An extracting method and system for electromagnetic radiation characteristic parameters of apparatuses

Abstract

The embodiments of the invention provide an extracting method and system for electromagnetic radiation characteristic parameters of apparatuses and belong to the technical field of electromagnetic compatibility. The method comprises the steps of determining an electromagnetic interference source of an apparatus; calculating a current of an equivalent circuit of a common mode current circuit of the electromagnetic interference source based on the Kirchhoff laws to obtain a common mode interference current of the electromagnetic interference source; placing an equivalent model obtained through equivalent treatment of the common mode interference current into a three-dimensional model of the apparatus to obtain a target apparatus model; performing three-dimensional electromagnetic simulation on the target apparatus model to obtain a three-dimensional electromagnetic simulation result, wherein an excitation source of the three-dimensional electromagnetic simulation is the common mode interference current; extracting the electromagnetic radiation characteristic parameters of the apparatus from the three-dimensional electromagnetic simulation result. The method and the system solve the problem that only the physical properties of systems and apparatuses in airplanes are analyzed and no analysis for electromagnetic radiation characteristics is performed in the prior art, and realize the analysis of electromagnetic radiation characteristics in airplanes and extracting of the electromagnetic radiation characteristic parameters.

Description

technical field [0001] Embodiments of the present invention belong to the technical field of electromagnetic compatibility, and specifically relate to a method and system for extracting electromagnetic radiation characteristic parameters of equipment. Background technique [0002] Aircraft electromagnetic compatibility is a science that studies the coexistence of various electrical equipment in an aircraft under the conditions of limited space, time and spectrum resources without causing degradation. According to GB / T4765-1995 "Electromagnetic Compatibility Terminology", the definition of Electromagnetic Compatibility (EMC) is: the ability of a device or system to work normally in its electromagnetic environment without causing unacceptable electromagnetic disturbance to the environment . [0003] With the continuous improvement of the performance of the aircraft, the number and types of electronic and electrical equipment on board the aircraft itself are increasing, especi...

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Problems solved by technology

However, these studies are only aimed at its physical properties, and have not studied the electromagnetic radiation characteristics. Due to the complex structure of the internal equipment or systems of the aircraft, if the analysis and extraction of the electromagnetic radiation characteristic parameters are directly performed, the analysis and extraction process will be very complicated. And it leads to long simulation time and heavy calculation memory pressure, which makes the extraction rate of aircraft electromagnetic radiation characteristic parameters low

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