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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,5 D" ^5 I$ I: I: u+ a9 a) G7 K8 x
  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.5 v. u( }" C3 L
  Loads are processed by each operator for the following time:
% d! ?! u$ I* Y* X  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ H) x* b# C% N2 A
  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.
. K4 N& Y; K5 {0 a: b+ m' C  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 L' Z% t: ~/ \, c  V' q. t2 \7 U
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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' q5 H4 }! O( i0 Q9 P, k' |问题:
' H. [- L- S+ E# FAfter running the model for 10,000 days, what was the average number of loads in each process?! ?# U- r  Y. g) o
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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# `& c) p9 Z* D) N6 E1 }. l
move into Q_wait /*Capacity is infinte*/6 ~" m3 s) k* G* y
move 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# r9 U! A) K) H* n( b/ i# `% o( `
end
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P_B and P_C is similar
. ~3 N( ?: O( \/ k2 }% c4 U7 D, ytriangular 30,60,90 min8 u1 r  O. L, G! L& o
u 60,30 min! a! U+ F# g7 y  B% W
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  [" A# X8 `! t# _: e0 v0 H& Oin P_C, you need to send to die.
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1 [* V; W: V. b9 _7 _, _/ WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 z0 I, N2 ]( D+ D1 |5 T# m

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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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