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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,
% Y+ |! _; F. V  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.
" `) z' @) w6 w- @' I; U- I% I: D  Loads are processed by each operator for the following time:3 r7 Q. H, u5 n" b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) H( t. H3 G  k8 q: L: I, J
  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.
2 d& z. o: Q) \* S8 t- o( w3 b9 ~! T  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# E: V  j- I& K$ W# r+ r- }/ s# HSend 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.+ }) g0 ?9 K8 z% G+ g4 q
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问题:
9 Y) p" _4 N" y4 u  z' R8 Q6 |After running the model for 10,000 days, what was the average number of loads in each process?
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# A* B6 _, e# h" }9 l不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ N; @4 v  o) A& u0 E8 L
move into Q_wait /*Capacity is infinte*/
+ |/ M9 ^6 W" }( Gmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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, k" ~  @, U$ n) M. Nsend to P_B) I  X) H: d- y; n. ]( q! w
end# j# V& X: z4 d

7 u4 ~# C: ?9 C. {& Y4 WP_B and P_C is similar; \; t) S) k( X
triangular 30,60,90 min
( t! U) n5 {: [: S0 [* su 60,30 min
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& ^/ N  e) ]# i5 s" \) Q- |in P_C, you need to send to die., M3 N/ r* h& ~" E) h2 G

+ D# s3 t' a! P# \- a) qThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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- ^" O7 A5 C9 S, t$ d% ]0 x$ mRemember 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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