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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," G( R! E- c) y1 B
  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.' o+ R- h9 u1 `3 J$ ]# z
  Loads are processed by each operator for the following time:2 X$ n  U& E0 E5 A( r, V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" j; H, \4 g8 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.
/ Z$ [/ y) F3 O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 H. U0 t1 H6 i! g5 g6 R
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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0 h" Q. i! u. [: o3 N问题:
7 T; F0 A9 B3 m. xAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
8 _6 \. F/ R+ V0 e6 L0 S$ _move into Q_wait /*Capacity is infinte*/, Q6 |- q8 p1 o9 ~( {2 p
move into Q_process /*Single capacity*/6 d" ^: g/ y( w' j

9 F7 h5 z) }# T3 Q' `use R_A for n 60,10 min /*Resource A*/
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, T/ Y8 d3 ~6 J/ y8 J) `* fsend to P_B0 E7 M' ?% H: J& ^1 @5 Z1 F) i
end9 w* o+ N3 r* `" `

$ R6 Y0 M3 I7 v$ ^P_B and P_C is similar# ?& B  U6 L* S2 X6 p: K3 @! v4 g
triangular 30,60,90 min
. @! }" g- L) o( \u 60,30 min
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/ Z& w. y. D2 \in P_C, you need to send to die.
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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.
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4 P. n) C% n4 C/ b  E+ q' 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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