Space radiation reliability evaluation method for an aerospace electronic product

Abstract

The invention discloses a space radiation reliability evaluation method for an aerospace electronic product. The method comprises the steps of making fault physical analysis; establishing a space radiation related fault information matrix, and classifying and collecting parameters of the physical model; carrying out single event effect simulation, total dose effect simulation and displacement damage effect simulation, considering the mutual relation between spatial fault mechanisms, analyzing the simulation life of the tested device under the single event effect, the total dose effect and thedisplacement damage effect, and acquiring the failure life of the tested device under the combined action of the spatial radiation environment effect. According to the invention, from the perspectiveof a fault mechanism; Aimed at the reliability development research related to the space radiation of the spaceflight electronic product, the invention provides a method for evaluating the space radiation reliability of the spaceflight electronic product based on simulation analysis, so that a designer can intuitively understand the space radiation reliability level of the product in the design stage, thereby providing a reference basis for the design improvement of the product.

Description

technical field [0001] The invention provides a simulation-based space radiation reliability evaluation method (Space Radiation Reliability, SRR) for evaluating aerospace electronic products, which belongs to the field of reliability analysis of aerospace electronic products. Background technique [0002] In recent years, a series of high-tech and complex equipment has been continuously launched in our country, major projects have continued to make breakthroughs, the construction of the space station is in order, and the plan to land on the moon is ready to go. Everything requires highly reliable electronic components. Due to the complex structure of the spacecraft, according to the reliability distribution theory, when the reliability of the system remains unchanged, the more components the system contains, the higher the reliability of a single component is. higher. The composition and structure of aerospace aircraft is complex. To ensure the normal operation of these lar...

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Problems solved by technology

[0005] Aiming at the problem that the existing technology cannot clearly give the reliability evaluation of space radiation as an electronic device, the purpose of the present invention is to provide a set of space radiation reliability evaluation methods for aerospace electronic products, specifically, from exploring the failure mechanism of the device Based on the space particle radiation simulation technology and Monte Carlo method, combined with the existing space radiation environment model, the reliability index of space radiation damage of aerospace electronic devices is obtained, in order to intuitively grasp the space radiation reliability level of products, Provide a reference for the design and optimization of products for the space radiation environment

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