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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,  r+ E1 b' X5 E4 G3 }9 f
  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  k2 j. x9 e- U5 ~! }( \$ Y  Loads are processed by each operator for the following time:/ c2 `: O' w1 }$ @3 u& d) [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ x- M- e% \) }0 x2 \2 E: r0 j* Y
  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.
! ~- k8 L3 W$ D5 l4 U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 A7 N: P1 y/ k5 N8 u3 Z
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.7 r0 I# l" c- I0 C6 l# ^) a; e! [
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问题:. x) {( T4 n  ?+ p
After running the model for 10,000 days, what was the average number of loads in each process?1 P- ?$ @  {9 A$ U& J2 [, j( J

  h, R- }  s9 s; q) e+ ?5 H不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 a+ X; Y- ?6 d7 Z  n
move into Q_wait /*Capacity is infinte*/) `3 y, B  f2 W; h
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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' m; J/ f- C6 e& asend to P_B
' z! x9 [8 F$ t7 m2 ]9 Cend
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P_B and P_C is similar
* @) i1 i- m; o  V' dtriangular 30,60,90 min
6 w% N* C0 o2 v2 iu 60,30 min
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in P_C, you need to send to die.
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: M/ k# m2 M) x8 DThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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+ _: [* }8 `  I: w
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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