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As for the common low-frequency roll vibration signals in the fields of mechanical vibration and fault diagnosis, the negative frequency interference is an important factor to influence the precision of spectrum analysis and correction. In order to eliminate the negative frequency interference, a new method for the analysis and correction of extremely low frequency signal based on wavelet transformation...
In order to achieve a high precision flow measurement and to improve its dynamic response speed of the mass flowrate, it is important to calculate the phase difference of the two sensor output signals accurately and to track its variation in time. The phase difference tracking methods in studying Coriolis mass flowmeter at home and abroad are described comprehensively, and seven main methods were...
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