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Preventive maintenance with imperfect repairs of a system with redundant objects

Okulewicz J., Salamonowicz T.

Journal of KONBiN

2008

No. 5 (8)

157-170

An object ability to realise tasks may be restored by repairing only failed components. This is called imperfect repair, as the object is not as good as new after such a repair. Preventive replacement is an example of imperfect repair as well. The advantage of such maintenance is that it enables controlling a reliability level of a system. Sets of objects' components that should be replaced are derived on a basis of statistical diagnosing with use of data about components failures. The acceptable level of a failure risk while executing transportation tasks has been taken as a criterion of choosing elements to be replaced. An algorithm of selecting components for preventive replacement has been developed. It was shown that a level of system reliability could be controlled by changing an order of a quintile function in coordination and a number of redundant objects. A computer simulation model of the system was used to illustrate derived dependencies.

Przedmiotem artykułu jest metodyka obsługiwania prewencyjnego systemów technicznych z nadmiarem, z uwzględnieniem możliwych błędnych procesów obsługowych.