Sx. Bai et M. Elhafsi, SCHEDULING OF AN UNRELIABLE MANUFACTURING SYSTEM WITH NONRESUMABLE SETUPS, Computers & industrial engineering, 32(4), 1997, pp. 909-925
This paper considers the scheduling of a manufacturing system with non
resumable setup changes. The system considered involves an unreliable
machine that can produce two part types. The switchover from one part
type to the other incurs a given constant setup time. The setups are n
onresumable, i.e. after a machine repair completion, a setup decision
has to be made. The parts have specified constant processing time and
constant demand rate. We give a continuous dynamic programming formula
tion of the problem, which is solved numerically. The optimal setup sw
itching policies are shown to be hedging corridors. Two heuristics, fo
r the determination of the hedging levels, are provided. We show, thro
ugh simulation, that the two heuristics exhibit good performance. (C)
1997 Elsevier Science Ltd.