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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,, q9 Z  d0 m6 J# z* d* p1 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.
, Z2 Y* `# J' L  G  Loads are processed by each operator for the following time:5 y* K( d/ q, L  O- D3 _
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 l  n) H8 g$ z/ s: W$ |% `3 S
  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.
7 y2 ]9 n; N6 ?4 K/ {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  e: e  a0 g, f+ p7 Q
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 H" }; z" i: V' J) L0 W: m
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问题:) y0 Y; e' ?! h$ k
After running the model for 10,000 days, what was the average number of loads in each process?0 B2 q8 ]" E5 }

! T! Y  c2 P9 @& J8 u# d不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  f4 X6 G# a* J% d0 f+ Smove into Q_wait /*Capacity is infinte*/
* q7 _+ t. }: ?- G4 C7 tmove into Q_process /*Single capacity*/3 x/ y% l& _0 @- U* @; U1 Y
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use R_A for n 60,10 min /*Resource A*/
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send to P_B. G# m& G  J9 c4 A* S# s  i* z4 F
end
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! C8 _* }) c8 j/ k* N1 c) [P_B and P_C is similar
8 i* g# O; ~8 V8 g7 v4 F, l; ttriangular 30,60,90 min
  }( {1 X8 S- m* Yu 60,30 min
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& A1 ~, I; v, M$ nin P_C, you need to send to die.
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' g/ I/ v! L* x" I2 R/ YThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.! G" {7 g# W1 L, i: Q1 L

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" z. {) d' A, Y2 P/ i) 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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