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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,
$ @5 P! _# ~$ m7 L' ~8 O  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.1 K* N4 c7 A. b1 F6 h) w- n
  Loads are processed by each operator for the following time:
9 f/ A' N& ]9 Q# Z& i" _# W- S  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 S0 Y6 p7 _1 U
  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 @( M, Z! r7 ^1 Z7 [( t  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 x  E6 c! F. V# lSend 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:
( i7 z. z& h0 b- T, cAfter running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving9 j0 T/ S$ h" K6 g8 e8 D
move into Q_wait /*Capacity is infinte*/
9 D6 z9 \3 t7 \) rmove into Q_process /*Single capacity*/$ i# F% N0 X- F# j5 |7 r' i1 x
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use R_A for n 60,10 min /*Resource A*/8 l2 O0 a( w* [6 N' v7 R. Z

7 w: A+ t0 F+ A0 T% b8 O/ z, bsend to P_B1 M! k7 w+ ^+ s/ L$ r
end
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. C8 w3 @; j7 r0 FP_B and P_C is similar
" H* @* S" a5 e( d- S. Etriangular 30,60,90 min
  c: z" Q: Y7 [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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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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