Open AccessEvaluation Model and Method of Margin in Electromagnetic Environmental Effects for Complex Systems
Author(s) -
Shiping TANG,
Junfa MAO
Publication year - 2021
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2020.12.006
Subject(s) - margin (machine learning) , electromagnetic compatibility , computer science , reliability engineering , time domain , control theory (sociology) , engineering , electronic engineering , artificial intelligence , control (management) , machine learning , computer vision
Margin is an important index in the control of Electromagnetic environmental effects (E3) and Electromagnetic compatibility (EMC) design for systems. How to define and verify the E3 margins of complex systems such as ships and airplanes is a difficult problem. A new method of system‐level E3 margin evaluation is proposed. Based on the theory of fault tree, the evaluation model of system‐level margin is constructed. The complex system function is transformed into the equipment and subsystem that affect the function, and the relationship between margin of system‐level and equipment is established. The change from margin of equipment to system‐level margin is realized. According to the action process of Electromagnetic environment (EME), the verification and evaluation methods of EME domain, response domain and effect domain are put forward. The margin calculation formula of EME domain and typical electromagnetic energy coupling response are deduced. The problem of margin evaluation for equipment under different input parameters is solved. A typical application example is given. The verification test scheme is designed. The methods of electromagnetic energy radiation and injection are adopted. The system‐level margin is analyzed by the data obtained from the effective test verification. The results show that the model and method are reasonable and feasible.