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Complete vehicle level road simulation test method

A road simulation and test method technology, applied in the field of vehicle test, can solve the problem of non-convergence of iteration, and achieve the effect of reducing verification risk, improving test accuracy, shortening verification period and verification cost

Pending Publication Date: 2019-04-26
BEIJING FOTONDAIMLER AUTOMOTIVE
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AI Technical Summary

Problems solved by technology

However, when the seven-axis hydraulic servo test bench is used for the test, when the iteration point is far away from the actuator, the iteration does not converge

Method used

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  • Complete vehicle level road simulation test method
  • Complete vehicle level road simulation test method
  • Complete vehicle level road simulation test method

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.

[0019] Refer below Figure 1-Figure 4 The vehicle-level road simulation test method according to the embodiment of the present invention is described.

[0020] Such as figure 1 As shown, the vehicle-level road simulation test method according to the embodiment of the present invention may include the following steps:

[0021] S1. According to the layout, weight and size of the entire system to be tested and the results of computerized vehicle modal analysis, determine the form of the bench test and formulate a collection plan for the road load spectrum. In order to formulate the scheme of vehicle load spectrum acquisition, the main consideration is to meet the requirements of the bench test. At the same time, the computer analysis needs to provide input ...

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Abstract

The invention discloses a complete vehicle-level road simulation test method, which comprises the following steps of: judging a rack test form according to the arrangement, weight and size of a wholesystem to be tested and a computer whole vehicle modal analysis result, and formulating a road load spectrum acquisition scheme; Acquiring a load spectrum according to the acquisition scheme and the test field acquisition standard of the associated user; Based on an equal damage principle, editing the load, and generating an acceleration spectrum for the rack; carrying out Virtual iteration on multi-body dynamic software, and prejudging convergence; Based on a multi-body dynamics analysis result, carrying out dynamics modification on the whole to-be-tested test model; And based on the compressed and edited acceleration spectrum, carrying out a whole vehicle-level road simulation test on the whole system to be tested on a rack. Therefore, the method can improve the test precision, shorten the verification period and the verification cost, and reduce the verification risk.

Description

technical field [0001] The invention relates to the technical field of vehicle testing, in particular to a vehicle-level road simulation test method. Background technique [0002] Durability, as an important indicator for evaluating automobiles, has received more and more attention from the industry. According to foreign statistics, in the modern industrial field, more than 80% of mechanical parts are damaged by fatigue. Therefore, durability testing is an important part of the R&D process to reveal product problems and improve product quality. Compared with the vehicle road test and CAE (computer-aided engineering) simulation test, the road simulation test has the advantages of not being restricted by weather conditions, short test period, high test result accuracy, good repeatability and controllability, etc., which is conducive to improving product development. quality and efficiency. [0003] In the related art, the vehicle-level road simulation test method is general...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F2119/06G06F30/20
Inventor 段凯欣刘瑜瑾
Owner BEIJING FOTONDAIMLER AUTOMOTIVE
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