Fault isolation suspension system based on the train information ds evidence theory fusion

The present invention relates to fault isolation system based on the train information suspending DS theory fusion, the method comprising the steps of: 1) a sensor disposed train body, an acceleration signal and acquires the position of each train operation; 2) to establish a vehicle model, a fault signal is obtained when the train time domain, frequency domain information; 3) established fault signature database of train operation according to the vehicle model, similarity matching operation, to obtain the value of each channel assigned function; 4) according to step 3 evidence obtained was calculated for each letter assignment function value to calculate the basic belief value distribution of the combined effect of all the evidence, the final determination of location and type of fault based on certain decision criteria. Real-time capability of the present invention, the detection unit of simple structure, composed of only an acceleration sensor, is less susceptible to interference of external factors, high reliability of the device.