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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,- R2 m! d3 R( Q: k+ _/ b% E3 j" _7 J
  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." `  y4 c# a7 Z0 I
  Loads are processed by each operator for the following time:1 c% g# K' v9 I$ e) L) Z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- L9 g  Y) O- D! r( {  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.
- G$ M" E! n5 p/ u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  s6 W6 W0 x3 j/ R. Z  f+ D! \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.; D4 L" ~$ J7 Q+ D7 l
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问题:
3 I! E. w! n# _$ SAfter running the model for 10,000 days, what was the average number of loads in each process?
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% a+ t& g5 Y4 Z2 H: m4 h. Q% t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! i* B! z/ c* r5 R, x. g: Smove into Q_wait /*Capacity is infinte*/
6 U$ T! o, [# |! Kmove into Q_process /*Single capacity*/
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* P8 u% G2 G' S- Yuse R_A for n 60,10 min /*Resource A*/
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send to P_B0 F* S. Y) R6 N+ T) H
end8 Q- @$ Q) O7 F. Y( b! k

1 u) R0 z% H0 x) s/ B4 Z0 M1 sP_B and P_C is similar
, D/ P4 c5 d+ H6 L# z: G( Utriangular 30,60,90 min& r+ e$ G" S0 g) d
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.
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" S. H/ I0 G: a( m* ~- A2 K- aRemember 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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