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Method for measuring reliability of mechanical/electronic product

A measurement method and reliability technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as loss

Inactive Publication Date: 2011-11-23
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the formula (1) loses its meaning, which is the shortcoming of the existing product reliability calculation method

Method used

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  • Method for measuring reliability of mechanical/electronic product
  • Method for measuring reliability of mechanical/electronic product
  • Method for measuring reliability of mechanical/electronic product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A measure of the reliability of a linkage mechanism.

[0048] The first step, the acquisition and classification of the stress data and strength data of the linkage mechanism

[0049] Through the data collection of the test site, the connecting rod mechanism is subjected to tension during work, and the statistical value of the tension is measured through the test. The obtained tension (ie stress) data is 1500, and the stress data is regarded as random stress data; for A total of 80 data between 7Mpa and 15Mpa were obtained for the tensile strength of the connecting rod mechanism, and the strength data was regarded as fuzzy strength data, and the random stress data and fuzzy strength data obtained in this way were input into the single-chip computer for processing;

[0050] The second step is the processing of the stress data and strength data of the linkage mechanism

[0051] The stress data and strength data of the linkage mechanism obtained and classified in the firs...

Embodiment 2

[0066] A measure of the reliability of the electromagnetic system of a new electrical product.

[0067] The first step is to obtain and classify the generalized stress data and generalized strength data of the electromagnetic system of the new electrical product

[0068] It is known that the excitation voltage of the electromagnetic system of this new electrical product is 12V ~ 18V, and the stable pull-in voltage is 18V. Here, the excitation voltage is defined as fuzzy generalized stress, and the generalized stress data of the electromagnetic system of this new electrical product is regarded as fuzzy generalized stress Data, the stable pull-in voltage of the electromagnetic system of the new electrical product is fuzzy generalized intensity, the intensity data of the electromagnetic system of the new electrical product is regarded as fuzzy intensity data, and the fuzzy generalized stress data and fuzzy generalized intensity data obtained in this way are input into the single c...

Embodiment 3

[0083] A measure of the reliability of an engine's compressor disk.

[0084] The first step, the acquisition and classification of the stress data and strength data of the compressor disk of the engine

[0085] When the engine is working, the engine compressor plate will bear a certain force. By collecting the pressure on the engine when it is working, 1000 stress data are obtained, and the stress data is regarded as random stress data. The compressor plate of the engine is made of a specific material. According to the relevant 200 strength data, the strength data is regarded as random strength data, and the random stress data and random strength data obtained in this way are input into the single-chip microcomputer for processing.

[0086] The second step is the processing of the stress data and strength data of the compressor disk of the engine

[0087] The stress data and strength data of the engine compressor disc obtained and classified in the first step are respectively...

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Abstract

The invention discloses a method for measuring the reliability of a mechanical / electronic product, relating to a digital computation method especially suitable for special applications. In the method disclosed by the invention, through comprehensively processing probability density functions and membership functions based on a generalized stress-generalized strength interference model, the comprehensive processing on random information and fuzzy information in the process of measuring the reliability of the product is realized so as to obtain the reliability value of the mechanical / electronic product, and the reliability curve and reliability value of the product are intuitively displayed by a computer, thereby overcoming the defect that in the existing product reliability calculation method, under the condition that the random information and the fuzzy information coexist, the reliability of the product is difficult to measure.

Description

technical field [0001] The technical solution of the present invention relates to a digital calculation method specially suitable for a specific application, in particular to a measurement method for the reliability of electromechanical products. Background technique [0002] Product reliability refers to the ability of the product to complete normal work, specifically refers to the ability of the product as a whole, components or parts to complete the specified functions under specified conditions and within a specified time. [0003] With the development of science and technology, people have higher and higher requirements for product quality, performance and reliability. Product reliability has become the focus of product competition in various countries, and it is an important symbol of the quality of a country's technical team and the level of industrial foundation. . The quality of the product plays a decisive role in the success of the production and operation of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 李玲玲李志刚武猛朱芬芬
Owner HEBEI UNIV OF TECH
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