Multistage Manufacturing System (MMS):
LQGP Problem Example
Model Assumptions for MMS
- Loading (input of raw materials) and unloading (delivery
of finished goods) stages excluded from MMS.
- MMS consists of k stages.
- Stage j preceded by stage j-1 and followed
by stage j+1.
- For each stage, machines assumed identical and produce at the same rate.
- Surplus aggregate level for stage l,
a_l (t), is the number of pieces that have successfully
completed l stages that are
not defective and not consumed by stage l+1.
- For every stage, one or more machines may be repaired
or fail at any given time depending on the number of operational machines
at that time.
- Production level is expressed as the utilization (fraction
of time busy) for each machine on a given stage.
- Only regular or unconstrained control is considered,
this may cause the production levels to exceed 1. In this case the manager
should set the production level to 1 and adjust the surplus aggregate
level accordingly.
Web Source: http://www.math.uic.edu/~hanson/SC96/MMS_ModAssume.html
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or
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