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Tire lateral inclination and lateral deviation steady-state lateral force characteristic modeling method based on nonlinear superposition

A modeling method and lateral force technology, applied in the field of tire dynamics, can solve the problems of ambiguous physical meaning of model parameters and low model prediction ability, and achieve the effect of high model accuracy, strong prediction ability, and satisfying theoretical boundary conditions

Inactive Publication Date: 2015-04-01
JILIN UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The patent of the present invention relates to a stable tire model. The current stable tire models mainly include the magic formula, UniTire, Fiala, UA, ADAMS / 5.2.1 model and TM-easy tire model, etc. The above tire models are used to express tire roll stability When considering the lateral force characteristics of the state, either simplified theoretical expressions or pure empirical formulas are used, which leads to problems such as unclear physical meaning of model parameters and low predictive ability of the model.

Method used

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  • Tire lateral inclination and lateral deviation steady-state lateral force characteristic modeling method based on nonlinear superposition
  • Tire lateral inclination and lateral deviation steady-state lateral force characteristic modeling method based on nonlinear superposition
  • Tire lateral inclination and lateral deviation steady-state lateral force characteristic modeling method based on nonlinear superposition

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Embodiment Construction

[0071] The present invention will be further described below in conjunction with the accompanying drawings. The tires used in the verification of this method are General P215 / 70R1699S tires with a tire pressure of 262kPa. figure 1 The tire mechanical characteristics test bench test shown in the figure obtained the test data under the tire roll and yaw condition, using the invented tire roll and roll yaw steady-state lateral force model based on nonlinear superposition, and using the curve fitting technology to identify the tire The parameters of the model. Specific steps are as follows:

[0072] Step 1: Install General P215 / 70R16 99S tires on such as figure 1 On the tire mechanical characteristic test bench shown in Table 1, complete the steady-state mechanical characteristic test under the tire roll and yaw condition according to the test requirements shown in Table 1, and record the test data. The test data include tire roll angle, side slip angle, vertical load , tire ro...

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Abstract

The invention belongs to the technical field of tire dynamics and discloses a tire lateral inclination and lateral deviation steady-state lateral force characteristic modeling method based on nonlinear superposition. The tire lateral inclination and lateral deviation steady-state lateral force is decomposed into nonlinear superposition of lateral deviation lateral force and lateral inclination lateral force, a tire lateral inclination and lateral deviation steady-state lateral force model is built, tire lateral inclination and lateral deviation steady-state lateral force test data obtained by testing through a tire dynamics characteristic testbed are identified by a curve fitting technology to obtain parameters of the built tire model, and the model has the advantages of being high in precision, definite in parameter physical meaning, capable of meeting the theory boundary condition and high in forecasting capacity, and can be used for high-precision car dynamics simulation.

Description

technical field [0001] The invention belongs to the technical field of tire dynamics, and in particular relates to a method for modeling the lateral force characteristics of a tire in a steady state based on nonlinear superposition. The tire roll and deflection test data obtained by testing a tire mechanical characteristic test bench is adopted. The parameters of the tire model are identified by curve fitting technology, and the steady-state model of tire roll and lateral force is obtained, which is used for vehicle dynamics simulation. Background technique [0002] Tires are an important part of the car, and the force between the vehicle and the ground is transmitted through the tires. The mechanical characteristics of tires are the basis of automobile performance analysis and design, and have an important impact on automobile safety, operating stability, ride comfort and other performances. [0003] The tire model is to establish the relationship between the tire motion p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/02
Inventor 卢荡张海涛刘兵
Owner JILIN UNIV
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