Running Vehicle Torque Distribution Control via Acceleration Feedback
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Solution Overview
Problem
Existing vehicle torque distribution systems fail to optimize torque distribution based on actual acceleration, limiting slip reduction and efficiency during acceleration and deceleration.
Innovation Solution
A vehicle system with sensors to measure acceleration and detect absolute position, adjusting torque distribution between front and rear driving wheels based on acceleration, and using feedback control to correct driving torque and eliminate slip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If torque distribution is changed only in accordance with acceleration/deceleration state, then control is simplified, but torque distribution optimization is limited and slip cannot be fully eliminated
Solution Approach 1:
The patent implements feedback control by detecting actual slip conditions through rotation amount sensors and comparing detected rotation amounts with commanded rotation amounts. Based on this feedback, the controller dynamically adjusts torque distribution to front and rear driving wheels, enabling precise slip elimination while maintaining operational simplicity through automated closed-loop control.
Solution Approach 2:
The system dynamically adjusts torque distribution ratios between front and rear driving wheels based on real-time slip detection and acceleration state. The torque distribution is not fixed but continuously adapted to current driving conditions, allowing optimal torque allocation that eliminates slip while maintaining control simplicity through automated adjustment.
2Reliability
If actual acceleration is used for torque control, then torque distribution optimization is improved, but measurement and control complexity increases
Solution Approach 1:
The system uses feedback from acceleration sensors and rotation sensors to continuously monitor actual driving conditions and slip states. This feedback enables precise torque distribution optimization based on real-time acceleration data without requiring complex manual measurement systems, as the control unit automatically processes sensor data to determine optimal torque allocation.
Solution Approach 2:
The control unit serves multiple functions: it processes acceleration sensor data, detects rotation amounts from driving wheels, determines slip conditions, calculates optimal torque distribution ratios, and controls torque application to front and rear wheels. This multi-functionality consolidates complex measurement and control operations into a single control system, reducing overall system complexity while maintaining optimization capability.
3Reliability
If slip detection is not implemented, then system complexity is reduced, but slip elimination and high acceleration performance cannot be achieved
Solution Approach 1:
The patent implements slip detection by comparing commanded rotation amounts with actual rotation amounts detected by sensors. This feedback mechanism enables accurate slip detection without complex mechanical sensors, as the system uses electrical signal comparison between commanded and actual wheel rotations to determine slip conditions and trigger appropriate torque adjustment.
Solution Approach 2:
The system replaces complex mechanical slip detection mechanisms with electrical sensor-based detection. Rotation amount sensors generate electrical signals that are processed by the control unit to detect slip conditions, eliminating the need for mechanical slip detectors while enabling precise slip elimination through electronic control of torque distribution.
Data Source
AI summary
A running vehicle has front and rear driving wheels, and a sensor for measuring the acceleration of the running vehicle. The vehicle determines a distribution rate of torque to each of the driving wheels in accordance with the found acceleration, and changes driving torque to each of the front and rear driving wheels based on the found distribution rate to control driving motors.