Electric vehicle electromagnetic interference positioning method based on fault matrix

The invention discloses an electric vehicle electromagnetic interference positioning method based on a fault matrix, and the method comprises the steps: enabling electronic and electrical systems of an electric vehicle to form a system set, and constructing an electric vehicle system electromagnetic fault matrix table; starting the vehicle, enabling all systems to be in a specified working state, and discovering and defining an electromagnetic compatibility fault; respectively enabling a certain part of system to be in a power-off state, observing electromagnetic interference change conditions, representing the electromagnetic interference change conditions by 0 or 1, and filling the electromagnetic interference change conditions into a matrix; and so on, carrying out electromagnetic interference checking of all electronic and electrical systems, and determining a certain system as an interference source. and decomposing the system, adopting a fault matrix method to carry out next-level troubleshooting and fi