Adaptation and Extension of Test Procedures

The research project „Adaptation and Extension of Test Procedures for Air Vehicles to Test Procedures of Automobiles in a Network Environment, funded by the “Bundesministerium für Verkehr und Digitale Infrastruktur” and with Daimler AG and Airbus as associated partners, is a topic within the area of Electromagnetic Compatibility (EMC). It is based on the ongoing advances of wireless communication systems in autonomous driving, whose function under the influence of electromagnetic disturbances has to be assured.

The research projects’ goal is to partly substitute common automotive susceptibility tests via antennas, so-called HIRF tests (HIRF = High Intensity Radiated Field), by an alternative EMC test procedure which already is established in avionics. Here the surface of a system under test is directly excited with currents being equivalent to the effect of a radiated susceptibility test. This is the concept of so-called DCI-tests, (DCI = Direct Current Injection). For this purpose, the equivalence of HIRF- and DCI tests is first to be verified numerically by Characteristic Mode Analysis. Subsequently, suitable adapters for current injection are to be designed, which enable an economically feasible realization of DCI tests. In order to include statistically distributed system parameters in these tests, such as aging effects or other random events, a mathematically appropriate description has to be developed.