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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,' Y' u& w: ^/ G! w9 E8 i& F) G4 |
  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.! y. Z8 h. g( _0 g$ k
  Loads are processed by each operator for the following time:+ r7 c( |$ Y8 D6 F  ^4 A
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  O) A0 _' Z: m, e8 O  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.
, i6 J; _: [$ S0 ~$ O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( O+ ?  p- M4 [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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! X$ }  ^' Y' Z' D$ v: T8 |问题:
9 h. t$ f( @) c1 Q3 c3 I! AAfter running the model for 10,000 days, what was the average number of loads in each process?/ \4 w* i8 F2 ~. `! b
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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
. S! @+ I1 ~+ _9 c+ A) y4 mmove into Q_wait /*Capacity is infinte*/- g3 g: v  M, [6 l1 J
move into Q_process /*Single capacity*/9 M% U2 N( j5 B8 p5 a
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use R_A for n 60,10 min /*Resource A*/
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send to P_B( f3 S/ `! w" y3 b
end
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  }5 Y, I# H6 F$ jP_B and P_C is similar
" z+ o" @- {! |1 I0 T4 }3 qtriangular 30,60,90 min
/ U' [4 G  F/ b5 s, ~2 tu 60,30 min
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in P_C, you need to send to die.
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4 Z. h5 j# o4 e  sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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6 @9 x1 D: S2 @; a  L" M2 KRemember 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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