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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,; C) h4 b+ p0 \! t
  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.
! C# y* G0 c! R# Q& D+ R  Loads are processed by each operator for the following time:/ \( P# z# Q) {4 [3 f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 n. O' S0 {, R( |
  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.
$ v; k6 C6 Y& Z3 h/ I  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 A) l$ ~5 B. S9 U2 d! G( 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.
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问题:
( ^# |3 L  }# eAfter running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving% C$ M  T7 _  n0 S; i
move into Q_wait /*Capacity is infinte*/
7 ?2 l" G' m1 d8 \, Mmove into Q_process /*Single capacity*/) Y8 {1 W- k& ]6 J+ g* [3 f

" c2 C& R) p: l. V  _) J/ xuse R_A for n 60,10 min /*Resource A*/0 \/ R( x- s  B
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send to P_B/ ?. S; [/ a& ?% U( ?
end6 y& E* y  ]0 Z6 R

/ A4 |0 t3 M* T6 V% B& ?' EP_B and P_C is similar
9 @' P5 J$ A& W- L3 I" l7 j, O( Qtriangular 30,60,90 min
+ T: j% l1 A, W. Y1 F2 xu 60,30 min
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in P_C, you need to send to die.( \* ?) j6 Z8 r, V
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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., v" m3 V# P9 u* X1 C9 \1 S8 Q( c
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& M+ G, t/ s* M$ E6 }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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