Self-Balancing Foot Platform Constraints in Two-Wheel EVs
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Solution Overview
Problem
Existing two-wheeled electric vehicles face challenges in maintaining structural balance and stability due to the relative rotation of foot platforms, which can impact other components and structures.
Innovation Solution
The electric vehicle design incorporates rotatable foot platforms connected by tubular support shafts with axial and rotational constraint mechanisms, sensors for detecting platform rotation, and controllers for motor control, ensuring balanced operation through self-balancing algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the first foot platform and second foot platform are allowed to rotate relative to each other for self-balancing, then the vehicle's adaptability and playability are improved, but the structural stability and reliability deteriorate due to potential impacts on other components
Solution Approach 1:
The patent divides the foot platform system into independent rotatable segments (first foot platform and second foot platform) that can rotate relative to each other around a central axis. This segmentation allows each platform to be independently controlled for self-balancing while maintaining overall structural integrity through the modular design.
Solution Approach 2:
The patent applies rotational constraints specifically at the connection between foot platforms and the central axis, while other parts of the structure maintain fixed connections. This localized constraint approach allows rotation where needed for balance control while preserving structural stability in other critical areas.
2Ease of operation
If rotational freedom is provided for balance control, then the ease of operation is improved, but the device complexity increases due to additional constraint mechanisms
Solution Approach 1:
The patent replaces complex mechanical constraint mechanisms with sensor-based detection and electronic control systems. Position sensors detect the rotational state of foot platforms, and controllers automatically adjust motor outputs to maintain balance, eliminating the need for complex mechanical stoppers or guides.
Solution Approach 2:
The system uses self-balancing control where the vehicle automatically adjusts its own posture through sensor feedback and motor control without requiring external intervention. The controllers continuously monitor position sensor data and adjust wheel torques to maintain balance, making the system self-regulating.
Data Source
AI summary
Disclosed is an electric vehicle. The electric vehicle includes: a first foot platform, a second foot platform, a first wheel, a second wheel, a first tubular support shaft, a second tubular support shaft, a first sensor, a second sensor, at least one controller, a power source, an axial constraint mechanism, and a rotational constraint mechanism. The rotational constraint mechanism includes a first rotational constraint member disposed on the first foot platform and a second rotational constraint member disposed on the second foot platform, wherein the first rotational constraint member and the second rotational constraint member are configured to cooperate to limit a relative rotation angle between the first foot platform and the second foot platform.