Patent ID: 7855545

Claim:
A system for clarifying a sinusoidal modulated signal surrounded by noise that is output from a rotating machine to determine whether the machine is malfunctioning, the system comprising: a sensor that senses the sinusoidal modulated signal from the rotating machine, a first oscillator with a first adjustable oscillation frequency that receives the sensed signal and adjusts at least one of its operating coefficients to adjust the first oscillation frequency over time to be approximately the same as a center frequency of the sinusoidal modulated signal, a second oscillator with a second adjustable oscillation frequency that receives the sensed signal and adjusts at least one of its operating coefficients to adjust the second oscillation frequency over time to be approximately the same as a side hand frequency of the sinusoidal modulated signal, the first and second oscillators using a process of dynamic synchronization, in which the noise surrounding the sinusoidal modulated signal pushes the first and second oscillation frequencies in opposite directions over time, to thereby eliminate the noise's impact on the first and second oscillation frequencies, to thereby adjust the first oscillation frequency to be approximately the same as a center frequency of the sinusoidal modulated signal and the second oscillation frequency to be approximately the same as the a side band frequency of the sinusoidal modulated signal, whereby the noise surrounding the sinusoidal modulated signal is reduced so that the sinusoidal modulated signal is clarified.