The aim of this thesis is to provide an integrated real-time control system for resistance spot welding (RSW) in FCA plants, where I began my internship in March. This project is suggested by a colleague of Manufacturing quality who purposed to eliminate statistical ultrasonic and hammer/chisel control, which are both too expensive for the production, due to the fact that they require expert and trained workers. Statistical control is mainly used to evaluate RSW process deviation and to eventually set up the machine in order to correct it. However, this system is not always able to find out all the incorrect points of the vehicles, causing excessive noise and vibration problems during the vehicle test.