Margin Analysis and Confident Reliability Evaluation Method of Electromagnetic Performance of Avionics Products
A kind of avionics and reliability technology, applied in the direction of electronic digital data processing, instrumentation, design optimization/simulation, etc., can solve the problems of cognitive ability limitations, insufficiency, cognitive uncertainty, etc.
Active Publication Date: 2022-05-10
BEIHANG UNIV
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The other is the cognitive uncertainty caused by the limitation of human cognitive ability and insufficient knowledge, information or fault data.
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[0078] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.
[0079] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0080] figure 1 The method for establishing the reliability margin equation or margin model of the aerospace agency product of the present invention is shown, and the method includes the following steps:
[0081] S1. System analysis, clarify the functional structure of avio...
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The invention provides a method for analyzing the electromagnetic performance margin of avionics products and evaluating the certainty reliability. The method includes: system analysis, clarifying the functional structure of avionics products, the logical relationship of the system, and the electromagnetic environment around key components and avionics products, and obtaining Electromagnetic environmental stress on avionics; determine the key performance parameters and thresholds of avionics products; determine the weak link factors of avionics products; establish the performance considering the uncertainty of internal and external parameters by quantifying the influence of internal and external parameters on key performance parameters Margin model; conduct confident reliability assessment and calculate certain reliability. From the perspective of electromagnetic performance parameters, the invention determines the weak link factors in the electromagnetic environment of avionics products, provides guidance for the design improvement of avionics products, considers the influence of failure process on electromagnetic performance parameters, and uses the uncertainty of internal and external factors To quantify the system uncertainty and complete the system's sure reliability evaluation.
Description
technical field [0001] The invention belongs to the technical field of confident reliability evaluation, in particular to an electromagnetic performance margin analysis and sure reliability evaluation method of avionics products. Background technique [0002] The electromagnetic environment refers to various conduction and radiation electromagnetic emissions that may be encountered when an electronic system performs specified tasks in a given working environment. Electronic products are susceptible to electromagnetic interference from various sources of electromagnetic interference. Under electromagnetic interference, electronic equipment may experience temporary misoperation or dysfunction, and in severe cases, permanent degradation or even failure of working performance may occur, reducing product reliability. , and shorten product life. The ability of electronic products to respond to the electromagnetic environment is called electromagnetic performance. This ability is ...
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IPC IPC(8): G06F30/20G06F111/04G06F111/08G06F119/02G06F119/14
CPCG06F30/20G06F2119/02G06F2119/14G06F2111/04G06F2111/08
Inventor 陈颖王艳芳初巧慧康锐
Owner BEIHANG UNIV