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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,4 C. @2 T& S( Q2 A4 L. U* g
  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.
* ~- H$ o* l" A4 W  Loads are processed by each operator for the following time:8 ^0 b4 \- w9 h3 Q4 ^
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) L6 ^+ w" D4 _  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.  N' ^1 s" |& w% i- g
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. i% n  o2 k  ?. ]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.6 }+ ?# ?. O. }( f2 \. N! t3 R! ?

8 n( j5 z: S( R问题:% H7 G* s9 ~. w* J! I
After running the model for 10,000 days, what was the average number of loads in each process?0 @  w& X( g2 [$ R9 R

, D; v# Y. L  l. w/ R9 E不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 j& C3 l2 a& t
move into Q_wait /*Capacity is infinte*/* d& \8 h4 @! O4 {- |: m  I
move into Q_process /*Single capacity*/
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. M2 R, h6 Y: c  q1 Q: U) Xuse R_A for n 60,10 min /*Resource A*/
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send to P_B
  d4 }+ k( y% eend  D+ r7 Z' m( G, ~/ W  N- x

" R" N' y1 t6 I1 n) K! v! u$ eP_B and P_C is similar
4 P2 u* D0 H2 t) m; {. qtriangular 30,60,90 min
" _1 ~% O% i6 h+ U: L% ]u 60,30 min
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in P_C, you need to send to die.
3 `" W" @" R( I3 t) h5 T' W( G" [1 w, K. S: m9 M/ ]: x$ k% s9 A
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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. z6 J; n6 f" c9 R9 j/ I+ t; yRemember 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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