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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,: t4 K, W+ E( f
  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.) ]* u* f4 `7 T
  Loads are processed by each operator for the following time:
, j( o" `! \' g: h9 o4 j  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  H. N# ~( l$ J( W5 V( g$ S  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.8 K3 Y& @/ B: _! G( w1 i
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# X8 y2 s+ |+ W  O9 z( nSend 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.- T6 m8 h0 T1 @# k0 Q
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问题:8 i' X( m2 S/ r0 g1 E$ `6 A* V
After running the model for 10,000 days, what was the average number of loads in each process?" d1 f4 a. S% R7 A0 @  [- d" H; I

7 w6 a/ {% p) M. |不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 J5 v# V( Y" u, U/ ]
move into Q_wait /*Capacity is infinte*/6 }7 m& ?. f! ?  l! T/ u, h2 A
move into Q_process /*Single capacity*/) t2 @7 X. B$ W/ p5 u$ K9 r
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use R_A for n 60,10 min /*Resource A*/
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send to P_B; F7 `( G& {4 |2 s% `
end  D5 _9 z, o1 P, c$ ], V

6 B. _% o2 V3 ]* bP_B and P_C is similar: J% U8 |2 _, T; S. `$ A
triangular 30,60,90 min& O% a5 y: A) O' q2 S
u 60,30 min0 o2 q! e* ]8 J( W4 v! U
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% o4 Q3 W. V" N3 `in P_C, you need to send to die.6 d' p: r- e7 S0 I7 y* V" }2 N
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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.7 V0 k. Q7 T. K* T

* j  {$ i9 \% V* j( v7 b- f1 J. W( y$ i2 v  o5 r
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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