Performance data accompanying product service life and reliability predicting method thereof

A prediction method and technology of product life, applied in prediction, data processing application, calculation, etc., can solve problems such as uncertain product performance life, unknown, etc.

Inactive Publication Date: 2012-09-19
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0005] The purpose of this invention is to propose a product life and reliability prediction method accompanied by performance data to solve the problem of product performance life and reliability analysis with unknown or uncertain prior information

Method used

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  • Performance data accompanying product service life and reliability predicting method thereof
  • Performance data accompanying product service life and reliability predicting method thereof
  • Performance data accompanying product service life and reliability predicting method thereof

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Embodiment Construction

[0070] This is an example of simulating the lifetime and reliability prediction of a rolling bearing with friction torque data. Let the evaluation line X of bearing friction torque be 0 = 0.465m Nm, N = 2000 data of a certain bearing friction torque obtained through experiments, as the current moment t N Time series of current running information of time units. Calculating the Maximum Lyapunov Exponent λ Using Chaotic Time Series Theory 1 =0.032, the effective prediction time interval is T=31 time units. The problem in this implementation case is to predict when the bearing friction torque reaches the evaluation line X 0 = 0.465m Nm before the future operating life time and its reliability. Through this implementation case, the specific operation steps and calculation process of the present invention will also be described, and the flow chart is shown in figure 1 .

[0071] (1) Set product performance evaluation line

[0072] During the bearing friction torque test, let...

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Abstract

The invention relates to a performance data accompanying product service life and a reliability predicting method thereof. The method comprises the following methods that firstly, an evaluation line of the product performance is set, the product performance measuring data is obtained, and the current operation information time sequence is built; the phase space reconstruction is carried out, and a phase point group is obtained; the product performance is predicted, and five future operation information time sequences of the product performance are obtained; five pieces of performance service life data reaching the performance evaluation line are predicted; a large amount of performance service life generation data is obtained; and the probability density function of the future product performance service life is predicted, the reliability function is further predicted, and the performance service life and reliability prediction of the product are completed. The method has the advantages that the probability density function of the future time product performance service life can be obtained according to the current operation information of the product performance, further, the future service life and reliability function of the product are built, the future time performance service life and reliability of the product are favorably predicted in real time, the product performance change / degeneration and failure hidden troubles are found in time, and the occurrence of serious accidents is avoided.

Description

technical field [0001] The invention relates to a product life and reliability prediction method accompanied by performance data, which belongs to the technical field of mechanical, hydraulic, electric, electrical, and other product and system performance tests, as well as performance life and reliability evaluation and prediction during service operation. Background technique [0002] Many products have high demands on performance life and their reliability. During the product performance test and service operation, it is hoped that the performance life and reliability information of the product in the future can be predicted in real time, so as to discover the hidden dangers of product performance degradation and failure in time, and avoid serious accidents. [0003] At present, there are many methods related to product performance life and reliability research, such as the Chinese patent with the publication date of May 19, 2010 and the publication number CN 101710568 A: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
Inventor 夏新涛呂陶梅马涛卢阳金银平尚艳涛
Owner HENAN UNIV OF SCI & TECH
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