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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 s. c# q3 \  O' K! 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.
. S- q$ a  E8 Q$ h! b: n  z  Loads are processed by each operator for the following time:& v' [" N+ [, C9 `. c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! }  @% |, H# }9 q1 |
  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.
$ j- T1 b' g( o2 S( c  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# h# E2 V; m9 ^0 J- w7 _9 J* N( X# ^
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.* C- ]6 t' F5 o% T$ Y' j" a. ]5 [/ R
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问题:' o3 b: U: x- E8 ?) @  X
After running the model for 10,000 days, what was the average number of loads in each process?
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; R0 M# f4 a" g$ }3 V不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
7 S1 {, x+ Y0 a. F& ?move into Q_wait /*Capacity is infinte*/
. o& x. E; U( `: qmove into Q_process /*Single capacity*/
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/ {1 Y' B, j$ Zuse R_A for n 60,10 min /*Resource A*/
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send to P_B
& J' i+ W+ d0 o( Gend
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P_B and P_C is similar
; ^' q7 l$ v, w; L/ U! l6 l& htriangular 30,60,90 min# [! P. K: w: D5 a0 n
u 60,30 min
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% a; ?7 @1 D) y& Sin P_C, you need to send to die.
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" I5 {9 T* O. iThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& A+ O( ^# T' ~+ a4 e) _

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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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