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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,3 T8 Y) b( V5 d9 }; B
  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.* r4 y5 Z. i: H8 e0 S' `7 H
  Loads are processed by each operator for the following time:
$ a  s8 \, V$ t) A2 W8 S5 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 `. f2 S& J! X2 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 f# G0 c0 Q' d
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ b# x% u3 R/ A7 l7 M2 Z
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:
- \& M# W1 g7 c2 g6 o  u6 E. GAfter running the model for 10,000 days, what was the average number of loads in each process?: Z. A3 L" q$ V" s5 j, o

  u6 M$ K& J8 h. D, @% \3 E$ p, y* N! g不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ k# X  \  H. t- f
move into Q_wait /*Capacity is infinte*/
9 o# h  T4 r: d  ]1 L  g6 Zmove into Q_process /*Single capacity*/2 ^3 J* f2 m" p5 v9 @- X1 z

4 ]8 g+ R/ T! Huse R_A for n 60,10 min /*Resource A*/9 i8 _; t4 |" i& W
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send to P_B! D& z7 C8 g0 u) t5 e6 x
end
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+ ~/ f, m4 W0 t: R. R- o" VP_B and P_C is similar
: q7 K) _8 g$ {  b' [- htriangular 30,60,90 min5 O, C' j) A# O
u 60,30 min3 u; q. o. O0 y, J5 X( x8 ^

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in P_C, you need to send to die.
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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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# w$ i9 l& J8 x9 X6 WRemember 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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