TECHNIQUE OF FORMATION OF SPECTRA OF RANDOM VIBRATION

摘要

mechanical engineering. SUBSTANCE: random narrow-band signals are formed in each band of frequencies of working range. Inherent spectral densities of accelerations in control points are set. Vibration of article in bands of frequencies of working range is created. Values of inherent spectral densities of accelerations are measured in each narrow band of frequencies in control points. Values of squares of moduli of complex transfer functions of vibration paths in control points of article are found. Values of all products of moduli of complex transfer functions of vibration paths in various control points of article are determined in pairs in each narrow band of frequencies. Values of gain factors of amplifiers of former of random narrow-band signals are determined in each band of frequencies of working range by values of inherent spectral densities of accelerations, by values of squares of moduli of complex transfer functions of vibration paths in control points of article in each narrow band of frequencies and of all products of moduli of complex transfer functions of vibration paths in various control points of article computed in pairs and under condition that moduli of mutual spectral densities of accelerations in various control point of article reach minimum values in each band of frequencies of working range. EFFECT: increased quality of formation of spectra. 1 dwg