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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,
; y  P. R. }- I6 i4 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.$ u5 v/ [* {% s! ?
  Loads are processed by each operator for the following time:/ j" f+ K& Z! X5 V$ N5 c3 w
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# D* l- [+ v  c' M  L) W. c& M  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.6 [* c# j& R1 ]$ x
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ B' z0 ^& M! 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.
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问题:
$ h+ ]. P: R" U) D7 bAfter running the model for 10,000 days, what was the average number of loads in each process?! n. W* [1 F3 e3 h, U% I) U

6 t$ n: _! H" M: K2 g* h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving4 E% H* ~' p/ U
move into Q_wait /*Capacity is infinte*/
5 Y& ?0 f: Q4 c, qmove into Q_process /*Single capacity*/
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- S5 x% P. G5 r" Ruse R_A for n 60,10 min /*Resource A*/% @6 Z+ ~$ {2 [# }! k
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send to P_B
$ j. s8 y4 A* X: wend( ^, P- I. l! s) z. n. v
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P_B and P_C is similar
' L0 k; i& ^3 F8 atriangular 30,60,90 min
% e* }: z* \, V, uu 60,30 min4 F, A5 ?6 e. m% [0 ~
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$ U  Q+ N# `2 _& E% A. yin P_C, you need to send to die.! S* `) v' d8 I7 A& Q6 F; B2 u! O
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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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4 i& U( l# `% R" A/ y' lRemember 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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