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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 E/ _4 A1 E( p9 R! 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.
3 ~& q) a. t% v5 p  V  Loads are processed by each operator for the following time:
, j& G0 h3 r8 z' u1 ^  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" a: V- [7 X4 ~! |7 h& X0 J  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.
* }5 I/ W1 O  t  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 H5 s+ ]/ Z! U1 i& ~4 h0 MSend 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:
4 O5 w. R- a6 hAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
/ M0 Y9 X( r' `8 [move into Q_wait /*Capacity is infinte*/
# h: g+ ]3 p8 h( J4 Y- lmove into Q_process /*Single capacity*/+ v& p' G0 C. b9 i4 i) \
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use R_A for n 60,10 min /*Resource A*/# |5 j; T' ~: u5 u+ {1 {& E
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send to P_B! M1 n/ K$ T- c7 D
end
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P_B and P_C is similar
. C8 T" s( E/ g# A; N( @) Otriangular 30,60,90 min
6 {8 Y7 n$ j* H8 c# d7 Wu 60,30 min4 h! L1 _* P' i, T

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in P_C, you need to send to die.
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* h3 ^# e) ]1 u  g9 }Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 e" y3 a; \* z
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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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