CYCLICAL METHOD AND A DEVICE FOR LOCALIZING UNCONTROLLABLE MULTIPLE FAILURES IN ENGINEERING SYSTEMS IN OPERATION

摘要

A method and device improve efficiency, depth and reliability of diagnosing technical condition of highly complex objects. The technical effect is achieved by signals received from a diagnosed object (DO). These signals are transformed into a technical condition initial estimate vector for the DO elements. Then, technical condition estimates for the OD elements are specified through a cyclical process and by using a reverse logical model and a direct logical model. A technical condition vector estimate is formed after the cyclical process is completed, and its variable components are used for deciding on technical condition of the diagnosed object elements. The device comprises an interface unit which inputs serve for connecting to the DO data outputs, a measuring unit, an initial estimate forming unit, a switching unit, a reverse triplex logical model and a direct triplex logical model, a result interpretation unit and a control unit.

主权项

1. A cyclical method for localizing uncontrollable multiple failures in engineering systems in operation, consisting in that signals from a diagnosed object are received; a failure manifestations vector with Boolean elements is determined on their basis; a technical condition initial estimate vector is formed from the failure manifestations vector with the use of an exit matrix canonizer for the diagnosed object elements, said estimates giving triplex values “operable”, “non-operable”, “condition not determined”; using a triplex logical model of reverse dependency applying a reverse dependency matrix, the technical condition estimate vector for the diagnosed object elements is specified cyclically, until estimates either do not change, or until a preset number of tacts are performed; then, values “condition not determined”, as obtained for elements of the technical condition estimate vector, are specified on the basis of a triplex logical model of failure propagation direct dependency, said model using a logical matrix of direct dependency; and, after that, a final value of the technical condition estimate vector is issued for the diagnosed object elements.