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Establishment Method of Space Radiation Environment Reliability Index Based on dpm

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: 2016-08-17
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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  • Establishment Method of Space Radiation Environment Reliability Index Based on dpm
  • Establishment Method of Space Radiation Environment Reliability Index Based on dpm
  • Establishment Method of Space Radiation Environment Reliability Index Based on dpm

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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 to t...

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Abstract

A DPM-based method for formulating space radiation environment reliability indicators, said method comprising: S1: preset satellite mission indicators, said satellite task indicators including satellite availability, survival probability and control ratio of space radiation environment reliability; S2 : Determine the mission requirement index R of the space radiation environment reliability index according to the satellite mission index SPEC ;S3: according to R SPEC Calculate the design margin RDM corresponding to the satellite device real , and compare the RDM real and satellite components meet acceptable risk RDM for mission reliability SPEC ; when RDM real greater than RDM SPEC , then the RDM real Satisfy the task index requirements R SPEC ; S4: Take the satellite mission index at this time as the space radiation environment reliability index of the device. The invention ensures the reliability requirements of the space radiation environment of the task by determining the calculation method of the space radiation environment index based on 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...

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Application Information

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