Application of the Coherent Spectrum Method with a Reference Signal in Problems of Diagnostics the State of Technical Equipment

An important place in systems for monitoring the state of technical equipment is taken by the measuring subsystem for collecting and processing data, identification of parameters, and characteristics of signals obtained using various diagnostic and parametric sensors. The frequency components of the measuring signals observed from the sensor outputs may contain important diagnostic features - discrete spectral components of the signal spectrum, stable in frequency, with insignificant random angular modulation. Classical methods of spectral estimation don't allow to detect such diagnostic components. The study considers the use of a new method of a coherent spectrum with a standard for detecting a frequency-stable spectrum with insignificant random angular modulation of the spectral components of the spectrum of the observed signal.