Uncertainty evaluation method for road load measurement

A technology of load measurement and standard uncertainty, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as uncertainty source analysis, unobtainable results, and degree of uncertainty, so as to improve credibility degree of effect

Pending Publication Date: 2020-08-28
海南热带汽车试验有限公司
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Problems solved by technology

[0002] As the input parameter of the chassis dynamometer, the road load coefficient of the whole vehicle is an important influencing factor for testing and evaluating the emission and energy consumption of the whole vehicle. Therefore, it is necessary to accurately measure the road load and coefficient of the whole vehicle. Method, vehicle parameter method and other methods to measure the vehicle road load, but the existing measurement methods do not analyze the sources of uncertainty that affect the measurement results, and the degree of uncertainty of the results that cannot be obtained affects the measurement results. credibility

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  • Uncertainty evaluation method for road load measurement
  • Uncertainty evaluation method for road load measurement
  • Uncertainty evaluation method for road load measurement

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[0036] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the enumerated embodiments are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0037] figure 1 A schematic diagram of the overall flow of an uncertainty assessment method for road load measurement provided by an embodiment of the present invention

[0038] refer to figure 1 , the present invention provides a method for evaluating the uncertainty of road load measurement, said method comprising the following steps:

[0039] S11. Carry out a road load measurement test on the vehicle, and calculate and obtain test data according to the road load mathematical model and measurement data. The test data includes the sliding time of the vehicle within a certain speed interval and the resistance of the vehicle when running on the road.

[0040] S12. Analyzing uncertain influencing factors...

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Abstract

The invention provides an uncertainty evaluation method for road load measurement. The method comprises the steps: carrying out the road load measurement test of a vehicle, and obtaining test data through calculation according to a road load mathematic model and measurement data; analyzing an uncertainty source, and determining uncertainty influence factors influencing road load measurement; respectively calculating relative standard uncertainty of different uncertain influence factors according to the test data; calculating a synthetic standard uncertainty according to the relative standard uncertainty of all the uncertain influence factors; and evaluating the uncertainty of road load measurement according to the synthetic standard uncertainty. The method can help testers to determine thereliability of the road load measurement result, and therefore the credibility of the road load measurement test result can be improved.

Description

technical field [0001] The invention relates to the technical field of road load measurement, in particular to an uncertainty evaluation method for road load measurement. Background technique [0002] As the input parameter of the chassis dynamometer, the road load coefficient of the whole vehicle is an important influencing factor for testing and evaluating the emission and energy consumption of the whole vehicle. Therefore, it is necessary to accurately measure the road load and coefficient of the whole vehicle. Method, vehicle parameter method and other methods to measure the vehicle road load, but the existing measurement methods do not analyze the sources of uncertainty that affect the measurement results, and the degree of uncertainty of the results that cannot be obtained affects the measurement results. credibility. Contents of the invention [0003] The purpose of the present invention is to provide a method for evaluating the uncertainty of road load measurement...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCG06F30/13G06F30/20G06F2119/14
Inventor 黄山李洪
Owner 海南热带汽车试验有限公司
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