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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," t" a* G! o, H  q  O- z8 {
  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.6 K! E5 K4 Y' n+ f+ a/ ]6 U
  Loads are processed by each operator for the following time:$ z" \7 o$ e8 f' i5 h, g/ [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 y6 d) E, m9 v) {
  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.
5 e' b9 l- `) E% O2 Y) U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 w* e! u, q, H* G/ o' 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.
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# A/ g* |% X* j1 G+ i6 h7 x问题:( X7 t4 ~+ ~- Q- `" p/ A2 T
After running the model for 10,000 days, what was the average number of loads in each process?
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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) \+ A) w0 H' X& j, P+ O
move into Q_wait /*Capacity is infinte*/: m3 M" S% ?2 n% c, P! W1 B
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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* e' w$ _3 s5 w( \send to P_B$ A, n( W3 X5 E' b8 g, b
end
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  X) N4 d; `! d! @- N2 T1 C0 ]P_B and P_C is similar
# k. p  m7 p+ R( }/ L, a* Ltriangular 30,60,90 min1 m, V& h: G7 V' n
u 60,30 min
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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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