Identification of the sources of radiated electromagnetic disturbances in mobile robots

The article describes the development of the method for locating sources of radiated electromagnetic disturbances generated in the units of some specific class of mobile robots. In the analyzed case, the source of disturbances was a radiating slot, that has formed due to poor electromagnetic tightness of the housing, which caused a negative result of radiated emission tests. The slot was created artificially in the shielded housing in order to simulate the actual problem. The paper describes the testing method and the configuration and construction of the test stand for locating sources of disturbances using an EMC scanner placed in a dedicated EMC testing chamber with ferrite plates covering the walls inside.