Electromagnetic Interference And Electromagnetic Compatibility Analysis And Research Of Airborne Equipment

With the accelerating of the modern society informatization process, the application of all kinds of electrical and electronic equipment, electromagnetic interference becomes ubiquitous, electromagnetic sensitivity of various devices in modern aircraft systems is higher and higher, so electromagnetic compatibility of aircraft equipments is more and more important..The electromagnetic compatibility of airborne equipment has a pivotal role in the design, setting, production and safety of aircraft. The subject of this thesis is chosen according to relevant content of scientific projects, it mainly focuses on the interference paths: crosstalk of cable networks for airborne equipments, Cable sensitivity analysis, electromagnetic compatibility test of airborne equipments.The contents could be summarized as follows:Firstly, the related theory of electromagnetic interference and electromagnetic compatibility are introduced,mainly including the complex electromagnetic environment theory, the electromagnetic interference model, the aircraft electromagnetic environment and the effect analysis.Secondly, the two aspects of the transmission interference and radiation interference of the airborne equipment and wire harness are studied. The calculation method and the calculation model of the crosstalk and electromagnetic sensitivity of the cable wire harness are analyzed, the specific experimental environment of aircraft is analyzed, then, the model of the aircraft and the internal cable is established under the specific experimental environment, and 6 kinds of cable harness crosstalk and 6 kinds of electromagnetic sensitivity were calculated by using the software simulation method, then,the results are analyzed.Finally,gyroscope as test subjects, according to test methods of CE102, the CS101, RE102 in GJB-152A-97 Measurement of electromagnetic and susceptibility for military equipment and subsystems, we have formulated the corresponding test strategy,then carries on the test and analysis of the experimental results.