EMI Conducted Emission Singnal Analysis Based On ICA Algorithm

With the rapid development of electronic science and technology, a large number of electronic equipment has been widely used in various fields of the society. But due to the electronic devices in the work when the electromagnetic wave will pass cable coupling and space radiation on the electromagnetic interference with other electronic equipment, as well as influenced by external electromagnetic interference, resulting in equipment performance and electromagnetic information leakage, so the electromagnetic compatibility (EMC) has received more and more attention. Many countries has established EMC standards. Space electromagnetic interference is mainly divided into the conducted interference and interference, interference conduction emission as an important index in the electromagnetic compatibility problem, how can suppress jamming conducted emission of low cost, high efficiency has become an important research subject.Independent Component Analysis (ICA) from multiple observations for the statistical independence and non-gaussian factor a blind source separation technique. This technique because of its unique theory of signal analysis system, information mining, signal feature extraction, so in many research areas such as communication information system signal analysis has caused the great interest of many researchers at home and abroad.Pattern Recognition (Pattern Recognition), also known as Pattern classification, it is to contain representations of things or phenomena by using proper disposing and analyzing all kinds of information (this information is usually through numeric, character as well as a variety of reactions) in the form of a logical relationship, to further describe, identify, categorize, and explained the process of things or phenomena, which is an important part of information science and artificial intelligence. Currently has been widely applied in image signal recognition, voice signal recognition and classification of voice signal, signal recognition, computer aided fault diagnosis, data mining and other fields.Based on ICA algorithm based on the combination of modern pattern recognition technology, the conducted emission signal is analyzed, and the conducted emission signal of the differential mode and common mode component were proposed through the effective separation of a whole set to launch signal solution of electromagnetic interference. They can maximumly reduce the economic cost, implementation technology and economic integration, to solve the problem of electromagnetic compatibility has high social and economic value.