Multi-Platform Brake Testing for Multi-Axle Vehicle Stability
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Solution Overview
Problem
Existing systems for checking the braking capacity of multi-axle vehicles, including composite vehicles like those with trailers, struggle to provide intuitive stability indices and effectively manage the complex dynamics of braking, particularly in emergency conditions, due to the additional degrees of freedom and force distribution complexities.
Innovation Solution
A method using multiple pairs of force detection platforms to measure and process forces in dynamic conditions, calculating simplified parameters such as the center of gravity and center of forces to provide intuitive stability indices and detect potential instability or lurching effects, displayed on a console for easy user understanding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple pairs of force detection platforms are used to measure forces in dynamic conditions, then the precision of braking capacity assessment is improved, but the complexity of the system increases
Solution Approach 1:
The system divides the vehicle braking assessment into multiple measurement segments by using several pairs of force detection platforms positioned at different locations. Each platform pair measures forces on specific wheels or axles independently, allowing comprehensive assessment of the entire braking system through integration of segmented measurements.
Solution Approach 2:
The force detection platforms serve as intermediary devices between the vehicle braking system and the assessment system. These platforms detect and transmit force data from the wheels to the processing unit, enabling indirect measurement of braking capacity without directly interfering with the vehicle's operation.
2Ease of operation
If simplified parameters such as center of gravity and center of forces are calculated, then the ease of operation is improved, but the measurement precision may be reduced
Solution Approach 1:
The system transforms complex force distribution data into simplified stability parameters (center of gravity position, center of forces, stability indices) that are easier to interpret. This parameter transformation maintains essential information while presenting it in a more accessible format for operators.
Solution Approach 2:
The system creates simplified representations (copies) of the complex braking dynamics through calculated parameters like center of gravity and center of forces. These parameter copies capture the essential stability characteristics without requiring users to analyze the full complexity of the original force data.
3Reliability
If the system detects forces on multiple pairs of platforms to determine dynamic behaviour, then the reliability of braking assessment is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The measurement system is segmented into multiple independent platform pairs, each responsible for detecting forces on specific portions of the vehicle. This segmentation allows the complex task of measuring overall vehicle braking forces to be divided into manageable local measurements that can be integrated to provide comprehensive reliable assessment.
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 effective assessment of braking capacity and stability for both single and composite multi-axle vehicles, providing clear indicators of potential issues like yaw skid and unbalance, thereby enhancing safety during braking.
Implementation Method 1
a plurality of pairs of force detection platforms, on which the forces between the wheels and the resting plane of multi-axle vehicles passing over them in a decelerated dynamic motion are detected
Data Source
AI summary
A multi-platform system and a brake checking method for a braking capacity of a vehicle with at least two wheel axles is disclosed. The system comprises pairs of detection platforms aligned according to a direction of movement on two parallel paths, spaced apart by a distance related to the wheelbase of a vehicle, each detection having at least a resting surface configured with detection and measuring means apt to detect at least a horizontal and vertical component of a stress applied by the vehicle wheels to such surfaces, as well as at least a checking unit which detects the trend over time of said at least a horizontal and vertical component of the stress said at least a checking unit having data processing means apt to integrate in time said at least a horizontal component and vertical component for each wheel of said wheel axles.