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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,
$ h5 Q5 `" I5 P' d7 ]  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.
" ?: |) H: G+ `, w  Loads are processed by each operator for the following time:
  M7 u: c& A4 P, H7 E$ l3 @; b  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& ~4 H% Q9 c  Z. X; 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.  H! F: |/ [7 E4 q9 S
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  x2 F$ g9 b. B2 Y0 U1 F9 w; a
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.9 e1 s5 p1 [' {1 S

8 _: i$ R# t) E  h- ~" J: g1 D+ A问题:. X7 F4 ~4 ~7 A
After running the model for 10,000 days, what was the average number of loads in each process?5 _+ }) t4 A! D$ P$ T7 G
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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
- p1 p' F1 d; ?6 Y* V  ]$ _* Xmove into Q_wait /*Capacity is infinte*/
% c0 C; {  O) i/ bmove into Q_process /*Single capacity*/& e0 g7 q8 z1 d5 ?

" |: E$ ?0 m0 M1 S- _use R_A for n 60,10 min /*Resource A*/
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send to P_B- b8 i9 ?! z3 K6 n9 o, k4 y
end
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P_B and P_C is similar
, r. _- _1 D2 I) }: striangular 30,60,90 min
3 D) B5 {* e" N. ~5 Y! d0 _% |6 ou 60,30 min
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" M$ e4 f  r: S' Uin P_C, you need to send to die.
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5 X/ S+ x- q+ c  o( Q  C' LThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.- g" `# F6 z: f7 T+ r3 L
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  Z: [, {% M: R- H4 uRemember 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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