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LET value variable adaptive fitting method for system function interruption cross section

A system function and cross-section fitting technology, applied in the field of system single-particle soft error protection evaluation, can solve problems such as the inability to establish analysis models, and achieve the effects of optimizing the single-particle test process, improving evaluation efficiency, and saving costs.

Active Publication Date: 2018-04-17
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

The above method is aimed at system design with complex structure, and cannot establish an analysis model based on equivalent irradiation test to realize dynamic single particle test data analysis

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  • LET value variable adaptive fitting method for system function interruption cross section
  • LET value variable adaptive fitting method for system function interruption cross section
  • LET value variable adaptive fitting method for system function interruption cross section

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Embodiment Construction

[0045] Usually, the core components of the aerospace system, the internal sensitive components of which are exposed to single-event radiation, cause soft errors. Through the propagation coupling between the system functional modules, the output errors of key data signals that can be manifested as functions at the system level will eventually lead to system function failures. Panic, this error condition is usually interpreted as a functional interruption. This method is based on the digital signal processing system constructed by the SRAM type FPGA device, and the design resources associated with the configuration storage area and the internal sequential logic circuit are the single event effect sensitive components, and the LET-system function interruption cross section based on the system function interruption frequency function is established. Adapt to the change model to obtain the relationship between the LET value within the saturated LET threshold and the system function ...

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Abstract

An LET value variable adaptive fitting method for a system function interruption cross section comprises the parts that within the saturated LET threshold range, the system function interruption crosssection of any LET value is fit under internal circuit module protection configuration and the system function interruption cross section of a fixed LET value is fit under the system level protectionconfiguration. In each of the two parts, known test data is utilized, the system interruption cross-section value under a specific LET value is obtained by fitting within the saturated LET threshold,single particle irradiation test is less dependent on data, tension between supply and demand of a testing machine can be alleviated, a single-particle test process is optimized, and anti-SEU evaluation efficiency of a system is improved.

Description

technical field [0001] The invention belongs to the technical field of system single event soft error protection evaluation. Background technique [0002] Usually, the single event reliability design of the system needs to rely on the single event irradiation test to obtain the corresponding change curve data of the LET value and the system function interruption section under different ion energy spectra, and then use the Weibull function to fit the test data to evaluate the spacecraft system. Rails Predict Single Event Reliability Design. However, due to the limitation of domestic accelerator test conditions, the current accelerators cannot effectively meet the needs of aerospace applications, whether they are in the test machine or in the energy spectrum of high-energy particles that can reach the effective silicon surface range. How to effectively obtain test data is imminent. [0003] The current related technology research is divided into two focuses. One focus is to c...

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Application Information

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IPC IPC(8): G01R31/3185G01J5/22
CPCG01J5/22G01R31/318519
Inventor 高翔赖晓玲朱启王建周国昌
Owner XIAN INSTITUE OF SPACE RADIO TECH
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