Evaluation Model and Method of Margin in Electromagnetic Environmental Effects for Complex Systems

Abstract

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.

Interference Response Prediction of Receiver Based on Wavelet Transform and a Temporal Convolution Network

“…When the spectrum allocation is not appropriate, the RF transmitting/receiving equipment between the platforms may cause mutual interference. In other words, we commonly refer to this as the electromagnetic compatibility issue within the ship formation [3,4]. To ensure electromagnetic compatibility within the system, it is crucial to establish a behavioral model for radio frequency devices and predict their operational conditions under potential interference.…”

Equipment Asset Management and Equipment Health Based on Fuzzy Algorithm Evaluation Model

“…And equipment asset management is one of the most important aspects of enterprise fixed asset management. Equipment asset management is important for the sustainable and healthy development of manufacturing enterprises, not only the management process is closely related to multiple links, but also involves the participation of several departments, such as planning, economic management, manufacturing, and procurement [6,7]. Equipment asset management is a process management mode, which requires the tacit cooperation of relevant departments to achieve effective management.…”