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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,/ f, |9 D0 [$ z
  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.
4 q# [' y" f4 x& x  Loads are processed by each operator for the following time:( A6 G7 W( c  A8 ~0 \8 k3 k9 r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  A/ j, ~5 z6 C$ \8 `; u; u/ n' P6 E  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.3 b" u7 d/ P, A, @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 n! ^' Q2 l: o3 }/ ]* n6 O
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:
1 e, X3 _5 s8 j" ]After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving* [; f7 |+ |, `9 ?; |
move into Q_wait /*Capacity is infinte*/! ]. i/ l1 `& x# ]
move into Q_process /*Single capacity*/
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3 K! A5 z: V. C2 ouse R_A for n 60,10 min /*Resource A*/  |% u! t) K1 U  Q3 b

6 ?9 k( I7 A! {3 [3 Zsend to P_B* G" R- M+ s) r
end
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0 }0 v* S. W2 ]* w4 F! w# SP_B and P_C is similar
  n7 `) R% K; w& K& l0 e- dtriangular 30,60,90 min( m+ r6 D% U6 d" U
u 60,30 min
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in P_C, you need to send to die.
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0 u) E' D8 O# F0 i4 t% KThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 x; ^! i; u" |/ ]) t% j
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8 P1 G! i6 p. \3 ?' xRemember 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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