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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,2 |# f4 G" S- l8 S! B* U. D
  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.
7 O! q7 B; f  h, ^+ B1 A  Loads are processed by each operator for the following time:
3 I' m0 d# ?3 b  r) D' j# w' Y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& s- U4 k* W/ L' @" {  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.# {9 }& Q0 M! p
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* ]  `5 E$ X) {9 z
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.. K9 s" b: N- q  ?2 o) G' o* ?5 g; j
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问题:
" x# R# [8 A& BAfter running the model for 10,000 days, what was the average number of loads in each process?
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! y3 U6 \8 W& f- u不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
- r7 S1 I3 c% \, F4 n' k% ]. dmove into Q_wait /*Capacity is infinte*/
: Q+ y! \2 b$ E2 \move into Q_process /*Single capacity*/2 D! h, C. z. Z! [# P
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use R_A for n 60,10 min /*Resource A*/, }$ S8 w/ ^; a. E

3 m0 O) E( L# t, Osend to P_B
+ A, q  s; d5 G7 X4 n# ^end
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5 o* e$ G! Q9 X. C( ~' @* x1 k# uP_B and P_C is similar
& U0 `+ d8 R' Z1 _* q+ p/ ltriangular 30,60,90 min' |1 G. ~# ?. z4 n: H
u 60,30 min
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in P_C, you need to send to die.' R% W' M8 f$ K3 u
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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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+ V$ S: }8 L$ yRemember 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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