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Method for formulating DPM-based space radiation environment reliability indexes

A space radiation environment and reliability technology, applied in the field of space radiation, can solve problems such as not enough to ensure the reliability of satellite space radiation

Active Publication Date: 2014-11-19
BEIJING SHENGTAOPING TEST ENG TECH RES INST
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Problems solved by technology

Therefore, the establishment of a single index is not enough to ensure the reliability of satellite space radiation

Method used

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  • Method for formulating DPM-based space radiation environment reliability indexes
  • Method for formulating DPM-based space radiation environment reliability indexes
  • Method for formulating DPM-based space radiation environment reliability indexes

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0037] The invention provides a DPM-based space radiation environment reliability index formulation method, such as figure 1 As shown, the method includes:

[0038] S1: preset satellite mission indicators, the satellite mission indicators include satellite availability, survival probability and control ratio of space radiation environment reliability;

[0039] According to the satellite availability A in step S1, and the satellite outage time control model DPM is calculated according to the formula (1) 卫星 ,

[0040] DPM 卫星 =(1-A)×10 6 (1)

[0041] where A is satellite availability.

[0042] Classification control is carried out according to the fault classification of the satellite, as shown in Table 1, ω is the contribution ratio of the space radiation environment ...

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Abstract

A method for formulating DPM-based space radiation environment reliability indexes. The method includes: S1. presetting satellite task indexes which include satellite usability, survival probability and a control proportion of space radiation environment reliability; S2: determining task requirement index RSPEC of the space radiation environment reliability indexes according to the satellite task indexes; S3: calculating a design margin RDMreal corresponding to a satellite device according to RSPEC, and comparing RDMreal with risks RDMSPEC receptible to the satellite device for satisfying task reliability, and when RDMreal is larger than RDMSPEC, RDMreal satisfies a task index requirement RSPEC; and S4: using the satellite task indexes of the moment as the space radiation environment reliability indexes of the device. The method in the invention depends on a task to determine a method for calculating space radiation environment indexes, and ensures a space radiation environment reliability requirement of the task.

Description

technical field [0001] The invention relates to the field of space radiation, in particular to a DPM-based method for formulating space radiation environment reliability indexes. Background technique [0002] The harsh space environment experienced by satellites in space mission orbits, background environments such as the Earth’s capture zone, solar event particles, and galactic cosmic rays, as well as high-energy particles (including heavy ions, protons, electrons, etc.) in the dynamic environment under the influence of periodic solar activities will induce The devices in the satellite have charge and discharge effects, single event effects, total dose effects, and displacement damage effects, which lead to satellite failures. Therefore, determining an effective space radiation environment reliability index system is an important factor to ensure the reliability of satellite space environment. [0003] At present, my country's satellite space radiation environment reliabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B17/02
Inventor 王群勇
Owner BEIJING SHENGTAOPING TEST ENG TECH RES INST
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