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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,# Z+ X  {0 W; Q: y* C1 W4 H# u
  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.  z0 ?5 @9 q4 k. y8 ]9 q
  Loads are processed by each operator for the following time:  p* _% C2 t' N; @& \
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; S: S1 U' A# f# g5 Q# q
  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.
( c; e2 s* W8 L) h6 v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: e8 M9 X- E; 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.
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问题:. N3 E( @" u2 Z+ d% b: T
After running the model for 10,000 days, what was the average number of loads in each process?
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/ `; I  Q0 p( R7 ^不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 g. v) t/ m& g& s+ m3 S+ ]
move into Q_wait /*Capacity is infinte*/% J! D% e; r7 m; G
move into Q_process /*Single capacity*/- [( G. c# ?7 A& b0 @" }; j+ w

3 e9 _2 H* V+ s6 [use R_A for n 60,10 min /*Resource A*/: G$ x* U4 h: N
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send to P_B
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/ w7 v" s  z9 iP_B and P_C is similar
; C: a  V. O2 ?triangular 30,60,90 min/ h$ v$ \& u! Y. R
u 60,30 min
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* L* @% a! ~, x1 e5 ]  N( D! u+ gin 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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& N: w# [5 K7 U9 ^/ _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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