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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,: q+ Z6 a! ~4 d- _
  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.- G9 U+ D) v* f! c- \
  Loads are processed by each operator for the following time:
$ V$ }) E4 C7 @3 p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. T- p/ U$ `7 V4 M; T" _
  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
; K% S/ i' n- o2 P+ |  i7 l! `/ o  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* g5 O( s& G2 ^( K" ^5 LSend loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.4 n- R/ Q$ Z7 }# P: }7 z
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问题:; Z9 J9 T1 \4 W, O4 o
After running the model for 10,000 days, what was the average number of loads in each process?* h7 l* J$ z: ?1 b/ c- k' \

* R2 X- s/ K% V) E0 j不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  Y9 ]# ]' Z5 S$ ]3 w0 x+ L% @  d
move into Q_wait /*Capacity is infinte*/+ K/ X* X- T# ~5 Y' F$ p
move into Q_process /*Single capacity*/1 B# ]" P; x! b; o" D
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use R_A for n 60,10 min /*Resource A*/
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send to P_B3 I3 Q9 h7 T( q, X' K8 c
end9 }. W- \5 t, s6 x7 @
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P_B and P_C is similar
9 `* h/ Z" `: N, K0 X; Z6 |$ Dtriangular 30,60,90 min
# s6 N" G$ k3 j) I/ S7 ?4 qu 60,30 min2 y( r( R% g( w: H
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+ z% F: a) e" O, ^5 E; D; Din P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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Remember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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