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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,) N2 `6 _& c5 S, E# l
  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. v, W8 x+ n7 K' R2 {' S  Loads are processed by each operator for the following time:. W9 [% q+ k! ^# J: v
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." I8 {2 J8 C  p
  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.  }% f( g& j; g/ ~% }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! A* u" P2 }" U& F2 @0 y4 ISend 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.; q& K+ s$ Y9 L) ~
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问题:1 S7 R  z! q: m- x( x
After running the model for 10,000 days, what was the average number of loads in each process?% Q  K0 J: q) D+ ]( F

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
5 e: E$ [1 F$ B! @- D3 p$ k5 X  qmove into Q_wait /*Capacity is infinte*/( ^; ^! N  l! g9 I7 h0 u" j
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B- E1 h3 Q" V. y
end
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$ Z% I( }& I: |& x- k6 s* tP_B and P_C is similar+ r( s+ k: a* j4 I
triangular 30,60,90 min
0 V8 Z% H( |9 e' ~1 q: Wu 60,30 min
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in P_C, you need to send to die.
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* ?0 O2 M. T4 V4 o& ]* R4 s& i; vThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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3 O& |% ]1 i, \( Q7 o" p5 Q7 dRemember 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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