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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,+ l1 Z2 i  G6 N' }# }- A+ `+ k9 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.' ]  b) ?' t) }8 K1 H
  Loads are processed by each operator for the following time:
6 z& G% v% D4 P& m3 s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% q) E- F, i4 o+ c4 h  v  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.
0 [4 \/ W1 \; ~2 Z0 y* `# c  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) @# \* d- q/ s$ g. c! T$ rSend 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:" }6 H( g9 _# @/ o
After running the model for 10,000 days, what was the average number of loads in each process?
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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' Z% ?  ~/ }+ ^8 d( b
move into Q_wait /*Capacity is infinte*/, T" o* }6 T! q+ Y, |! ]  Y
move into Q_process /*Single capacity*/- B3 O9 G9 o/ |8 ]5 m. |/ v& P8 B& U
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
5 v$ ?9 n3 a! g/ j, T: Wend
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P_B and P_C is similar1 V: {$ }+ S$ f: y0 ?; l% v
triangular 30,60,90 min3 ^8 H: U, E$ D/ n
u 60,30 min
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9 v" W) ]& l. xin P_C, you need to send to die.. F1 a- w3 O1 N& I: }

- R* j* ]6 @5 }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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: x: S% f, _1 R) u; y" p$ NRemember 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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