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

A technology of structural parameters and inverse dynamics, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of long cycle time and low research and development precision, and achieve the effect of simple design method, easy implementation and promotion

Active Publication Date: 2018-09-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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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 calcula

Method used

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

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Embodiment

[0070] Such as figure 1 As shown, the present invention discloses an inverse dynamics design method for matching wheel structural parameters to vehicle rollover stability, comprising the following steps:

[0071] S1. Establish an empirical expression of wheel cornering mechanical properties including structural parameters. Specifically include the following sub-steps:

[0072] S11, as an embodiment, such as figure 2 As shown, the main structure of the wheel includes a wheel 1, a hinge group 4, and a hub 5;

[0073] S12, as an embodiment, such as image 3 As shown, the structural parameters of the wheel mainly include the section width and height of the wheel 1, the distribution width and height of the elastic ring 3, the length and number of the hinge group 4, the shear modulus of the rubber layer 2, etc.; The range of values ​​is shown in Table 1.

[0074] Table 1 Value range of wheel structure parameters

[0075] parameter

Ranges

Wheel section widt...

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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 ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 赵又群李海青张桂玉徐瀚肖振
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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