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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,$ m; o' K7 C# g) P" Q3 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.: I! V; c8 {* t8 _4 P/ h/ I! E* s- V- `
  Loads are processed by each operator for the following time:5 v' T: v1 K/ a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.  B3 O3 K6 O/ x: W( i
  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.
9 L$ u. u: N; [1 H' d$ Z0 z* Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# z$ t) ]/ U5 I
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.& U2 w  _1 Q9 f# o7 a* o" d
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问题:) K7 Y2 P7 @' P2 a
After running the model for 10,000 days, what was the average number of loads in each process?8 `( C7 F. v8 t4 J
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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
0 |8 K; w7 q9 A) T: b) E" ?move into Q_wait /*Capacity is infinte*/
& G( ]( ]" J: Z" l! u* t3 pmove into Q_process /*Single capacity*/
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, T( v5 H* K/ b/ ?8 p, fuse R_A for n 60,10 min /*Resource A*/
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, W% e0 t& D- W' [send to P_B, D! |2 z3 @7 [" x3 {. e" N+ ?* W
end& X" x$ p7 F- ^& \5 |
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P_B and P_C is similar
+ W( U/ k2 M9 ~4 u* Atriangular 30,60,90 min$ e8 \0 F1 C) Q3 {) @
u 60,30 min
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in P_C, you need to send to die.9 d7 V/ Z! o7 ~

. y8 x* D( v# P1 h1 WThen 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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