Inverse dynamics method for car wheel structure parameter matching and whole car side-turn stability

Abstract

The invention discloses an inverse dynamics method for car wheel structure parameter matching and whole car side-turn stability. The method comprises the following steps that S1, main structure parameters affecting wheel side slip mechanical properties are obtained on the basis of the method for combining bench tests and finite element simulation, and a wheel side-turn mechanical property experience expression including structure parameters is built; S2, on the basis of Simulink software, a nonlinear three-degree-of-freedom side-turn prediction model matched with wheel mechanical properties isbuilt; S3, side-turn stability simulation for combination of different structure parameters under car front wheel angle step working conditions is performed, car side-turn stability index parametersunder a plurality of sets of different structure parameter combination working conditions are obtained; S4, by means of the inverse dynamics theory, a neural network model with the input as the car side-turn stability evaluation index and the output as the combination of different structure parameters is built; S5, by means of a simulation result, network training is performed, and the relation between wheel structure parameter matching and the car side-turn stability is constructed. The method is easy to implement and has the good application prospect.

Description

technical field [0001] The invention belongs to the technical field of vehicle structure and performance optimization design, and in particular relates to an inverse dynamics method for matching wheel structure parameters with vehicle rollover stability. Background technique [0002] Tires are the only car parts that are in contact with the ground, and their performance has an important impact on the rollover stability of the car. Production of various suitable tires according to vehicle performance requirements and how to match suitable tires for design models have always been issues of great concern to tire manufacturers and vehicle designers. [0003] At present, the matching of wheels and cars in the initial design process of cars is mostly based on simple theoretical calculations and test adjustments of prototype cars, which has the disadvantages of low research and development accuracy and long cycle time. Studying the theory and method of predicting the relationship ...

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Problems solved by technology

[0003] At present, the matching of wheels and cars in the initial design process of cars is mostly based on simple theoretical calculations and test adjustments of prototype cars, which has the disadvantages of low research and development accuracy and long cycle time.

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