Replacement first and last for a parallel system with constant and random units
This paper observes optimal replacement times for a parallel system with n units, when it is operating for successive jobs with a random working cycle. The classical approach of "whichever occurs first" and the newly proposed approach of "whichever occurs last" are respectively e...
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| Published in: | IET Conference Proceedings |
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| Main Authors: | , , , |
| Format: | Conference Proceeding |
| Language: | English |
| Published: |
Stevenage
The Institution of Engineering & Technology
21.08.2015
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| Subjects: | |
| ISBN: | 1785610856, 9781785610851 |
| Online Access: | Get full text |
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| Summary: | This paper observes optimal replacement times for a parallel system with n units, when it is operating for successive jobs with a random working cycle. The classical approach of "whichever occurs first" and the newly proposed approach of "whichever occurs last" are respectively employed for replacements scheduled at time T and at working cycle Y , whose policies are called replacement first and replacement last. Two cases when the number of units for this parallel system is a given constant value and a random variable with estimated distribution are considered into modelings. We obtain their expected replacement cost rates and optimal solutions analytically. Further, comparisons of replacement first and replacement last are described in detail to determine which policy could save more replacement cost rate. |
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| Bibliography: | ObjectType-Conference Proceeding-1 SourceType-Conference Papers & Proceedings-1 content type line 21 |
| ISBN: | 1785610856 9781785610851 |
| DOI: | 10.1049/cp.2015.0603 |