Resynchronization of temporally acquired engine signals

A method of controlling an engine, wherein a signal characterizing operation of the engine is acquired from a sensor associated with the engine and the signal is synchronized with a periodic event of the engine, comprising:

• producing a first series of samples by digitizing and sampling the signal at different times;
• acquiring a synchronization signal indicative of a reference time that is a function of the periodic event of the engine;
• measuring a time difference between the reference time and a most recent sample of the first series of samples;
• calculating coefficients of a fractional digital filter for providing compensation for the time difference wherein the coefficients permit obtaining a fixed time compensation precision;
• applying the first series of samples to the fractional digital filter with the calculated coefficients to obtain a second series of digitized samples rescaled from the reference time;
• and
• controlling the engine according to the second series of samples.