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Optimal maintenance policy of a machine subject to failure

Alam, M and Sarma, VVS (2007) Optimal maintenance policy of a machine subject to failure. In: 1973 IEEE Conference on Decision and Control including the 12th Symposium on Adaptive Processes, Dec. 1973.

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Abstract

Optimal maintenance policies for a machine with degradation in performance with age and subject to failure are derived using optimal control theory. The optimal policies are shown to be, normally, of bang-coast nature, except in the case when probability of machine failure is a function of maintenance. It is also shown, in the deterministic case that a higher depreciation rate tends to reverse this policy to coast-bang. When the probability of failure is a function of maintenance, considerable computational effort is needed to obtain an optimal policy and the resulting policy is not easily implementable. For this case also, an optimal policy in the class of bang-coast policies is derived, using a semi-Markov decision model. A simple procedure for modifying the probability of machine failure with maintenance is employed. The results obtained extend and unify the recent results for this problem along both theoretical and practical lines. Numerical examples are presented to illustrate the results obtained.

Item Type: Conference Paper
Additional Information: Copyright 1973 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Others
Date Deposited: 27 Dec 2011 08:19
Last Modified: 27 Dec 2011 08:19
URI: http://eprints.iisc.ernet.in/id/eprint/42903

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