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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,
& h; F, q8 C( A2 b" D" ^  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.
0 n* u2 x7 t$ l" P' t# M% Z  Loads are processed by each operator for the following time:, L. l+ X$ K. @9 ~3 F  \) k
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" c9 ]% M3 U/ H4 E) b/ G  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." T# \+ Q$ @1 \4 a3 V7 H
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" l/ ?" k( R4 ?$ ^$ ^6 F5 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.
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问题:
, l- }$ N/ {  f' U' }0 \After running the model for 10,000 days, what was the average number of loads in each process?% z$ O3 v4 ~+ A; Q# ?( r, e5 }

* e3 k6 [8 [+ v7 P& r& Z0 m, D不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving/ X$ z% z0 W2 |& x
move into Q_wait /*Capacity is infinte*/- E% N6 w7 S( M* e
move into Q_process /*Single capacity*/9 I# l+ z3 S/ s0 x

9 P" S3 S2 z9 U" I; W6 W2 Xuse R_A for n 60,10 min /*Resource A*/0 m" x/ ~: c4 m) D
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send to P_B0 f' ~/ K: Z. f5 A: n/ K! K. }; S
end' x0 \$ }) B0 U# v" f
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P_B and P_C is similar* O, v& w3 `# S' k% u
triangular 30,60,90 min
& M; N" S8 Y/ W" o3 x! s' f  tu 60,30 min
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in P_C, you need to send to die.# b: P9 c" q3 J
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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.) y# Z: T! s4 O, ^: ?! H
8 v4 y$ v0 \" O8 V* f+ x

) f+ S- ?6 D; O$ i8 JRemember 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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