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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,
" y7 M. U/ a' z9 _+ @  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.
9 l4 t) q; N  H) V# }  Loads are processed by each operator for the following time:% X' ]; F; ~+ A, S/ ]
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: E) x4 w# G: X* F4 _) 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.; V) ^: _: {! q8 T: u$ ?) D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; A- `  a$ F' w' u% I( I+ VSend 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:
7 V9 b6 n2 J) W2 c& FAfter running the model for 10,000 days, what was the average number of loads in each process?) d3 M# P( o8 a
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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 arriving8 u; C5 S% P0 Y
move into Q_wait /*Capacity is infinte*// M8 |: i* m. s8 Q$ h& A0 [
move into Q_process /*Single capacity*/' }- B7 N5 l, j6 X3 z; d% I$ L

: ]" h% w0 ?5 W( O" }use R_A for n 60,10 min /*Resource A*/
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send to P_B: W" z7 T5 A$ }5 l6 |7 W
end
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P_B and P_C is similar
( ?1 b8 |" ?  X! Vtriangular 30,60,90 min
$ S0 q3 o) x, j+ Cu 60,30 min
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in P_C, you need to send to die.
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5 {- v# F1 `- E( F" l4 Y; WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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. Z! B1 Y: o4 Z  @, uRemember 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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