a pair of rear wheels face challenges in driving safety and performance due to varying external environments and user states, such as road conditions and user age or object handling.
Innovation Solution
A personal mobility system with a pair of rear wheels that adjusts its distance based on external environment and user state information, using an actuator and image data device to control the spacing, and a support device to separate the wheels from the ground for adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between the pair of rear wheels is increased to improve driving safety for elderly users or on curved roads, then the stability and safety are improved, but the turning radius and maneuverability worsen
Solution Approach 1:
The patent implements dynamic adjustment of the rear wheel distance through an actuator that can change the spacing between the pair of rear wheels based on detected road conditions and user characteristics. The controller receives image data from the image data device, determines road curvature and user age, and automatically adjusts the wheel baseline distance to optimize both safety and maneuverability for different operating conditions.
2Reliability
If the distance between the pair of rear wheels is increased to improve stability on curved roads, then the driving performance on curved roads is improved, but the device complexity increases
Solution Approach 1:
The system transforms a static wheel configuration into a dynamic one by introducing an actuator controlled by a controller that processes image data from the environment. This allows the wheel distance to be automatically adjusted based on detected road curvature, improving driving performance on curved roads while managing complexity through automated control.
Solution Approach 2:
The personal mobility device performs self-adjustment of the rear wheel distance by automatically detecting road conditions through the image data device and controlling the actuator without requiring manual user intervention. The system serves itself by autonomously optimizing its configuration based on environmental feedback.
3Adaptability or versatility
If the rear wheels are separated from the ground using the support device to enable adjustment, then the adjustability is improved, but the device complexity and potential instability increase
Solution Approach 1:
The support device enables dynamic reconfiguration of the personal mobility device by allowing the rear wheels to be separated from the ground during adjustment operations. This creates a dynamic state where the wheel distance can be modified, and the support device provides the necessary mechanical assistance to achieve this reconfiguration.
Data Source
AI summary
A personal mobility and a control method are provided. The personal mobility includes: a main body; a front wheel mounted on the front end of the main body; a pair of rear wheels mounted on the rear end of the main body; an actuator configured to adjust a distance between the pair of rear wheels; an image data device mounted on the personal mobility and having a field of view outside of the personal mobility, the image data device configured to acquire image data; and a controller configured to determine at least one of user state information or external environment information based on the image data, and control the actuator to adjust the distance between the pair of rear wheels based on at least one of the user state information or the external environment information.