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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,
  j  {7 M* |4 L, ~' N2 y3 J8 d  L  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.
  S- p' m# W& u  Loads are processed by each operator for the following time:. e4 U) j8 E9 \
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, C/ Q% C6 K' 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.% N5 F- L" X& z+ D& a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 L% [, v) c' W# p; \
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:
. N* q% R! [1 V: H6 S( oAfter running the model for 10,000 days, what was the average number of loads in each process?: \% n! f1 W  X' {
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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
5 m8 K% G% q9 B9 v9 {6 }2 n" Jmove into Q_wait /*Capacity is infinte*/, z9 U1 b- H# V8 b: x8 R
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/, D$ R2 s# S  f9 ~; \( p
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send to P_B2 n7 j  I; o4 Z- w4 l7 |) i3 ?8 {
end0 |6 F* P7 y0 S* q
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P_B and P_C is similar
+ P4 B6 A  Q+ L$ R; e1 L% Etriangular 30,60,90 min
2 b" U6 s2 k: S  m- J, P* cu 60,30 min' K$ [% c1 J9 [
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in P_C, you need to send to die.
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Then 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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