Design Method of Reliability Index of Space Radiation Environment

Abstract

The invention relates to a method for designing a reliability index of a space radiation environment, in particular to a design method for improving the reliability of a spacecraft by designing the failure rate of the space radiation environment effect of a spacecraft; it includes a calculation module for the failure rate using a total dose effect Calculate the total dose effect failure rate of the spacecraft; use the displacement damage effect failure rate calculation module to calculate the displacement damage effect failure rate of the spacecraft; use the single event effect failure rate calculation module to calculate the single event effect failure rate of the spacecraft. Calculation; input the calculated total dose effect failure rate, displacement damage effect failure rate and single event effect failure rate into the space radiation environmental effect failure rate calculation module for calculation, and obtain the space radiation environmental effect failure rate of the spacecraft. The design method of the present invention is helpful for reliability analysis of the spacecraft electronic system and guidance of the optimal design, and further reduces the design and implementation cost of aerospace engineering.

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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