METHOD OF DETERMINING OPTIMUM PERIOD FOR MAINTENANCE OF COMPLEX ENGINEERING SYSTEMS WITH LIMITED RESOURCES Russian patent published in 2011 - IPC G07C3/08 

FIELD: information technology.

SUBSTANCE: parameter or group of parameters which uniquely characterise the technical state of an article with known upper and lower tolerance limits, respectively, are selected; said parameters are measured in a defined time interval; learning sampling of data is used to construct a mathematical model of parameters of the article having a polynomial type, calculation of coefficients of which is carried out using a method for group accounting for arguments; adequacy of the model is checked; for each of the time intervals formed beforehand the probability value of fail-safe operation is calculated based on failure to reach the limiting state on the key parameter; values of relative wasting of the service life of the article are found; values thereof are compared with a value obtained in the previous given time interval, and if the first of said values is less than the previous value, the second value is deleted, and the process is repeated until obtaining a new value, otherwise the previous value of the given time interval is recorded and relative wasting of the service life of the article is calculated. The beneficial effect of using this method lies in that the disclosed method enables to avoid the need to set the law of variation with time of the failure rate of the article and when calculating the optimum period for maintenance of the article, actual data on the current technical state of the article are used.

EFFECT: high accuracy of determining the optimum period for maintenance, low value of relative wasting of the service life of the article owing to use of operating methods based on the state with parameter control.

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