DEVICE TESTING ARTICLES FOR RANDOM LOADS Russian patent published in 1997 - IPC

FIELD: testing equipment. SUBSTANCE: sequence of pulses is fed under mode "tuning" to inputs of forming filters 4, signals from outputs of analyzing filters 14 go through peak detectors 15, 16 and analog-to-digital converter 20 to input of computing-controlling unit 21 where gain factors of forming channels are calculated by measured and specified values of spectrum of simulated random vibrations. Thus tuning is conducted by results of harmonic analysis. In this case statistic error is practically excluded. Noise generator 1 is connected to input of forming filters under mode "test". Signals from outputs of analyzing filters 14 go to input of computing-controlling unit 21 through amplitude detectors to check level of simulated random vibrations. EFFECT: increased accuracy of simulation of random vibrations due to prevention of statistic error. 1 dwg