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A Mathematical Model-Based Method for Predicting the Storage Life of Hermetic Relays

A storage life and mathematical model technology, applied in the direction of instruments, electrical digital data processing, special data processing applications, etc., can solve the problem of low prediction accuracy, achieve the effect of increasing sample size, increasing the number of inputs, and improving accuracy

Active Publication Date: 2020-02-07
HEBEI UNIV OF TECH
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Problems solved by technology

[0008] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for predicting the storage life of sealed relays based on mathematical models, which is used to solve the problem of low prediction accuracy in the prior art

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  • A Mathematical Model-Based Method for Predicting the Storage Life of Hermetic Relays
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  • A Mathematical Model-Based Method for Predicting the Storage Life of Hermetic Relays

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The temperature of this patent is not limited, the type of parameters is not limited, and the sample data of the sealed relay is not limited.

[0035] Such as Figure 4 As shown, taking the sealed relay contacts after the accelerated storage life test at a constant temperature of 125°C as an example, a mathematical model-based storage life prediction method for sealed relays includes the following steps:

[0036] The two relevant parameter data of 25 sealed relay samples in the accelerated life test at a constant temperature of 125°C were sorted out, and the two parameters of release voltage and contact pressure drop were selected for analysis. Taking sample 1 as an example, determine the correlation coefficient between each sample and 8 pairs of contacts: each relay sample has 8 pairs of contacts, and there is mutual influence between each pa...

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Abstract

The invention provides a mathematic model-based sealed relay storage life prediction method. The mathematic model-based sealed relay storage life prediction method comprises the following steps of: arranging 6 related reference data of all the samples of 25 sealed relays in an accelerated life test at each temperature, and obtaining correlation coefficients between each pair of contacts and correlation coefficients between every two samples through establishing a correlation coefficient analysis model; establishing score coefficient models of the contacts of the sealed relays under each parameter; determining a mathematic model for predicting the storage life of the sealed relays; and inputting contact resistances into the mathematic model to carry out prediction, wherein the time when the contact resistances achieves an invalid threshold value is the storage life of the sealed relays. The method provided by the invention can be used for predicting the storage life of the sealed relays in a relatively correct way, and is relatively high in stability.

Description

technical field [0001] The invention relates to the technical field of reliability, in particular to a method for predicting the storage life of a sealed relay based on a mathematical model. Background technique [0002] The sealed relay is in a sealed state for a long time. In order to ensure that its various stages are always in the standby activation state, it is necessary to predict the storage life of the sealed relay. Many scholars at home and abroad have studied the storage life of sealed relays through accelerated life tests. Accelerated storage life test is difficult to obtain failure data, which brings great difficulties to the evaluation and analysis of storage reliability of sealed relays based on failure data. [0003] At present, there are some traditional methods for predicting the storage life of sealed relays, and there are also some methods that combine several traditional methods for prediction, and many new methods for predicting the storage life of seal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20G06F2113/12
Inventor 李文华周露露
Owner HEBEI UNIV OF TECH
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