Pivot-Connected Mobility Control for Smooth Reverse Steering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric vehicles face limitations with fixedly mounted batteries, requiring improved range and efficient charging solutions, and lack effective methods for controlling mobility devices during reverse steering.
Innovation Solution
Incorporating a replaceable battery and a pivot mechanism to connect additional mobility devices, utilizing controllers to manage power distribution and steering through image processing and torque control for smooth backward driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a battery is fixedly mounted on an electric vehicle, then the power supply system is stable, but the driving range is limited and charging time is long
Solution Approach 1:
The power supply system is segmented into a main battery fixedly mounted on the vehicle and a replaceable battery that can be independently attached and detached. This segmentation allows the replaceable battery to provide additional driving range without requiring the vehicle to return to a charging station, effectively extending operational duration while minimizing time loss.
Solution Approach 2:
The system changes the state of the power supply from a single fixed battery to a configurable combination of main and replaceable batteries. By varying the number and capacity of replaceable batteries attached to the vehicle, the total energy capacity can be dynamically adjusted to match driving range requirements, thereby extending operational duration without proportionally increasing charging time.
2Adaptability or versatility
If multiple mobility devices are connected by a pivot mechanism, then versatility and adaptability are improved, but control complexity during reverse steering increases
Solution Approach 1:
Instead of controlling each mobility device independently during reverse steering, the system inverts the control approach by making the second mobility device actively follow the first mobility device's motion. The controller determines the posture of the second device relative to the first and automatically adjusts the second device's drive motor to maintain proper alignment, simplifying the control logic despite the mechanical complexity of the pivot connection.
Solution Approach 2:
The second mobility device performs reverse steering autonomously based on its detected posture relative to the first device. The controller automatically calculates the required steering angle and actuates the drive motor without requiring manual intervention or complex coordinated control, allowing the system to self-adjust to maintain proper configuration during reverse motion.
3Duration of action of moving object
If a replaceable battery is added to the power system, then driving range is extended, but the power system becomes more complex
Solution Approach 1:
The replaceable battery is designed as a universal power unit that can be attached to various vehicle configurations and positions. It serves multiple functions: extending driving range, providing backup power, and enabling flexible range adjustments without requiring different battery systems for different applications. This multi-functionality justifies the added complexity by providing versatile range extension capabilities.
Data Source
AI summary
A first mobility device includes a plurality of first wheels, a first drive motor providing a driving force to the plurality of first wheels, a first high-voltage battery supplying power to the at least one first drive motor, and a first pivot mechanism, and a second mobility device include a second left wheel, a second right wheel, a second drive motor providing a driving force to the second left wheel and the second right wheel, a second high-voltage battery supplying power to the second drive motor, and a second pivot mechanism. A method of controlling the backward driving of the mobility devices includes determining the backward driving of the first mobility device, determining a posture of the second mobility device with respect to the first mobility device, and controlling the at least one second drive motor according to the posture to perform reverse steering of the second mobility device.