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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,
) W% x+ X, g* W& q$ X  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.: _# s" ?4 S. P$ L
  Loads are processed by each operator for the following time:4 ]+ }2 b+ d/ T; _) B7 g. a& ^( r1 H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 J3 L5 n4 F* j8 N8 d  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 Y6 Q* E! w4 M4 M5 ?, v
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& w8 _' _3 v7 E. `$ qSend 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:. B8 H! B, j# |4 g
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
: h- @: b3 N  x; j% O+ R- q$ R+ Lmove into Q_wait /*Capacity is infinte*/
9 W. e  ]) ~! _  Z/ a6 @& [# pmove into Q_process /*Single capacity*/* d3 [" N+ I! S( b% U/ ]
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use R_A for n 60,10 min /*Resource A*/# f9 y7 L; y4 ^  h: w5 a; Z# ~
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send to P_B
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8 N' b% G. A8 r( i& KP_B and P_C is similar
0 ~& t, g: p2 @: K9 {. Z& v5 ?triangular 30,60,90 min
3 T, c+ o; X: j& Z+ _0 u# Pu 60,30 min. f  \% }. b4 h& t

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5 k0 _- u! s7 hin P_C, you need to send to die.9 P- o. n: i/ I5 \0 [9 t/ x9 o5 ~0 d% s

5 J9 d$ F5 N# ?) W, W9 E1 W4 QThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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7 ^; p7 r( I; 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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