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Method for measuring reliability of electromechanical product

A measurement method and reliability technology, applied in measuring devices, electrical digital data processing, special data processing applications, etc., can solve problems such as ambiguity

Inactive Publication Date: 2011-09-21
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method can process random information, fuzzy information and incompletely credible information while measuring the reliability of electromechanical products, and overcomes the shortcomings of the prior art product reliability measurement schemes that do not process incompletely credible information

Method used

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  • Method for measuring reliability of electromechanical product
  • Method for measuring reliability of electromechanical product
  • Method for measuring reliability of electromechanical product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A Reliability Measurement of Aluminum Electrolytic Capacitor

[0062] Step 1, acquisition of stress data and strength data of the aluminum electrolytic capacitor

[0063] When the aluminum electrolytic capacitor is working normally in a certain circuit, the voltage at both ends of the capacitor is detected on site, and 200 stress data are obtained; from the factory data provided by the manufacturer, the withstand voltage value of the aluminum electrolytic capacitor is 50V when it is working, which is the strength data.

[0064] Step 2, processing the stress data and strength data of the aluminum electrolytic capacitor

[0065] Input the stress data and strength data of the aluminum electrolytic capacitor obtained in step 1 into the single-chip microcomputer for the following processing;

[0066] (2.1) Processing of the stress data of the acquired aluminum electrolytic capacitor

[0067] The input stress data of the aluminum electrolytic capacitor is 200 ≥ 100, which ...

Embodiment 2

[0089] A Reliability Measurement of Mechanical Bearings

[0090] Step 1, acquisition of stress data and strength data of the mechanical bearing

[0091] Through the field data collection of the experiment, the mechanical bearing is subjected to pressure during work, and the obtained tensile stress data is 100; from the factory data provided by the manufacturer, the strength data is that the mechanical bearing can bear the pressure between 100Mpa and 108Mpa.

[0092] Step 2, processing of stress data and strength data of the mechanical bearing

[0093] Input the stress data and strength data of the mechanical bearing obtained in step 1 into the single-chip microcomputer for the following processing;

[0094] (2.1) Processing of the acquired stress data of the mechanical bearing

[0095] 100 pieces of stress data of the input mechanical bearing = 100, the stress data is regarded as random stress data s, the random probability density distribution function of its stress distrib...

Embodiment 3

[0119] A Reliability Measurement of Auto Parts

[0120] Step 1, acquisition of stress data and strength data of the auto parts

[0121] When the auto part is working in the car, it will bear a certain force. The force is detected on site, and 50 data are obtained as stress data. From the factory data provided by the manufacturer, the strength data of the auto part is 100Mpa.

[0122] Step 2, the processing of the stress data and strength data of the auto parts

[0123] The stress data and the strength data of the automobile parts that step 1 obtains are input into the single-chip microcomputer and are processed as follows;

[0124] (2.1) Processing of the acquired stress data of the auto parts

[0125] The stress data of the input auto parts is 50, and the stress data is regarded as fuzzy stress data Its fuzzy membership function is The fuzzy membership function established according to the input stress data is a normal fuzzy number

[0126] (2.2) Processing of the ac...

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Abstract

The invention discloses a method for measuring reliability of an electromechanical product and relates to a digital computation method which is specially applicable to specific application, in particular to a method for measuring the reliability of the electromechanical product based on a cloud theory. The reliability is measured and analyzed on a singlechip under the condition that stress data and strength data of the electromechanical product are provided. The method comprises the following step of establishing a reliable credibility curve, wherein the curve function is that: incomplete credibility of information is reflected on cloud thickness by means of thought of the cloud theory, the H(k) is clouded, reliable credibility cloud distribution Hi(k) is established, and an output result is intuitively displayed through a computer. By the method, the reliability of the electromechanical product is measured, random information can be processed, information and incompletely reliable information can be obscured, and the defect that the incompletely reliable information is not processed by a product reliability measuring scheme in the prior art is overcome.

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 a method for measuring the reliability of electromechanical products. Background technique [0002] Reliability is the ability to describe the ability of a product to complete various predetermined functions within its service life under specified conditions of use. For example, the reliability of a certain type of TV is 0.99, which means that this type of TV has a service life of 50,000 hours under normal use conditions. Within every 100 units, at most 1 may be faulty and cannot be viewed normally. With the development of modern industry, in the fierce market competition, whether it is an enterprise engaged in batch and mass production or an enterprise developing in the direction of multi-variety, single-piece and small-batch production, it has become more and more deeply aware of the importance of produc...

Claims

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Application Information

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IPC IPC(8): G06F19/00G01D21/00
Inventor 李玲玲李志刚武猛朱芬芬
Owner HEBEI UNIV OF TECH
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