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Semi-test life and reliability simulation method for mechanical and electrical product

A simulation method and test life technology, which can be used in design optimization/simulation, computer-aided design, complex mathematical operations, etc.

Active Publication Date: 2021-02-02
BEIHANG UNIV
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Problems solved by technology

[0005] Objective: To solve the problems that the life and reliability simulation of electromechanical products is difficult to realize and the simulation results are difficult to effectively use, to establish a set of semi-test life and reliability simulation methods for electromechanical products, as well as the corresponding simulation results inspection and simulation results fusion utilization methods, in order to achieve The purpose of high-precision reliability evaluation in the case of small samples

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  • Semi-test life and reliability simulation method for mechanical and electrical product
  • Semi-test life and reliability simulation method for mechanical and electrical product
  • Semi-test life and reliability simulation method for mechanical and electrical product

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Embodiment Construction

[0093]The present invention proposes a half-test and lifetime reliability simulation method for electromechanical products. The following will further describe the present invention in detail in conjunction with a certain aerospace type thruster component. The specific steps are as follows:

[0094]Among them, the method of "establishing the Weibull distribution half-test life and reliability simulation method to realize the product life stochastic simulation and reliability statistical inference under the Weibull distribution" described in step one is as follows:

[0095]Assuming that the life of the thruster component 1 of this aerospace model obeys the two-parameter Weibull distribution shown in equation (4), and the lower limit of its shape parameter is calculated according to the test data of similar model products to be 2.2, and this is used as the estimated value of α, namelyIn addition, the average life of the product is obtained by simulation calculation based on methods such as ...

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Abstract

The invention provides a semi-test life and reliability simulation method for an electromechanical product, and the method comprises the following steps: 1, building a Weibull distribution semi-test life and reliability simulation method, and achieving the random simulation and reliability statistical inference of the life of a product under Weibull distribution, 2, establishing a logarithmic normal distribution semi-test life and reliability simulation method, and realizing product life random simulation and reliability statistical inference under logarithmic normal distribution, 3, establishing a product reliability simulation test method, testing product reliability and a reliable life simulation test result, and judging whether a reliability simulation system is correct and credible ornot under a high confidence level, and 4, establishing a life prediction and reliability evaluation method combining simulation and test, and performing reliability fusion evaluation by using producttest data and simulation data. Random simulation, simulation test and fusion utilization of the reliability and the service life of the mechanical and electrical product are realized, the informationamount of reliability evaluation of the mechanical and electrical product is increased, and the reliability evaluation precision of the product is improved.

Description

Technical field[0001]The present invention relates to a half-test life and reliability simulation method of electromechanical products, aiming to establish a set of electromechanical product life and reliability simulation methods for the problems that the life and reliability simulation of electromechanical products is difficult to realize and the simulation results are difficult to effectively utilize, and The corresponding simulation result verification and simulation result fusion utilization method belong to the field of reliability engineering.Background technique[0002]The reliability of a product is defined as the ability of a product to complete a specified function under specified conditions and within a specified time. The traditional reliability evaluation method is based on test statistics, that is, a large number of reliability tests need to be carried out after the product development is completed. For aerospace, military equipment and other highly reliable and complex...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/18G06F119/04
CPCG06F30/20G06F17/18G06F2119/04
Inventor 傅惠民文歆磊付越帅
Owner BEIHANG UNIV
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