Longitudinal Motion-Sensing Vehicle Control via Reaction Force Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional motion-sensing electric balance vehicles face limitations in speed due to overcurrent risks and lack of directional control, leading to potential safety accidents when users lose balance.
Innovation Solution
A control method and system for a longitudinal motion-sensing two-wheeled vehicle that collects human body posture data to control a motor output via a central processor, using a motor rotor and stator to adjust wheel rotation and provide a reaction force for balance control, allowing users to maintain balance by adjusting their posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the speed of motion-sensing electric balance vehicles is increased beyond 15 yards per hour, then the vehicle performance and efficiency are improved, but overcurrent occurs causing the motherboard to burn out
Solution Approach 1:
The power control is segmented into multiple levels with different current thresholds. The controller divides the speed range into zones, each with specific current limits, allowing the vehicle to operate at higher speeds through controlled current delivery rather than unrestricted power, thus preventing motherboard damage while improving performance
Solution Approach 2:
The system dynamically adjusts current output based on real-time operating conditions. The controller monitors vehicle state and modifies power delivery accordingly, enabling safe operation at higher speeds by adapting current levels to match actual vehicle needs and preventing overcurrent conditions that would damage the motherboard
2Device complexity
If the wheels are disposed on the left and right sides of the human body with the front handle in front, then the vehicle structure is simplified, but the user cannot come down from the balance vehicle in time when losing directional control, causing safety accidents
Solution Approach 1:
The control layout is inverted from the conventional arrangement. Instead of having controls positioned for forward-leaning operation, the system responds to backward-leaning posture changes. This inversion allows users to naturally dismount by leaning back, converting the loss-of-balance scenario into a safe dismounting action while maintaining structural simplicity
Solution Approach 2:
The potential harmful effect of losing directional control is converted into a beneficial safety feature. When users lean back to dismount or lose control, the system interprets this posture change as a dismount command or balance correction, preventing accidents by transforming the dangerous situation into a safe outcome
3Productivity
If the motor outputs higher acceleration and speed, then the vehicle productivity is improved, but the reaction force from the motor stator causes instability in the motion-sensing platform
Solution Approach 1:
The system applies counterbalancing forces to offset the reaction forces generated by the motor. When the motor produces acceleration, the control system activates opposing forces through the motion-sensing platform to neutralize the destabilizing reaction forces, allowing high acceleration without compromising platform stability
Solution Approach 2:
The motion-sensing platform continuously monitors its own stability and feeds this information back to the motor controller. This closed-loop feedback system allows the vehicle to maintain stability during acceleration by automatically adjusting motor output and counterbalancing forces in real-time, resolving the conflict between productivity and stability
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
Enables users to control forward and backward movement, acceleration, and deceleration of the vehicle by adjusting their posture, ensuring safety and stability through real-time negative feedback from the motor stator to the motion-sensing platform.
Implementation Method 1
a motor rotor of the motor outputting a movement vector and an acceleration to control a rotation of wheels under the control of the output of the circuit drive module, a motor stator receiving a reaction force during a rotating and outputting process of the motor rotor
Implementation Method 2
the motion-sensing platform transferring and feeding back the reaction force to a user standing on the motion-sensing platform, thereby adjusting posture data of the motion-sensing platform again by means of a human body posture to achieve a motion-sensing balance control
Implementation Method 3
motion-sensing electric balance vehicles detect the posture change of the vehicle body based on the gyroscope and the acceleration sensor inside the vehicle body
Implementation Method 4
motion-sensing electric balance vehicles detect the posture change of the vehicle body based on the gyroscope and the acceleration sensor inside the vehicle body
Data Source
AI summary
A control method for use with longitudinal motion-sensing two-wheeled vehicles is provided. The control method includes: collecting posture data of a human body leaning forward and backward and controlling an output of a circuit drive module to thereby control a rotational output of a motor; a motor rotor of the motor outputting a movement vector and an acceleration to control a rotation of wheels under the control of the output of the circuit drive module, a motor stator receiving a reaction force during a rotating and outputting process of the motor rotor, and the reaction force being transmitted to a motion-sensing platform through a mechanical structure by the motor stator, and the motion-sensing platform transferring and feeding back the reaction force to a user standing on the motion-sensing platform, thereby adjusting posture data of the motion-sensing platform again by means of a human body posture to achieve a motion-sensing balance control.