Airborne equipment electromagnetic compatibility grading method based on unascertained measurement theory

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.

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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Problems solved by technology

However, due to the diversity, complexity, and ambiguity of the factors that determine the electromagnetic compatibility of airborne equipment, there is no consensus on the method of evaluating the electromagnetic compatibility level of airborne equipment at home and abroad.

[0003] At present, the evaluation of electromagnetic compatibility of airborne equipment generally adopts the national military standard (GJB151 series) electromagnetic compatibility testing test. By comparing the test results with the standard limit value to judge whether the equipment meets the electromagnetic compatibility, there are only two grades: pass and fail, except for special In addition to the out-of-tolerance handling of the situation, generally the airborne equipment assembled on the aircraft has passed the inspection test, but after the assembly together, the electromagnetic interference between the equipment often occurs, and it is insufficient to carry out the adjustment design at this time. basis for design

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