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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,6 N  |+ P% o  F& A3 Q9 d: p: a$ ^
  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.
  O( f7 y# M) A$ I# N+ @" w3 ^  Loads are processed by each operator for the following time:
. z  i. H6 \& E  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ T9 h0 ~5 U, I( ?: _  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.$ S0 e- g! L. H( G; G# X7 r5 J
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 |. q6 f" e9 ~. N" g+ \" H
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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* C; U+ a4 ?) ]+ j) e问题:  n5 C+ o* `- b6 }' q- y9 x6 F0 g
After running the model for 10,000 days, what was the average number of loads in each process?, I5 i* F& j9 G" }1 N* I! W

0 ]. M8 `$ r* W不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( m' w* t# |$ o3 l4 Fmove into Q_wait /*Capacity is infinte*/8 ]0 @+ x/ t( @# o) z+ N
move into Q_process /*Single capacity*/
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6 ?0 I" d, Z; o" k3 suse R_A for n 60,10 min /*Resource A*/
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send to P_B- Z5 t7 C! ^  ]+ V
end
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P_B and P_C is similar
! ]& Z4 ]; g4 X( q1 }' ]triangular 30,60,90 min
  I1 w; c% t" O+ Q- @% G* \u 60,30 min
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in P_C, you need to send to die.& e# Z5 Q+ ^! I) ^

% m* ?* b  l/ e! @& }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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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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