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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,
4 X/ u2 b6 `/ T' D, a, o" Z3 B3 b  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.; [6 x' \" O  T0 s0 A
  Loads are processed by each operator for the following time:# |4 b% V" |0 X- s) R
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  \& o2 b4 d5 H5 O2 P4 I3 p  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.
& w2 X- |; J/ ^  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ b& s) [6 O1 {5 Y# Y, C; ySend 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.
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问题:" O4 R* h& r' C; ?+ n4 M. S) D
After running the model for 10,000 days, what was the average number of loads in each process?  W6 E5 f1 \4 @& g

  C( t! l! \9 t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ V5 r) @* l- |
move into Q_wait /*Capacity is infinte*/) V5 F* F, N, X0 I' n. o8 |0 x
move into Q_process /*Single capacity*/5 w- r- j# ~3 ?% H1 }$ |& U/ \

. ^, O; l# D- h$ X% o; huse R_A for n 60,10 min /*Resource A*/  s; P3 t/ g3 l; \0 R' u1 z3 H
2 ^( I% ~4 [. C, \; b3 T) [
send to P_B6 J4 G5 d$ |/ T% p
end3 n/ l9 c: m$ m2 v2 R# U/ Y

; j2 \* q2 D9 M1 w' Y& o$ yP_B and P_C is similar
) U- o# C' ~: l$ [4 \2 Y6 Jtriangular 30,60,90 min. d4 f9 V5 A$ O" W
u 60,30 min0 Z2 B* u) J8 z, ?. e
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/ @, d3 W) R1 U8 m# |; |in P_C, you need to send to die.6 \) y6 D' E1 n
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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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