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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,8 }4 s5 K* ~% E5 ~( \
  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.3 B% h" t: R8 {
  Loads are processed by each operator for the following time:
* F. F1 N, M3 E; Y2 r  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 ^- d! U1 U( k7 A& h
  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.
% W" o3 S8 z! l& J6 I, M  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( j: X1 i6 o& m. p* m5 }: h! ~! F
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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问题:5 r/ }6 o" ]+ u4 O
After 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 arriving6 H& J4 L- k7 }
move into Q_wait /*Capacity is infinte*/; p! O- U  \: Y3 z+ O8 s2 z
move into Q_process /*Single capacity*/
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) M& ^" c0 f% j, R# ^( `9 [use R_A for n 60,10 min /*Resource A*/' E  e+ v, `' c- c6 U: }
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send to P_B% B: |3 D: e# x: I+ m3 S
end6 E- V; T+ ^8 {9 L) }
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P_B and P_C is similar
8 ]0 \" n- C! d: u: W  Rtriangular 30,60,90 min0 I3 B7 s! M, _. L' O* j
u 60,30 min
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! N1 s( _2 E; X: ]) [in P_C, you need to send to die.( S3 d8 D3 L) A

  I! n3 `/ P& A. ~4 L( uThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* S/ Z. a9 b6 I6 y
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9 P) O5 Q0 \) `. V. P/ J+ xRemember 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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