METHOD FOR PREDICTING THE COMFORT EFFICIENCY OF A VEHICLE EQUIPPED WITH A SYSTEM LINKING IT TO THE GROUND

摘要

The invention concerns a method for predicting the comfort efficiency (noise, vibrations) in a vehicle passenger compartment (1) equipped with a prototype system linking it to the ground, said vehicle running at a given speed V on running means (3) comprising at least an obstacle (4) of predetermined dimension on its running surface, said detecting method consisting in: firstly, obtaining a global transfer function of the vehicle equipped with a reference system linking it to the ground by measuring the noise and/or vibration inside the vehicle when the latter is running on the running means provided with obstacle(s) and by measuring the forces at the fixing points of said reference system while the vehicle is running at the same speed V on the same running means provided with obstacle(s); and secondly, in measuring the forces at the fixing points of a prototype system in the same running conditions as those used previously for the reference system; in the first instance, calculating the noise and/or vibration output by multiplying the vehicle global transfer functions by the forces at the fixing points of a prototype system.