Tire Behavior Estimation Using Design-to-Magic Formula Conversion
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Solution Overview
Problem
Existing tire behavior analysis methods face challenges in accurately reflecting tire design information using the Magic Formula tire model, as the direct relation between parameters and design information is weak, and in using generic tire models without actual measurement data.
Innovation Solution
A tire behavior estimating device and method that converts tire design information into parameters for the Magic Formula tire model, allowing explicit reflection of tire design information and enabling vehicle simulation without relying on actual measurement data, by using a storing section to store relationships between tire design information and model parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the Magic Formula tire model is used with conventional parameter input methods, then the model can output physical amounts relating to tire behavior, but the direct relation between tire design information and model parameters is weak, making it difficult to explicitly reflect tire design information
Solution Approach 1:
The patent introduces an intermediary conversion system that translates tire design information into Magic Formula model parameters. This intermediary layer (comprising the storing section, acquiring section, converting section, and inputting section) bridges the gap between design information and model parameters, enabling explicit reflection of design information without directly modifying the Magic Formula model structure.
Solution Approach 2:
The patent performs preliminary conversion of tire design information into model parameters before inputting them to the Magic Formula tire model. The conversion process is prepared in advance through the storing section that pre-stores relationships between design information and parameters, allowing the model to receive properly formatted inputs that explicitly reflect design information.
2Reliability
If actual measurement data is used to derive coefficients for the Magic Formula, then accurate tire behavior can be obtained, but the need for actual measurement data limits applicability when measurement data is unavailable
Solution Approach 1:
The patent creates a virtual representation of tire behavior by converting tire design information into model parameters that replicate the effects of actual measurement data. Instead of requiring physical measurement copies, the system uses design information copies processed through the conversion sections to generate accurate tire behavior estimates, enabling application without actual measurement data.
Solution Approach 2:
The patent transforms tire design information parameters into Magic Formula model parameters through systematic conversion relationships. By changing the form and representation of parameters from design information to model parameters, the system maintains accuracy while removing the dependency on actual measurement data, thereby increasing adaptability.
3Ease of manufacture
If generic tire models are used without specific conversion processes, then the system is simpler to implement, but the accuracy of reflecting specific tire design information is reduced
Solution Approach 1:
The patent segments the tire behavior estimation process into distinct functional sections: storing section for relationships, acquiring section for design information, converting section for parameter transformation, and inputting section for model input. This segmentation maintains implementation simplicity by organizing functions separately while improving accuracy through dedicated conversion processes that specifically address tire design information reflection.
Data Source
AI summary
A tire behavior estimating device that estimates a physical amount relating to behavior of a tire from tire design information by using a tire model that outputs a physical amount relating to behavior of a tire in accordance with input parameters, the device including: a storing section storing relationships of correspondence between tire design information and parameters that are inputs to the tire model; an acquiring section acquiring tire design information; a converting section that, based on the relationships of correspondence stored in the storing section, converts tire design information acquired at the acquiring section into parameters to be input into the tire model; and an inputting section inputting the parameters converted at the converting section into the tire model.