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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,1 J, c  B  d4 _! s+ ~0 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.
  Y5 \9 D$ ?. v! a  Loads are processed by each operator for the following time:
  Z( B  _2 O' R/ o  N& ^* k  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." q! {5 x6 A0 j' T
  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.
9 _( c, j( c; r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 C$ M$ k* Q3 E' CSend 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.9 _, Z* O# t7 q- {& D7 \

" p% o/ @% |2 h3 u+ n问题:
& R# H3 \9 C6 uAfter running the model for 10,000 days, what was the average number of loads in each process?
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  p7 w# K" A" f+ e2 ?* |# M不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. k9 e7 j2 Y- ^2 q; z* W
move into Q_wait /*Capacity is infinte*/- ^; O9 x* t8 P
move into Q_process /*Single capacity*/. ?) Z' L8 z; {/ h* i
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use R_A for n 60,10 min /*Resource A*/
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; w4 j# J% R) U) psend to P_B
6 T# c5 x' B' ]- uend5 H0 l6 B* t0 H; Y

3 H0 s9 U" Q& s0 L' S6 QP_B and P_C is similar: L' M3 G; V5 q& v6 @0 ?8 z  R  o$ W9 |
triangular 30,60,90 min1 \0 t# L+ ~9 L" q. l& a
u 60,30 min
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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.; B' Y. h  C% T' x  Q! y4 S

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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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