FIELD: radio engineering, communication.
SUBSTANCE: method includes measuring the reaction of a properly operating system on an interval at control points and repeatedly determining (simultaneously) integral estimates of output signals of the system for integration parameter values via, at the moment of transmitting a test signal to the input of a system with nominal characteristics, simultaneously beginning integration of control system signals for integration parameters at each control point with weights by transmitting control system signals to first inputs of multiplier units, transmitting, to second inputs of the multiplier units, exponential signals for integration units; transmitting output signals of the multiplier units to inputs of the integration units; completing integration when estimates of output signals obtained from integration are recorded; determining integral estimates of model signals for each control point and integration parameters resulting from test deviations for single and multiple defects of units, for which a test deviation parameter of the transfer function is alternately input into each unit or combination of multiple units of a dynamic system and integral estimates of system output signals for parameters and the test signal are found; recording estimates of output signals for each control point, each test deviation and each integration parameter resulting from integration; determining deviation of integral estimates of model signals resulting from test deviations of combinations of parameters of different structural units; determining normalised values of deviations of integral estimates of model signals resulting from test deviations for single and multiple defects for integration parameters; replacing the system with nominal characteristics with the inspected system; transmitting a similar test signal to the input of the system; determining integral estimates of signals of the inspected system for control points and for integration parameters; determining deviation of integral estimates of signals of the inspected system for control points and integration parameters from nominal values; determining normalised values of deviations of integral estimates of signals of the inspected system for integration parameters; determining diagnostic features for integration parameters; determining the serial number of the defective unit or combination of defective units from the minimum value of the diagnostic feature.
EFFECT: broader functional capabilities of the method of finding one or simultaneously multiple faulty units in a dynamic system with arbitrary connection thereof, improved noise-immunity of the method of diagnosing continuous automatic control systems by improving distinguishability of defects.
1 dwg
