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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,$ t( l6 i- z# p/ \+ D
  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." x% ^& g) @! k6 k. x4 l
  Loads are processed by each operator for the following time:5 |5 T, o! R, x7 I8 x3 N- J! e/ z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& U% C4 ]) |2 e4 l
  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.
7 o* w3 q  n* b  r; y$ ^  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 |% ~% ?( t/ }9 o! V  V0 kSend 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.: @: V# _( ?  `7 J( u

/ h+ t; N2 I$ d) M1 |# p8 n问题:) P$ n' D) E* }
After running the model for 10,000 days, what was the average number of loads in each process?, w3 y: N. Z* J

! g: ~8 \- N/ p5 P6 E; g7 v8 J不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving* n: f0 p9 L! V- e9 i. s! v6 F/ W
move into Q_wait /*Capacity is infinte*/
2 K- f; m8 T. D/ ], a" Z8 \move into Q_process /*Single capacity*/
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0 b6 y- F; V5 H" j. \$ b& ]use R_A for n 60,10 min /*Resource A*/
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send to P_B) G3 q" S/ u: I' t0 @8 v4 N
end
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P_B and P_C is similar7 g5 S) o: I5 N
triangular 30,60,90 min  W7 v) z5 `" ^" M# U
u 60,30 min! @4 U0 z/ t+ u% k/ ?0 T3 O/ k
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% S8 G/ W5 x) ?( |- Y) Y/ Xin P_C, you need to send to die.- y, B' ~& D$ b3 Q
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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." \2 p" j. S! Q5 w
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7 P5 _& d' D7 B% B* E& t1 |  ~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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