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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 e+ E. b$ K4 x; E$ Q! u+ V- }
  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.1 j3 _+ K% v$ X+ _( P" @
  Loads are processed by each operator for the following time:
& V! ~: Q; o# {  j' o; ]  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: l- j5 G0 D  w8 g- r7 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.
7 _' q/ O  z2 @+ r$ w  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 Z+ ~5 \" Y' W/ `" A+ zSend 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.( s) h8 G1 T3 f9 s  y/ l9 r
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问题:
2 r& e# `# r" KAfter running the model for 10,000 days, what was the average number of loads in each process?+ k8 q( P8 i: r8 @6 ?  l

% h; L* C' w' u7 U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' w0 |7 Z* R% |* `move into Q_wait /*Capacity is infinte*/
" l) [1 ~% d6 l$ O& \7 l6 emove into Q_process /*Single capacity*/  [' m* z$ p6 U$ [: \. @1 _
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use R_A for n 60,10 min /*Resource A*/
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send to P_B" _6 Y& I9 r2 H
end
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P_B and P_C is similar! t# X1 C0 ?+ a5 p
triangular 30,60,90 min
) D' C5 b9 p. D2 C  S( zu 60,30 min
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in P_C, you need to send to die.
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. r4 S9 S7 W, P: m' DThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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