Study On Test Methods And Criteria For Radiated Susceptibility Of Vehicle Electrical/elctronic Components

With global sustained development of the automotive industry and the continuous increase of vehicle electrical/electronic components’ categories, quantity and technological content, the requirement for vehicle components’ EMC testing has been tremendously growing. As an important index of vehicle components’ EMC function, radiated susceptibility test has attracted the attention from many vehicle and component manufacturers. However, the current testing methods can hardly be harmonized because of the large variety of test methods and technology barrier among vehicle manufacturers’ product standard. If an equivalent coefficient indicating the relation of radiated susceptibility’s influence could be established by a radiated susceptibility evaluation system, a considerable amount of problems would be solved in part during the research and development process of components manufacturer.The feasibility of the comparison among the four test methods has been demonstrated and a dummy sample which was made for taking the place of a real device under test was tested by four coupling methods of radiated susceptibility test after a theoretical study of relative testing standards, a research of radiated susceptibility testing methods and an analysis of similarities and differences among the four coupling methods. The parameter- unit influence coefficient was introduced by analysis and calculation of the testing data from the dummy sample to establish an equivalent relation of radiated susceptibility testing methods on several testing frequency points which would offer more reasonable directive opinions during vehicle components’ radiated susceptibility test.