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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 G% g- p: l! o, x. p  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.* f" ?3 O4 X3 r# }8 t' p
  Loads are processed by each operator for the following time:% L8 t. Q2 }* w* k
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: U# s9 Y. g) v  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." h6 ]* r* b6 D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 n& \4 ?. p1 t3 s+ i
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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/ E4 g( {' C/ `! j' F% _. d' n8 Z问题:
% _6 X1 {& A, L+ IAfter running the model for 10,000 days, what was the average number of loads in each process?
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0 z& j1 |, q' X5 ^不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' I* u- B, r5 D" u& f' umove into Q_wait /*Capacity is infinte*/+ z8 S% }1 v' U+ K- W
move into Q_process /*Single capacity*/* ]1 ]' U: b- L

% t0 w/ ]8 O( K/ Cuse R_A for n 60,10 min /*Resource A*/4 X5 V$ _, ^# s1 r1 d
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send to P_B3 a* D7 H9 T, ?5 @; e
end" b/ |  N1 h8 E' I6 E( c5 ~
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P_B and P_C is similar
7 L9 F+ y; i8 s7 btriangular 30,60,90 min
) b( i' k8 B- Yu 60,30 min# K% w! x; \0 m+ F- ^, {1 k' f5 h
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in P_C, you need to send to die.! {. S0 R% e6 V" F/ X

( x. T! B4 a7 {1 m: x9 WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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$ y7 B7 v6 {* R5 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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