METHOD OF SEARCHING FOR FAULTS IN DYNAMIC UNIT IN CONTINUOUS SYSTEM Russian patent published in 2012 - IPC G05B23/02 

FIELD: physics.

SUBSTANCE: reaction of a properly operating system to an input action is first recorded on an interval at control points at discrete moments in time; output signals of a model for each of the control points obtained as a result of trial deviations of parameters of all units are determined, for which trial deviation is successively introduced into each transfer function parameter for all units of the dynamic system and output signals of the system are found for the same input action; the resultant output signals for each of the control points and each of the trial deviations at discrete moments in time are picked up; deviations of signals of the model, which are obtained as a result of trial deviations of corresponding parameters of all structural units from the reaction of the properly operating system are determined; the system with nominal characteristics is replaced with the controlled system; a similar test signal is transmitted to the input of the system; signals of the controlled system for control points at discrete moments in time are determined; deviations of signals of the controlled system for control points at discrete moments in time from nominal values are determined; diagnostic features for each of the parameters are determined from the relationship; a faulty parameter is determined from the minimum value of the diagnostic feature.

EFFECT: improved noise-immunity of the method of searching for parametric defects in continuous automatic control systems by improving distinguishability of defects and broader functional capabilities of the method of finding faults in form of deviations of transfer function parameters of units of an arbitrary structure in a dynamic system with arbitrary connection of units.

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