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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,
1 o9 M* U. F' _% K* l8 s1 h  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.
; e/ q1 ~+ ?* V) \6 J, L  Loads are processed by each operator for the following time:% p7 D9 J  \) `7 [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 I% ]& [% V/ E2 N' ]+ V" S2 _  w
  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- \/ E: t+ y/ n7 r
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: ?8 H+ a" ?# I: ]  X" N) Z/ ^
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.; ^4 u; z5 S/ |$ H) z
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问题:0 z6 N# R  s* {4 s! O# _
After running the model for 10,000 days, what was the average number of loads in each process?# V" F; ]- T. K4 R6 l
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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; y! h6 r  ]6 n" }
move into Q_wait /*Capacity is infinte*/
8 U( ^0 c/ O% ?8 @6 F4 b5 bmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B) S# _. |2 S6 J5 ^9 [4 R
end
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/ K% z% h- o4 ]5 e" V, ]' qP_B and P_C is similar% ?: i" O; a2 c
triangular 30,60,90 min" v, ~" Q- `- ^. P3 o* ?
u 60,30 min" a. g) L) E2 v7 g! E/ a, t  n
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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 y: h9 {* e) Y3 D3 L$ {8 l/ 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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