Accession Number : AD0657010

Title :   OPTIMUM MAINTENANCE WITH INCOMPLETE INFORMATION,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Eckles,James E.

Report Date : AUG 1967

Pagination or Media Count : 29

Abstract : An analysis of the maintenance of systems with randomly decreasing performance levels that can be estimated only by costly imperfect inspection. A model is developed to determine the sequence of actions that minimizes the total cost of operation. Unlike most investigations, the study treats maintenance as a sequential decision process. This view leads to the consideration of maintenance policies in which corrective and inspection schedules are dependent on the results of recent inspections. A dynamic-programming technique is used to derive a functional equation for the optimum maintenance policy. It is shown that an optimum action (replacement, repair, inspection, etc.) is determined by the system's age and the posterior distribution over the system's states. Simple policies such as periodic inspection are readily seen to be nonoptimal in the face of irregular deterioration. (Author)

Descriptors :   (*AIR TO AIR MISSILES, RANDOM VARIABLES), (*MAINTENANCE, *COSTS), PERFORMANCE(ENGINEERING), DYNAMIC PROGRAMMING, MATHEMATICAL MODELS, STOCHASTIC PROCESSES, EQUATIONS, AGING(MATERIALS), DETERIORATION, PROBABILITY, OPTIMIZATION

Subject Categories : Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE