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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,% ]+ s2 J/ v/ G+ e& V
  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.
+ T" m2 N3 j" i7 y  Loads are processed by each operator for the following time:
6 ~4 g3 O) Y% z1 q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% V( V( R" D: V# z, P. L7 y+ P% _
  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.4 w  |1 b: w. f/ y- O3 L+ P
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' I4 u1 U  Q! L1 s0 _5 n
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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8 Y; F2 p+ I7 T. Z问题:! X& b/ e+ ]' C4 [3 Z  S
After running the model for 10,000 days, what was the average number of loads in each process?+ \4 w& C$ j$ u0 D4 n7 B2 B
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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 arriving. v' T5 A4 K) Z9 V# q' H
move into Q_wait /*Capacity is infinte*/9 s4 f, m, u$ J) h/ E. {
move into Q_process /*Single capacity*/& g9 h- Q$ R! I  @" i

* B" C, u1 q' A; F/ q* Muse R_A for n 60,10 min /*Resource A*/
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; Q% y) k8 V+ W! dsend to P_B1 N! N8 P" ]! s! B5 M
end( n! M# B6 f4 S! u# a

4 A& J* O4 ]5 h/ v' `. [) ~" BP_B and P_C is similar# |) I  d8 B4 q/ x
triangular 30,60,90 min
; Z/ C# w: h' w) _. Ru 60,30 min
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4 r- w0 `& x9 o2 Min P_C, you need to send to die.
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+ @' _1 ]5 K8 N: g7 _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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6 ^6 w  u4 [. aRemember 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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