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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,- s" \: d" G" B( z6 B/ b8 [
  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.
3 ]' V, {- U/ o# A4 V! k  Loads are processed by each operator for the following time:6 g5 z' x8 b2 ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& k. z# c! c$ \- y& K6 H& G% t  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.: D4 \  |" B: H3 n/ U' G; ?
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( H6 _1 B# p* [# [  ?
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.- E, W$ Z# q4 K0 n
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问题:4 T3 x" h( W. ]) p
After running the model for 10,000 days, what was the average number of loads in each process?% t. ]: T$ U+ J1 T
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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
9 h; |" `/ X' C# Amove into Q_wait /*Capacity is infinte*/
" B  }* b: P$ ?% {! h7 g+ Rmove into Q_process /*Single capacity*/
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% ~4 o9 n# ^% d+ q* E+ Kuse R_A for n 60,10 min /*Resource A*/! t. a2 ^7 A5 p2 M$ t0 D; p* _5 x. }

6 s1 y! u7 _  b: v9 V8 usend to P_B% c, M' o. u8 A/ e. R' j3 p
end* L  i, l& d9 ]2 s: N

$ X2 f+ f; a  ?$ kP_B and P_C is similar
5 `8 a# f+ [% A$ ]0 qtriangular 30,60,90 min0 g% \1 }) i7 A( w! T
u 60,30 min
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in P_C, you need to send to die.0 q, n3 w, J, Z8 k3 i! \2 v" N
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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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0 j0 r6 r1 t/ A; c7 H2 h+ ^4 X4 ARemember 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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