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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,
( ~( ^+ ?  p; f8 \  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.
  j1 q0 f' {9 V& R" U( l  Loads are processed by each operator for the following time:$ N3 p2 k2 d+ V1 S' `* x6 T- E5 C
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 }) |% H! g) K0 w0 J- k1 H. e4 g  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& `1 l) {! S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; \6 g% A, [" m+ |# D$ T  Z/ c
Send 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:
4 m, O. W) G4 R$ l* c5 r, fAfter running the model for 10,000 days, what was the average number of loads in each process?
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+ i. X( ^% H! k/ j4 }1 ?7 k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving' S" o0 |9 e8 z, g3 Q
move into Q_wait /*Capacity is infinte*/
* ^/ N' J& ]3 o5 K* L5 \/ Zmove into Q_process /*Single capacity*/. Z9 `8 i4 H2 p
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use R_A for n 60,10 min /*Resource A*/3 H/ y* w. `7 ]* y+ W7 W5 u

  N! G" ?2 H. l2 W( v  O( \/ M( Esend to P_B
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7 B2 L5 J4 s1 ^" QP_B and P_C is similar
. w- I9 G$ _' {9 {triangular 30,60,90 min
* s4 l4 j- U$ Y% w/ Ou 60,30 min
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in P_C, you need to send to die.6 L) J3 G% o* z

. K5 r) l5 A. b/ j$ s' m* VThen 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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