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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,
( k+ K8 l( O; ?$ c- \' I  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.: [( l# D/ P" E" c& [& a7 n
  Loads are processed by each operator for the following time:
2 ?5 k: j/ c' Y/ L- O( R/ S. s: Y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 X  j. b! ^5 t2 q! }" P. c
  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.
2 G: K- k# |- j' H( h% v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' B6 X  G  z7 a2 R
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.0 j! _+ G+ ^- Q! t7 P
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问题:  z+ k; ?+ s! N
After running the model for 10,000 days, what was the average number of loads in each process?) O6 o: M7 B9 T0 Z6 w

# T1 @- F4 g2 x9 e不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) U% H. N, {# N8 Xmove into Q_wait /*Capacity is infinte*/
/ X8 ], P; K' Z* umove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/. ]1 \3 T+ X( ?7 ^

! ?' v7 F8 `# k- {3 ^" E0 O; y) Hsend to P_B$ v# J1 N$ \$ f2 F3 J8 ~
end
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- `5 [4 y0 d3 c2 t) s) O, `6 oP_B and P_C is similar
) \( \  @! {" `$ atriangular 30,60,90 min
- a$ j. k4 f6 [3 Yu 60,30 min# ~- J7 M5 a3 G' K, A. ?3 N/ J& [
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in P_C, you need to send to die.
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7 V7 G( V; h; k7 u3 w! R4 b: OThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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3 [# y- f/ }( tRemember 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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