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Road spectrum processing method and device

A processing method and processing device technology, applied in the field of road spectrum processing, can solve the problems of poor adaptability, long processing cycle of road spectrum data, etc., and achieve the effect of shortening the test time

Active Publication Date: 2017-07-07
SAIC GENERAL MOTORS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention aims to provide a road map reduction and strengthening method and device to solve the technical problems of long road map data processing cycle and poor adaptability in the prior art

Method used

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  • Road spectrum processing method and device
  • Road spectrum processing method and device

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Experimental program
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Effect test

Embodiment 1

[0070] This embodiment provides a road spectrum processing method, which is applied to an automobile test system or platform, such as figure 1 shown, including the following steps:

[0071] S101: Acquire the actual road spectrum data of the road during the actual test period; the actual road spectrum data can be collected by sensors installed on the vehicle, and the test system or platform can directly obtain the data detected by the sensor, for example, the acceleration sensor measures the vehicle's Three-dimensional acceleration vibration data, etc., the actual test period can be set according to the needs, and it usually needs to last for hundreds of hours. In the actual test, due to the duration of hundreds of hours, the driving distance is very long, and the amount of data collected is very large. Although all the actual road spectrum data collected can be directly analyzed, it may be affect data processing speed. For this reason, can adopt following mode: divide descri...

Embodiment 2

[0078] The road spectrum processing method provided in this embodiment is applied to an automobile test system or platform, such as figure 2 shown, including the following steps:

[0079] S201: Obtain the actual road spectrum data of the road in the actual test period. The actual road spectrum data can be collected by the sensors installed on the car, and the test system or platform can directly obtain the data detected by the sensors, for example, the three-dimensional acceleration vibration data of the car can be measured by the acceleration sensor, and the actual test period can be set according to the needs. In general, it will take hundreds of hours. In the actual test, due to the duration of hundreds of hours, the driving distance is very long, and the amount of data collected is very large. Although all the actual road spectrum data collected can be directly analyzed, it may be affect data processing speed. For this reason, following mode can be adopted: divide desc...

Embodiment 3

[0102] This embodiment provides a road spectrum processing device, such as Figure 8 shown, including:

[0103] The road spectrum data acquisition unit 101 acquires the actual road spectrum data of the road in the actual test period; the actual road spectrum data can be collected by sensors installed on the car, and the test system or platform can directly obtain the data detected by the sensors, for example, through The acceleration sensor measures the three-way acceleration and vibration data of the car, etc. The actual test period is set according to the needs, and it usually takes several hundred hours. In the actual test, due to the duration of hundreds of hours, the driving distance is very long, and the amount of data collected is very large. Although all the actual road spectrum data collected can be directly analyzed, it may be affect data processing speed. For this reason, can adopt following mode: divide described road into a plurality of sub-sections, obtain the ...

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Abstract

The embodiment of the invention provides a road spectrum processing method and device. After practical road spectrum data of a road within a practical test period are obtained, a practical PSD spectrum and practical PSD spectrum energy of the road are obtained based on the practical road spectrum data; a practical PSD spectrum is simplified to obtain a simplified PSD spectrum and simplified PSD spectrum energy; according to the practical PSD spectrum energy, the simplified PSD spectrum energy, the test period, and a target test period, a strengthening factor is obtained based on an energy equivalence principle; and according to the strengthening factor and the simplified PSD spectrum, a strengthened PSD spectrum is obtained. Therefore, the finally obtained strengthened PSD spectrum can at least meet two conditions; during the testing, the testing time can be shortened to the needed target test time; ad the strengthened PSD spectrum energy and the energy of the practical road spectrum data detected during the practical testing is equal. With the method and device provided by the invention, road spectrum data are processed and the test time can be shortened; and no requirement on parts is needed, so that universality is high.

Description

technical field [0001] The present invention relates to the technical field of road spectrum processing, in particular to a road spectrum processing method and device based on PSD (Power Spectral Density, power spectral density) analysis. Background technique [0002] The road spectrum refers to the road surface spectrum. The various parts of the car will have different responses during the driving process of the car, resulting in dynamic stress, which will cause fatigue damage to the parts, and even lead to failure in severe cases. The collection and processing of the road spectrum is the data basis for engineers to develop and analyze components, and to predict and judge the fatigue life of components. Generally, the road spectrum data collected from the actual road is analyzed and processed and then applied to the laboratory. Therefore, how to process the road spectrum scientifically, authentically and effectively is the key to ensure that the test results are consistent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 赵尤蕾李晨阳
Owner SAIC GENERAL MOTORS
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