Patent ID: 8600687
Filing Date: 2013-12-03
Classification: G01R

Abstract:
1. A signal analyzer comprising: a sampling unit operable to sample a time domain signal from a target system according to a predetermined sampling frequency to obtain a sampling signal; a filter unit coupled to said sampling unit and configured with at least one energy storage component having an initial value to perform filter processing according to the initial value of said at least one energy component and a filter parameter set that is determined based upon an initial fundamental frequency parameter and a bandwidth parameter, which are associated with the sampling signal outputted by said sampling unit, so as to filter out harmonic frequency components from the sampling signal, thereby obtaining a fundamental frequency signal having a plurality of sample points; a computing unit coupled to said filter unit and operable to compute a signal parameter set for each of temporally adjacent pairs of the sample points of the fundamental frequency signal; and an output unit coupled to said computing unit and configured to output information about dynamic behavior of the target system based upon the signal parameter sets computed by said computing unit.