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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,$ T7 l" a! X) }  t
  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." R+ X0 @7 C" C9 F2 x
  Loads are processed by each operator for the following time:7 A% a& Y$ k& p- X' R
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 y, ?3 b$ M7 H+ h  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.
2 Q+ W0 E/ V) _1 p  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 |: Q8 w( _1 h& t
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.
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! x; e! P' j3 V/ h  R问题:# z7 f/ P( s2 M9 `
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
5 Q5 J/ [0 C3 n6 S  [( B( Nmove into Q_wait /*Capacity is infinte*/% A+ D" w7 ?3 \, ^$ [
move into Q_process /*Single capacity*/
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( Q! A9 u7 `3 Z# Z+ P+ g5 G8 z( [use R_A for n 60,10 min /*Resource A*/
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send to P_B' y' c4 k& M7 K/ [8 V8 o5 m0 {
end
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P_B and P_C is similar
+ P/ d0 T  I: i/ c# }+ h. qtriangular 30,60,90 min
+ y4 M! I. K1 uu 60,30 min3 q  D; F% B& S6 j, H
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in P_C, you need to send to die.
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2 f( f  F, H; l0 b6 T: O% sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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) m. V9 [5 \; RRemember 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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