Method for designing reliability index of space radiation environment

Abstract

The invention relates to a method for designing the reliability index of a space radiation environment, in particular to a method for designing the space radiation environment effect failure rate of a spacecraft to improve the reliability of the spacecraft. The method comprises the steps that a total dose effect failure rate calculation module is used for calculating the total dose effect failure efficiency of the spacecraft; a displacement damage effect failure rate calculation module is used for calculating the displacement damage effect failure rate of the spacecraft; a single-particle effect failure rate calculation module is used for calculating the single-particle effect failure rate of the spacecraft; the calculated total dose effect failure rate, the displacement damage effect failure rate and the single-particle effect failure rate are input into a space radiation environment effect failure rate calculation module to be calculated, and the space radiation environment effect failure rate of the spacecraft is obtained. According to the method for designing the reliability index of the space radiation environment, the reliability analysis and optimization design guidance of an electronic system of the spacecraft can be facilitated, and the design and implementation cost of aerospace engineering is further lowered.

Description

technical field [0001] The invention relates to a design method of a space radiation environment reliability index, in particular to a design method for improving the reliability of a spacecraft by designing the space radiation environment effect failure rate of a spacecraft. Background technique [0002] At present, when the electronic system and the devices used in the spacecraft are operating in outer space, they are affected by the space radiation environment for a long time, which will cause changes in the electrical parameters of the spacecraft, especially some radiation-sensitive devices in the spacecraft, and serious It can even malfunction due to radiation. Therefore, how to avoid this situation in the initial design and manufacture of the spacecraft is an urgent need to be solved in the field; the most common method is to introduce the means of calculating and judging the failure rate; calculate the spacecraft’s failure rate by simulating the space radiation enviro...

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Problems solved by technology

Therefore, how to avoid this situation in the initial design and manufacture of the spacecraft is an urgent need to be solved in the field; the most common method is to introduce the means of calculating and judging the failure rate; calculate the spacecraft’s failure rate by simulating the space radiation environment on the ground. The failure rate of the reliability index is used as an indicator of the reliability of the space radiation environment to judge the reliability of the spacecraft during space operation; however, the failure rate of the reliability index of the spacecraft is currently based on a single intrinsic failure characteristic parameter Said that the failure rate of the space radiation environment of spacecraft that links the traditional reliability index failure rate with each other, systematically establishes a reliability management system, and can reflect the reliability of the space radiation environment of the spacecraft as a whole; therefore, it is impossible to do To accurately and appreciably judge the reliability of the spacecraft, the reliability analysis and optimization design of the spacecraft cannot be better improved, which objectively restricts the design and production level of the spacecraft

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