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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,
" i! B3 C9 U2 T& x, @+ q  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.& V* C/ m8 s* a0 G, h3 I4 n
  Loads are processed by each operator for the following time:! \$ o$ k, p% P/ }6 j% n! {( J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- g5 K. X( @$ Q0 E+ y  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.
  G- u; ~- {: B. ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ k9 ]1 v, a2 G% j' D1 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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问题:! \7 {, M6 `' j9 W2 ?, y
After running the model for 10,000 days, what was the average number of loads in each process?# b$ z* O  w: J3 I  Y4 X

' [& h* V/ K$ ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving/ M# \7 T! z* m6 s
move into Q_wait /*Capacity is infinte*/8 Z! s9 v# E7 `  j4 N1 C& n$ y4 k7 @7 s
move into Q_process /*Single capacity*/$ ^0 R$ @+ V; x$ n
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use R_A for n 60,10 min /*Resource A*/
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send to P_B7 ]8 S( \; P  Q. d
end- F7 i( k' {# K; V1 k
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P_B and P_C is similar  _) u: ~# j5 R7 N; N" N3 R
triangular 30,60,90 min; @$ w3 A& k9 O# e$ q
u 60,30 min5 |7 P2 t. A" [# ]
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in P_C, you need to send to die.8 w& e" m, b1 Z6 z% c

( z. F$ G; _, k- j% O$ tThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' ^3 Z% p3 N- m" g

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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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