Rail Vehicle Wear Optimization via Dynamic Driving Control
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Solution Overview
Problem
Current driver assistance systems for rail vehicles do not account for the wear and tear of vehicle components, leading to potential failures and reduced service life, while prioritizing energy efficiency and punctuality.
Innovation Solution
A method and device that determine the state of wear of rail vehicle components and adjust the driving style to optimize wear, punctuality, and energy consumption by controlling speed, acceleration, and deceleration, recommending reduced acceleration and maximum speed when wear is detected, and redistributing braking forces among systems to prevent failures and extend component life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If driver assistance systems optimize for punctuality and energy efficiency, then journey performance is improved, but component wear increases leading to reduced service life
Solution Approach 1:
The driver assistance system dynamically adjusts driving parameters (acceleration, speed, braking) based on real-time component wear status. When wear is detected, the system automatically modifies the driving profile to reduce stress on affected components, transforming a static optimization system into a dynamic one that adapts to changing component conditions.
Solution Approach 2:
The system changes operational parameters (acceleration rates, maximum speed, braking forces) based on detected wear conditions. By monitoring component wear and adjusting driving parameters accordingly, the system reduces mechanical stress on worn components while maintaining acceptable journey performance.
2Reliability
If acceleration and maximum speed are reduced to protect worn components, then component service life is extended, but energy consumption increases
Solution Approach 1:
Instead of uniformly reducing all driving parameters, the system applies partial adjustments only to the extent necessary to protect worn components. The optimization balance dynamically determines the minimum required reduction in acceleration and speed to protect components while minimizing the impact on energy consumption and journey performance.
Solution Approach 2:
The system selectively adjusts driving parameters based on the specific wear conditions detected. By changing parameters only when and where necessary, the system protects worn components while minimizing the overall impact on energy consumption and maintaining acceptable journey performance.
3Reliability
If multiple braking systems are used to compensate for worn brakes, then braking reliability is maintained, but wear on other braking components increases
Solution Approach 1:
The braking system is segmented into multiple independent braking mechanisms (service brakes, emergency brakes, electrodynamic brakes). When one segment (braking system) is worn, the system isolates its function and redistributes the braking load to other segments, allowing the worn component to be protected while maintaining overall braking performance.
Solution Approach 2:
The system temporarily discards the function of the worn braking system and recovers braking capacity by increasing the utilization of alternative braking systems. This allows the worn brakes to rest and prevents further degradation while maintaining the required braking performance through other available systems.
Data Source
AI summary
A method for optimising wear in rail vehicles (10) is described, in which states of wear (16) of at least one component of a rail vehicle (10) are determined, and an optimum driving style (22) for the rail vehicle (10) is determined taking into account the wear (16), punctuality and energy consumption, and the speed, accelerations and decelerations of the rail vehicle (10) are controlled in such a way that the optimum driving style (22) is achieved in a driving mode of the rail vehicle (10). In addition, a device for optimising wear in rail vehicles (10) and a driver assistance system (18) for a rail vehicle (10) are described.