Truck dynamic modeling method based on transfer matrixes

A technology for dynamic modeling and trucks, which is applied in the field of truck dynamics modeling based on transfer matrix, can solve the problem of high code reuse rate, low matrix storage capacity, and inability to efficiently and accurately establish truck dynamics learning models etc.

Active Publication Date: 2018-11-02
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a truck dynamics modeling method based on the transfer matrix, which solves the problem that the truck dynamics model cannot be established efficiently and accurately in the existing methods It is easy to program, involves low matrix storage and high code reuse rate, can accurately and quickly establish the dynamic model of the truck, and use it for dynamic characteristic analysis

Method used

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  • Truck dynamic modeling method based on transfer matrixes
  • Truck dynamic modeling method based on transfer matrixes
  • Truck dynamic modeling method based on transfer matrixes

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Experimental program
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Embodiment

[0130] A dynamic modeling method for trucks based on transfer matrix, such as figure 1 As shown, the specific steps are as follows:

[0131] 1) Establish the transfer matrix of the mechanical components in the truck dynamic model, and use Matlab language to establish each transfer matrix library in the form of a class for calling;

[0132] The transfer matrix of mechanical elements in the established truck dynamic model includes lumped mass matrix, spring matrix, multi-input and single-output planar rigid body matrix, Euler-Bernoulli beam matrix and virtual rigid body matrix. The transfer matrices are:

[0133] The lumped mass matrix is:

[0134]

[0135] The spring matrix is:

[0136]

[0137] The multi-input single-output planar rigid body matrix is:

[0138]

[0139] In the formula,

[0140]

[0141]

[0142]

[0143]

[0144]

[0145]

[0146] The Euler-Bernoulli beam matrix is:

[0147]

[0148] In the formula,

[0149]

[0150]

[...

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Abstract

The invention discloses a truck dynamic modeling method based on transfer matrixes. The method comprises the steps of establishing transfer matrixes of dynamic elements in a truck dynamic model; carrying out reasonable assumption on a truck, thereby obtaining a rigid-flexible coupled dynamic model with truck features; on the basis of a transfer matrix method theory, determining truck element serial numbers, transmission directions and cutting locations; modularly establishing a transfer matrix method of the truck, scattering the elements in each module, establishing sub-module transfer matrixes, obtaining a total transfer matrix of the truck dynamic model through splicing, and establishing the truck dynamic model; and in a frequency domain, through road surface spectrum input, and carryingout inherent characteristic and dynamic characteristic analysis on the established model according to a random vibration theory. According to the method provided by the invention, the modeling efficiency and accuracy and a code reuse rate are improved, and the theoretical basis for truck ride comfort analysis is provided.

Description

technical field [0001] The invention belongs to the field of automobile engineering, in particular to a transfer matrix-based truck dynamics modeling method. Background technique [0002] With the development of the transportation industry, trucks have become an indispensable means of transportation. People have higher and higher requirements for them, and higher requirements for ride comfort. Ride comfort is one of the important performance indicators of trucks. This indicator reflects the intense vibration of trucks. It is not only related to the efficiency and reliability of transportation, the life of parts and fuel economy, but also seriously endangers human safety. [0003] In order to improve the ride comfort of the truck, the first thing to do is to study the modeling of the vehicle system. However, for the complex multi-body system of a car, the commonly used dynamic modeling and simulation methods such as the Newton-Eulerian method, the Kane method, and the Lagran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20Y02T90/00
Inventor 刘夫云张智聪杨超伍建伟赵亮亮
Owner GUILIN UNIV OF ELECTRONIC TECH
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