Tire Wear Evaluation Across Completed Driving Processes
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Solution Overview
Problem
Existing methods for determining tire wear values do not accurately account for driving maneuvers that contribute to tire wear, such as transitions from stationary to moving states, leading to inaccuracies in wear value determination.
Innovation Solution
The method involves determining a completed driving process from a starting to a final non-movement state, assigning a further wear value to this process, and using an evaluation device to modify the initial wear value based on factors like steering angles, driving speeds, and topographic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wear value is determined based on vehicle acceleration data, then the determination process is simplified and can be implemented with existing sensors, but driving maneuvers such as transitions from stationary to moving states are disregarded leading to inaccurate wear values
Solution Approach 1:
The driving process is segmented into completed driving processes (from stationary to stationary state) and other driving phases. By identifying and separately evaluating completed driving processes using steering angle data, the method captures wear-relevant maneuvers that acceleration-based methods miss, while maintaining overall system simplicity
Solution Approach 2:
Steering angle data serves as an intermediary parameter to identify completed driving processes. This intermediary allows the system to detect wear-relevant maneuvers without requiring complex sensor setups, bridging the gap between simple acceleration measurement and comprehensive wear analysis
2Measurement precision
If steering angle data is used to calculate additional wear value at low speeds, then some steering maneuvers are captured, but not all steering angle maneuvers are recorded and many driving maneuvers leading to tire wear are still overlooked
Solution Approach 1:
The method merges acceleration-based wear determination with steering angle-based identification of completed driving processes. This combination ensures that all steering maneuvers are captured, not just those at low speeds, eliminating the information loss present in previous approaches
Solution Approach 2:
The evaluation dynamically adjusts by identifying completed driving processes based on steering angle patterns and integrating this with acceleration data. This dynamic approach adapts to various driving conditions and captures all relevant maneuvers regardless of speed, preventing loss of driving maneuver information
3Productivity
If wear value is calculated without considering completed driving processes, then the calculation is faster and requires less processing, but the wear value does not correspond to actual tire wear
Solution Approach 1:
The system performs preliminary identification of completed driving processes using steering angle data before final wear calculation. This preliminary action prepares the data structure for efficient processing while ensuring all relevant maneuvers are included, achieving both speed and accuracy
Data Source
Figure 1
AI summary
The invention relates to a method for determining the wear value of a tire (2) of a vehicle (1), comprising one of the following steps: - providing a vehicle (1), wherein the vehicle (1) has at least one tire (2); - providing an evaluation device (3), wherein the evaluation device (3) is designed to determine the wear value of the at least one tire (2) as a function of a physical measurement of the vehicle (1); - determining the physical measurement of the vehicle (1); - determining the wear value of the at least one tire (2) as a function of the physical measurement of the vehicle (1) using the evaluation device (3);- Determining a completed driving process of the vehicle (1), wherein a completed driving process is a driving process of the vehicle (1) from a starting non-movement state of the vehicle (1) to a driving process of the vehicle (1) into a final non-movement state of the vehicle (1), wherein a further wear value of the at least one tire (2) is assigned to the completed driving process; - Determining a new wear value by means of the evaluation device (3) as a function of the wear value and the further wear value.;