Airborne equipment electromagnetic compatibility grading method based on unascertained measurement theory

A technology of electromagnetic compatibility and airborne equipment, which is applied in the direction of testing electrical devices in transportation, measuring electricity, measuring electrical variables, etc., can solve the problems of lack of design basis, complexity, failure, etc., to improve the efficiency and cost ratio , the physical meaning is clear, the effect of reducing uncertainty

CN113049900AActive Publication Date: 2021-06-29BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-06-29

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Abstract

The invention discloses an airborne equipment electromagnetic compatibility grading method based on an unascertained measurement theory. The method comprises the following steps of S1, measuring the grading evaluation indexes of the electromagnetic compatibility of airborne equipment, and building a grading evaluation index set; S2, establishing a measurement function of grading evaluation indexes by applying an uncertain measurement theory; S3, solving a single index evaluation matrix of the electromagnetic compatibility of the airborne equipment; S4, solving a grading evaluation index weight of each electromagnetic compatibility by using an information entropy method; S5, solving the comprehensive attribute measure of each airborne device; S6, solving quantitative grading or classification of the electromagnetic compatibility of the airborne equipment on the airplane; and S7, obtaining the electromagnetic compatibility design priority and design weight of the airborne equipment. According to the method, the cross correlation of evaluation indexes is low, the evaluation indexes can be measured and examined, the evaluation indexes can serve as a priority strategy for system-level electromagnetic compatibility index distribution, and a theoretical basis is provided for quantitative design of electromagnetic compatibility of the whole aircraft system.
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Description

technical field

[0001] The invention relates to the field of electromagnetic compatibility, in particular to an electromagnetic compatibility grading method for airborne equipment based on an unascertained measure theory. Background technique

[0002] Electromagnetic compatibility refers to the ability of electronic and electrical equipment to work compatible with each other in its expected electromagnetic environment. When the airborne equipment on the aircraft platform causes intricate electromagnetic mutual interference problems due to resource conflicts of "time, space, frequency, and energy", the current Generally, the empirical method is used to select individual equipment nodes one by one for adjustment and control. Because the subjective design method based on experience, such as "one hair can move the whole body", is very easy to cause more complicated mutual interference problems due to improper selection, so it is necessary to make electromagnetic compatibility of ...

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Embodiment Construction

[0026] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0027] Uncertain information is a new kind of uncertain information. The present invention can effectively avoid the influence of human subjective factors. The evaluation process is simple and the result is accurate. Firstly, each evaluation index is constructed according to the characteristics of airborne equipment (also can be used for sub-systems) The unascertained measurement value of each evaluation index is determined by the single-measure index function; then the weight of the factors affecting the electromagnetic compatibility of airborne equipment / subsystems is calculated by using the entropy weight method; finally, the confidence criterion is used to distinguish and classify.

[0028] The EMC graded evaluation index set of airborne...