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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,
  a' @" I' d* T8 \' R( x  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.
* y) R/ m% U% N! Y  W  Loads are processed by each operator for the following time:& i- @& o3 O5 ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) o( S- k. v4 h5 \8 h" y. G7 u
  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.
2 J  R# f1 m# p6 L8 N3 A% |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.. R3 x" B, R0 p) k
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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3 m& ^1 B! }) }& S6 E  b9 D问题:7 |3 g8 R, E4 ~3 X. B! ^2 z
After running the model for 10,000 days, what was the average number of loads in each process?
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2 M; p4 ^- Q" I不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
2 R  ~9 y; m6 T" t6 {9 [move into Q_wait /*Capacity is infinte*/" u5 o, E  \! _+ R  m" @% _$ y$ |
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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3 L, L$ k: P+ i% O. rsend to P_B+ ?$ K7 ^! @* z' v/ O! }  g
end
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P_B and P_C is similar
3 a2 {8 o; H, r) r" s) Ytriangular 30,60,90 min
! W4 A$ r; `7 ]- |6 {) w+ _6 `u 60,30 min
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2 {4 y+ g2 Y' G7 a& ~- Iin P_C, you need to send to die.
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0 B# _1 Z" U( o+ w9 E) A0 \3 xThen 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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