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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,
6 [. g! E1 j4 |7 E+ b1 q5 \( U& O  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.; W5 O3 T" s/ ]' Z" H0 d' r+ {
  Loads are processed by each operator for the following time:
# C# |- H2 ?1 B* H  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* F4 l$ I. R$ a7 g5 k' Z
  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.
. B; T# }3 v/ s3 P8 Z/ y8 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! m/ S* q% J, o0 ~5 N- U- g
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:
9 L3 C" N$ p1 `% CAfter running the model for 10,000 days, what was the average number of loads in each process?. |& u% Q/ z! [6 C8 o) j; 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
+ i2 c# Y8 i2 c- N: lmove into Q_wait /*Capacity is infinte*/
4 ~+ w6 J) W4 {/ G- D3 W/ omove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/: ~/ t- T( S' @0 V& F* O+ ~6 w

$ E( V+ v0 I, Y8 g$ psend to P_B- f% _1 S/ B* E2 h
end
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& S2 o7 d4 d. w) ?- }% [P_B and P_C is similar
) W! O& L0 W6 Ytriangular 30,60,90 min
6 S' k  {2 O  a) l( C5 @; Uu 60,30 min
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in P_C, you need to send to die.
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, w# U6 `. {* q: a3 AThen 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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