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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,
+ d& h9 F4 @4 S) n; W* |  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.! w0 h+ i( V' q- Y  w
  Loads are processed by each operator for the following time:
$ i6 n% y; ^3 R) a" D  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 n6 N2 d/ L8 V) M; W
  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.4 n. J2 n( w6 T$ U# t7 V9 T$ |+ i
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% W0 `1 ^1 Y+ X& [2 N! @6 x+ ?
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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. N& n, \7 u+ M  D# O问题:0 l' o) N4 l5 c  i  x! n; p
After running the model for 10,000 days, what was the average number of loads in each process?( t! v6 t7 c9 m2 I8 ~
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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
$ r/ M9 M. \) \5 z  u1 i4 `4 Cmove into Q_wait /*Capacity is infinte*/
# {$ ]5 M8 N8 |) h! L4 `8 umove into Q_process /*Single capacity*/& y* k, e/ t5 l
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use R_A for n 60,10 min /*Resource A*/. {" u1 ]& Z4 ]1 N8 d

$ E7 W+ p" Q* Zsend to P_B3 l1 l3 x8 f. g0 @
end. j% E+ j8 u6 B4 e

; Q3 \9 `5 Q6 H' ]+ u; bP_B and P_C is similar
- N7 S" S4 b* z" E! h5 Q( B$ ]triangular 30,60,90 min
- g# ]( o8 ^. P( u" Eu 60,30 min
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in P_C, you need to send to die.& h$ C( g0 R" ]

6 u5 X4 d) O1 G$ [. n; zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ M3 p' D9 a& I+ g2 T+ p& x
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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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