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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,9 _2 j8 y! _  N7 l
  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.
. X2 r+ [5 N& ^1 ?4 R  Loads are processed by each operator for the following time:
' R) j' c9 m, m! L5 c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) Q  _) a* z. h% n) n( _
  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* F8 ]' [! m- {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ f( M# x+ g( [& fSend 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.' E/ Y/ M" t, P8 V
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问题:2 w% F, F" n+ D; J! J1 Y5 R9 J5 [
After running the model for 10,000 days, what was the average number of loads in each process?
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+ x( w5 G; H. u7 R不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
* T; S! S( m# |$ |4 M$ S- xmove into Q_wait /*Capacity is infinte*/
& ^% \0 C9 D# c: u2 K8 h( ^' w% mmove into Q_process /*Single capacity*// e8 w- h0 ?( T5 K

8 x' q0 I& Q7 r" l6 Nuse R_A for n 60,10 min /*Resource A*/4 Y# Z# o2 K- X, a

9 L. T5 s# F. T1 Y6 ^send to P_B
/ T/ R* C6 @% d3 ~! Pend
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P_B and P_C is similar
% r5 Y# }7 Q7 j2 Xtriangular 30,60,90 min
9 L: ]5 L5 \- Bu 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.) R& L. i) l, a! |4 k

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3 b( \" J; \. I8 I5 k( y- f" J9 cRemember 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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