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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,9 N1 J4 p6 K/ w, D5 u
  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./ `+ t4 V) E( X4 o. ^, T$ j
  Loads are processed by each operator for the following time:5 w" E4 x$ F1 S
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 t, W9 g) u1 t) w: T5 R  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.9 v) T$ @, N- R" c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ f* S+ u( ~6 ?# h4 P+ {
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:
# I) g$ w" D! m; v3 lAfter 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/ f/ ^# R+ r) l3 v3 e& t
move into Q_wait /*Capacity is infinte*/% V7 B5 d$ \' T. ~6 D% [
move into Q_process /*Single capacity*/7 r; A* N9 T/ m3 _6 `
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use R_A for n 60,10 min /*Resource A*/3 w! h% K& N) `* \2 L# Y

- G' @& p, L" i4 C5 ]7 J; Z: Zsend to P_B' D! Q4 C' r! w$ v
end
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P_B and P_C is similar: U  B' q/ S; A8 X4 Y& `0 c! `( @
triangular 30,60,90 min
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in P_C, you need to send to die.* x0 |6 u/ I1 y" J2 O8 x

1 Q- ^6 {# S4 uThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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+ ~" `9 \% a  L. N6 F8 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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