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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! G) L" r$ m2 t
  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.
: T8 p% V! X; m& R  Loads are processed by each operator for the following time:
. f4 P& N( q/ T3 ~/ c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; x+ p" t' g8 ]$ }) 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.( ^3 P7 H5 @. j, x; z2 O" |3 t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 x5 W( ~5 s" ^+ r
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:
" }0 W$ q- }+ ]+ LAfter running the model for 10,000 days, what was the average number of loads in each process?) R1 F+ Y0 u( P1 H0 V% H' U
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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 arriving2 B$ a9 O8 @' V# M5 l/ q* x
move into Q_wait /*Capacity is infinte*/5 M: ^) O2 O$ y# Q  W
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  X: h  A$ r) [2 H9 _5 J9 b0 usend to P_B& L' i( J0 y; M  ?; K9 E
end
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6 g. B* H. ?5 M) r% }P_B and P_C is similar
, b! U7 x0 n) N: N0 s) Utriangular 30,60,90 min
0 ~. Y" p( e' Ju 60,30 min
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! z4 R& \1 {4 U3 X0 Pin 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.( m2 s9 J5 u5 G4 |3 ^1 b6 W

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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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