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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,4 _/ N0 i0 ]+ e0 u
  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.
2 {7 ^* ~+ n8 o# k  Loads are processed by each operator for the following time:& e4 E" n' X7 h  C* b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' u8 `# _  j9 q  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." T! f; o8 Y9 \4 ~" [7 g
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: }, p; e/ e8 k; ?6 eSend 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." F. d9 b* y1 e/ h  N& v

( ~( e8 o- C9 v# O9 U9 c问题:
& N1 n5 e: F9 V! u) {3 KAfter running the model for 10,000 days, what was the average number of loads in each process?
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7 S' T! j" p  i7 ]- X  x: I7 N不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% C( f$ f; @" w! L- Umove into Q_wait /*Capacity is infinte*/  d$ {+ s' r- B
move into Q_process /*Single capacity*/! g6 g% [- d/ Q3 J
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use R_A for n 60,10 min /*Resource A*/; A! O$ q. r( d! \, u/ k7 u' I+ \) k

9 }& {4 T/ R% b- ksend to P_B; s0 r5 k+ Y9 E9 t3 h9 U  A
end
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P_B and P_C is similar# q5 ^4 ~3 Q" ~4 `' D
triangular 30,60,90 min
* Z" s7 h6 ], `  f& Qu 60,30 min
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in P_C, you need to send to die.$ E3 M& U9 }# l% @' F/ R3 L

" E% u2 w, P' oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., Z: J4 {) J. N8 R5 A$ V* J

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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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