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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,8 h3 s$ s- V. 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.
* @' G* q- j7 ?6 A8 P  Loads are processed by each operator for the following time:( F- t  g# w; \% z+ B+ ~! Q+ {
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 A) Y7 Z3 `0 H! r# ]; f  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.7 Z+ |! W& _* @% F& t6 L8 S% d( n
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- Q" u* P3 o1 O, V# }  W3 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.8 o8 ?3 J2 U8 I% R
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问题:
3 C4 A6 g4 R( n2 KAfter running the model for 10,000 days, what was the average number of loads in each process?
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  @! ~8 a  j( m( N' I不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& p4 S+ G2 p. H: Imove into Q_wait /*Capacity is infinte*/# E0 B( y& j" D, l+ L. r3 _8 O8 U
move into Q_process /*Single capacity*/
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! X# ~2 ?8 q! o. j& D7 E; |use R_A for n 60,10 min /*Resource A*/
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send to P_B7 h$ C9 Z+ \0 S7 _& O4 x; S8 g
end
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P_B and P_C is similar
  P0 ~2 |# x: [triangular 30,60,90 min
$ i+ [& W- g; {8 l6 U+ r# \. eu 60,30 min
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7 D8 Q, w( I* k* k% win P_C, you need to send to die.( Z; Y: B8 [7 o) f( E$ [

1 M3 J7 @/ \" CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( t8 |% g9 s+ [  N4 ]

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( W' M( q  o; ?8 y, {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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