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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,- ^, t9 `' L, L: R: W, O! c
  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.) l1 s0 D. N" a7 @1 ~8 e# N) I
  Loads are processed by each operator for the following time:
5 r) U6 W' M0 \  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. I5 M, [/ A, ?. W& y7 o
  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.# i6 |2 r! j: B  r7 |0 c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 a. u& e, C8 s# ]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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/ P# x% w; I8 ]问题:& C% s6 y* ?  s) K$ J
After running the model for 10,000 days, what was the average number of loads in each process?4 s0 x, V, Y/ j% R  O: I( }' C
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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
. s6 T1 T) p  W$ s/ @2 L+ n7 E( Tmove into Q_wait /*Capacity is infinte*/
+ a3 `, o' Y! c% gmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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- j& ~1 a* H9 {( z& F! zsend to P_B
) S" k7 d3 g' v' oend
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P_B and P_C is similar
' s) {$ E. g+ ttriangular 30,60,90 min3 j. v  E, j. D% i: Z/ A  p
u 60,30 min
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- t9 ^, a5 z# j8 ]- Z1 m6 L' d0 kin 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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