Contributions

  • Morrison, John A. - Contributor
  • Silveira, Rogerio G. - Contributor
  • Naval Postgraduate School (U.S.). Dept. of Operations Research - Contributor

Publication

1991 - Naval Postgraduate School, Monterey, Calif, California

Language

English

Word Count

6,250 words, Guess

Page Count

25 pages

Identifiers

Alternate Titles

  • NPS-OR-91-11.

Description

The classical repairman problem, cf. Feller (1967) is generalized to consider r failure-prone machine types, each type having its own individual failure rate and also repair rate. Each failed machine joins its type queue, and is repaired by a single server. Several dynamic service priority schemes are considered that approximate first-come, first-served, longest-line first, and least-available first. A heavy-traffic asymptotic analysis determines approximations to the time dependent mean and covariance of individual type queue lengths, and shows that the marginal joint distribution of queue lengths is approximately Ornstein-Uhlenbeck. Numerical illustrations of approximation accuracy are provided, as are suggested applications to computer performance and manufacturing systems analysis.

Subjects

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