Method for controlling the quality of industrial processes and system therefrom

A method for controlling the quality of an industrial process, of the type comprising the steps of:

• making available one or more reference signals relating to the industrial process;
• acquiring one or more real signals, indicative of the quality of said industrial process;
• comparing, using a processing unit, said one or more reference signal to said one or more real signals to identify defects in said industrial process, said comparing operation including:
• obtaining a real part and an imaginary part from said reference signal;
• and
• obtaining a real part and an imaginary part from said real signal;
• wherein said comparing operation further comprises the operations of:
• computing first comparison quantities by performing a comparison between values of said real part and of said imaginary part from said reference signal;
• computing second comparison quantities by performing a comparison between values of said real part and of said imaginary part from said real signal;
• and
• comparing said first comparison quantities and said second comparison quantities to obtain time location information associated to the presence of defects.