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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,
# i2 i6 g5 _# A6 R+ C# C- I  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.
- w' @; [4 k9 y" P1 y  Loads are processed by each operator for the following time:
4 Q" T* E+ V/ f1 c& Z$ v7 _& w  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: {/ X2 B1 O1 P7 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.
! c8 T# `( @: V' r  y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 \6 v. t  ?  Q6 }, \# w
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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问题:' _; P6 \: Z' ?) E; s) K
After running the model for 10,000 days, what was the average number of loads in each process?
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: J2 {. h+ n- k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ R. {) `! C4 ^+ zmove into Q_wait /*Capacity is infinte*/) V8 X' h+ n- n+ @) j# p0 \- q
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/, f& @2 N* W9 l1 O

, [* ?4 O' ?* _+ p& q1 t" _send to P_B. V1 y" @/ p7 q/ A  g7 ]2 |. g
end( v* z6 y' e7 C6 e+ r4 ]

0 ]3 X3 d! L: m  A: Q' _- t0 PP_B and P_C is similar5 n$ {  P9 S! M8 v* R
triangular 30,60,90 min
2 k7 d+ r/ [% h% Wu 60,30 min) n6 _3 [( _- U; c9 a) t7 C
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in P_C, you need to send to die.
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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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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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