Пристрій для вимірювання частоти обертання вала і діагностування електромеханічних систем

Abstract

The proposed device for measuring shaft frequency rotation and for diagnostics of electromechanical systems contains a unit for determining a cross-correlation function and time delay of signals, a unit for determining the shaft rotation frequency, and additionally, two piezoelectric accelerometers with the sensitivity axes that are arranged perpendicular to each other, two electrometric amplifiers, and two band-pass filters. The outputs of the accelerometers are connected to the corresponding inputs of the amplifiers. The outputs of the amplifiers are connected, via the corresponding band-pass filters, to the inputs of the unit for determining the cross-correlation function and time delay of signals.