METHOD TO SEARCH FOR FAULTY BLOCK IN DISCRETE DYNAMIC SYSTEM Russian patent published in 2013 - IPC G05B23/02 

FIELD: information technologies.

SUBSTANCE: previously a reaction of a knowingly good system is registered for discrete beats of diagnostics with discrete permanent pitch in the observation interval at reference points, and integral estimates of output signals of the discrete system are determined. For this purpose at the moment of test signal supply to the inlet of the discrete system with rated characteristics, simultaneously discrete integration of control system signals is started with the pitch in seconds in each of the reference points with discrete weights, by supplying of control system signals to the first inlets of the multiplication blocks. A discrete exponential signal is supplied to the second inputs of the multiplication blocks with the pitch in seconds, output signals of the multiplication blocks are supplied to the inputs of the discrete integration blocks with the pitch in seconds, discrete integration is completed at the moment of time. Estimates of output signals produced as a result of integration are registered. The number of the system blocks is fixed, elements of topological links of each block within the discrete system for each reference point are determined, elements are determined from many values {-1,0,1}, the value - 1 is defined, if the sign of signal transfer from the output of the i block to the j reference point is negative. The value 0 is determined, if signal transfer from the output of the i block to the j reference point is not available, the value 1 is determined, if the sign of signal transfer from the output of the i block to the j reference point is positive. Then the rated values of the vector of topological links for each block are defined, the system with rated characteristics is replaced with the controlled one, an identical test signal is supplied to the system inlet. Integral estimates of signals of the controlled discrete system are determined for reference points for a parameter of discrete integral conversion, deviations of integral estimates of signals of the controlled discrete system are defined for reference points from rated values. Rated values are determined for deviations of integral estimates of signals of the controlled discrete system, diagnostic criteria are determined, by the minimum of the value of the diagnostic criterion a serial number of a defect block is determined.

EFFECT: possibility to use the method to search for defects in a discrete dynamic system with arbitrary connection of blocks.

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