Parameter identification and optimization method for tire magic formula

A magic formula and parameter identification technology, applied in the field of vehicle dynamics parameter identification, can solve problems such as poor local search ability, slow convergence speed, and poor real-time performance of the algorithm

Inactive Publication Date: 2016-12-07
CHANGAN UNIV
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Problems solved by technology

At present, the genetic algorithm is often used for research on the general magic formula parameter identification problem. Although the genetic algorithm can also be iden

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  • Parameter identification and optimization method for tire magic formula
  • Parameter identification and optimization method for tire magic formula
  • Parameter identification and optimization method for tire magic formula

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[0065] Such as figure 1 As shown, a parameter identification and optimization method for tire magic formula of the present invention is based on the tire dynamics model, based on the simplified empirical magic formula tire model, and the least square method is used to initially identify the simplified magic formula. The parameters in the formula are used to identify the parameters of the magic formula more accurately, and to further determine the possible value range of each parameter. The particle swarm algorithm is used to optimize a series of parameters obtained from the initial recognition to realize the adaptive adjustment of the magic formula parameters, and the final identification is obtained The parameters of the magic formula with high accuracy and good accuracy will provide a basis for the analysis of vehicle performance and subsequent product research.

[0066] Its characteristics specifically include the following steps:

[0067] Step 1: Data sampling in the magic for...

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Abstract

The invention belongs to the technical field of vehicle dynamics parameter identification, and specifically relates to a parameter identification and optimization method for a tire magic formula. The method comprises the following steps: 1, according to an automobile tire dynamics test, carrying out test operation, and based on an empirical magic formula tire model, acquiring data of corresponding independent variables and dependent variables in the formula according to different working conditions; 2, primarily identifying major parameters in the tire magic formula from the acquired data through nonlinear least squares; and 3, based on the second step, by use of a particle swap algorithm, performing deep optimization on the parameters through primary identification to obtain parameters with higher accuracy and precision. Through identification by use of the method, the parameters of the magic formula can be efficiently and rapidly identified, the realization is facilitated, and the universality is good.

Description

technical field [0001] The invention belongs to the technical field of vehicle dynamics parameter identification, and relates to a parameter identification and optimization method for a tire magic formula. Background technique [0002] With the rapid growth of the automobile industry and the substantial increase in the number of cars in the market, and the rapid development of vehicle technology and computer information technology, whether it is for traditional cars or new energy vehicles, vehicle design is increasingly biased towards low-cost, high-efficiency, and informatization. etc. Information technology promotes the development of modern automobile design technology, and the intelligent, refined and rapid processing and manufacturing have improved the technological content of automobile manufacturing technology and brought about a qualitative change in traditional manufacturing technology. In particular, the application of computer simulation technology in the automobi...

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Application Information

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IPC IPC(8): G06Q10/04
CPCG06Q10/04G06F30/15B60C99/006G06N3/006G06N20/00
Inventor 王化王崇晓
Owner CHANGAN UNIV
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