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Markov Maintenance Models with Repair.

Author: Yukio Hatoyama; STANFORD UNIV CALIF DEPT OF STATISTICS.
Publisher: Ft. Belvoir Defense Technical Information Center 05 AUG 1976.
Edition/Format:   Book : English
Database:WorldCat
Summary:
In this study discrete time finite state Markov maintenance models are investigated. In each model, a machine is assumed to be operating over time with its condition deteriorating as time goes on. The state of the machine is observed at the beginning of a period. An operating machine can be sent to a repair shop at this time, whereas a failed machine must be repaired. When a machine is being repaired, the number of  Read more...
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Document Type: Book
All Authors / Contributors: Yukio Hatoyama; STANFORD UNIV CALIF DEPT OF STATISTICS.
OCLC Number: 227439929
Description: 84 p.

Abstract:

In this study discrete time finite state Markov maintenance models are investigated. In each model, a machine is assumed to be operating over time with its condition deteriorating as time goes on. The state of the machine is observed at the beginning of a period. An operating machine can be sent to a repair shop at this time, whereas a failed machine must be repaired. When a machine is being repaired, the number of time periods that it is unavailable is usually assumed to have a geometric distribution. A repaired machine becomes available in its best state. An operating cost is charged while a machine is operating, and material and labor costs are charged when it is being repaired. The objective is to find a policy which minimizes the total expected alpha-discounted cost or the long-rung average cost. Special emphasis is being placed on finding sufficient conditions to assure that a control limit policy is optimal. The aforementioned model had only one machine in the system. Models with spare machines in the system are next studied. For these models a penalty cost is added when the system fails (only when all machines are inoperative). (Author).

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