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Integrated acceleration factor based electromechanical product reliability index evaluation method

An acceleration factor and reliability technology, which is applied in the field of reliability index evaluation of electromechanical products based on comprehensive acceleration factors, can solve the problems of insensitivity to acceleration stress, single acceleration stress, and large acceleration factor error of electromechanical products

Inactive Publication Date: 2018-09-07
SUNLIGHT TECH BEIJING
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Problems solved by technology

[0004] The purpose of the present invention is: to propose a method for evaluating the reliability index of electromechanical products based on comprehensive acceleration factors, to solve the problems of insensitivity to acceleration stress of electromechanical products, single acceleration stress, low test efficiency, and large error of acceleration factors, etc., fully considering engineering applications Feasibility of practice in order to better adapt to the reliability index evaluation problem of high-reliability and long-life products

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  • Integrated acceleration factor based electromechanical product reliability index evaluation method
  • Integrated acceleration factor based electromechanical product reliability index evaluation method
  • Integrated acceleration factor based electromechanical product reliability index evaluation method

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Embodiment Construction

[0076] The present invention will be further described below in conjunction with implementation examples, which are used to illustrate rather than limit the present invention.

[0077] The object of the implementation example is a certain electromechanical product. In the development stage, it is necessary to make a decision whether it can be transferred to the mass production stage, and the relevant reliability and life indicators need to be provided according to the customer's requirements. Then, in conjunction with the implementation example, the present invention is specifically realized through the following steps:

[0078] Step 1: Focus on the main failure mode of concern, find the root cause of the failure through a multi-pronged approach, and determine the sensitive stress set.

[0079] For a certain electromechanical product, the product R&D engineers (including product design engineers and process design engineers) and quality reliability engineers set up an interdis...

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Abstract

The invention discloses an integrated acceleration factor based electromechanical product reliability index evaluation method. The method is characterized by comprising the steps that a basic reason for a fault is searched for from many aspects with the focus on a main fault mode, and a sensitive stress set is determined; a test scheme is designed, and key factors of the acceleration life test scheme are determined; acceleration life test is carried out; test data is analyzed statistically; and fault data of full life periods of client products are collected continuously, and an integrated acceleration factor is corrected iteratively and improved gradually so that the factor satisfies the engineering practicality more. The problems that an electromechanical product is not sensitive to theacceleration stress, the product is single in the acceleration stress and low in the test efficiency, and error of the acceleration factor is large are solved, the feasibility of engineering practiceis taken into full consideration, and the method is more suitable for evaluation of the reliability index of the high-reliability long-life product.

Description

technical field [0001] The invention relates to the technical field of reliability testing, and relates to a reliability index evaluation method of electromechanical products based on comprehensive acceleration factors. Background technique [0002] With the increasingly fierce market competition, there are more and more high-reliability and long-life products in the field of civilian household appliances. If conventional reliability and life test methods are used to evaluate product reliability and life characteristics, it often takes unbearable time and cost, and even before the test is completed, the product has been updated or eliminated due to backward performance. Obviously, such a long test time not only misses the best opportunity to improve product reliability, but also seriously affects the progress of research and development, which is unacceptable in engineering practice. Therefore, it is both necessary and important to use the accelerated life test method to ev...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/06393
Inventor 邵家骏邢晓艳吴晓华
Owner SUNLIGHT TECH BEIJING
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