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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,0 z+ \: o5 W% Z8 p4 _% k  s7 z3 r
  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.
* v" D- y! k  \( H& p# S& [  Loads are processed by each operator for the following time:) h9 W; b  ~' G
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 b: r3 L8 v9 e- c) b1 v, z& _  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.- A5 y$ v/ w. T/ n% C
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 ^) e" g5 _8 u9 {6 Z" Q
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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9 X; ?& a2 t+ N2 Z问题:
9 o; `9 f. H, \After running the model for 10,000 days, what was the average number of loads in each process?
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5 L' ]. ]4 q$ T: ^+ L不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 ?1 L, h) v& c3 l+ @8 Mmove into Q_wait /*Capacity is infinte*/
, L* Y0 ?* y* bmove into Q_process /*Single capacity*/& W" f0 O4 n# q1 @3 S
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use R_A for n 60,10 min /*Resource A*/
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send to P_B) i2 O' j+ P& G4 R6 l6 ]% ^" I  f
end
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P_B and P_C is similar, I  r# D1 W+ C1 m
triangular 30,60,90 min
0 u# d; C; |5 {+ S$ eu 60,30 min
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" u% d$ w, B+ a$ ?$ f3 E, h2 yin P_C, you need to send to die.2 z4 _3 O& E: w2 J

1 N& @) N* Y: Z9 B2 f1 lThen 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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