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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,. Z$ z; `7 I  t& [6 r
  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.; x! U- E4 ~/ d8 t4 ^  l
  Loads are processed by each operator for the following time:
+ f, O2 f. p2 W$ {  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* T3 |- R5 C  H0 r7 c( P7 U  w  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.
8 B& B3 d' I$ W0 b$ n% @  e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( p$ ]3 ~( E5 b) z6 _6 QSend 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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7 Z6 P  T5 _! A, h* O6 A7 ]问题:: w8 C% b; L! S* X, H9 j! J
After running the model for 10,000 days, what was the average number of loads in each process?  ~$ M, V% t. ^' l6 I9 ?. E

- N2 z, }7 t# c" r& X不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
4 f  t6 c$ e. o6 Zmove into Q_wait /*Capacity is infinte*/% \  F8 r. Z* N1 e0 E* J+ m/ ~/ ^
move into Q_process /*Single capacity*/
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3 w4 L  H- I* M4 Suse R_A for n 60,10 min /*Resource A*/; T# v7 b0 _1 J# @. R5 k
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send to P_B
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P_B and P_C is similar
  R# Q/ Q) |* @2 Jtriangular 30,60,90 min& ~% p/ o) n2 c* i
u 60,30 min
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in P_C, you need to send to die.+ B$ o  Q% h6 T+ A  W

- U) O* q3 f6 I" pThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* Z7 k/ T7 q: s5 f% U

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5 c( n3 c5 U: iRemember 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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