Electromagnetic compatibility reliability evaluation method for avionic device power supply module

Abstract

Provided is an electromagnetic compatibility reliability (EMR) evaluation method for an avionic device power supply module. The method comprises the five steps of information collection, simulated analysis, hard failure EMR evaluation, cumulative failure EMR evaluation and comprehensive EMR evaluation. According to the electromagnetic reliability evaluation method for the avionic device power supply module, the electromagnetic effect action mechanism is researched from the angle of the failure mechanism, the simulation technology is utilized, a stress and strength interference (SSI) model and a method of probability physics of failure (PPoF) are combined, the detailed research is performed for the relative reliability of electromagnetic compatibility of the avionic device power supply module, the method for evaluating the electromagnetic reliability of the avionic device power supply module on the basis of the simulated analysis is put forward, therefore, a designer can have intuitive understanding on the EMR level of a product in the design stage, and the reference basis can be supplied for the design improvement of the product.

Description

technical field [0001] The invention provides a simulation-based method for evaluating the electromagnetic compatibility reliability (Electromagnetic Reliability, EMR) of a power module of an avionics device, and belongs to the field of product reliability. Background technique [0002] With the advent of the information age, the level of electrification and automation is constantly improving, and electronic products are developing in the direction of miniaturization, integration, high power, high frequency, high speed, and high sensitivity. The electromagnetic environment around us is becoming more and more complex. These electronic devices are emitting various useful or useless electromagnetic waves to the outside world, which interfere with the normal operation of other electronic devices. As the most important and flexible electronic countermeasure platform at present, the types and quantities of avionics devices are increasing day by day, the electromagnetic spectrum oc...

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Problems solved by technology

[0006] In view of the shortcomings that the prior art cannot clearly provide the EMR index value as an important reference for the electromagnetic compatibility design and optimization of the electronic device, the purpose of the present invention is to provide a set of methods for evaluating the reliability of the electromagnetic compatibility of the power module of the avionics device, Specifically, based on the electromagnetic compatibility simulation technology, the SSI (Stress Strength Interference) theory and the PPoF (Probability Physics of Failure) method are integrated into the electromagnetic effect analysis, and then the electromagnetic cumulative damage of the avionics device is obtained. EMR index, establishes the quantitative relationship between electromagnetic stress and reliability index, intuitively grasps the EMR level of the product, and provides a reference for the design and optimization of electromagnetic compatibility of the product

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