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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,
) W7 a8 Z* j% {" L/ E" C  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.
. ]  Q. d2 G) h4 e! v6 d  Loads are processed by each operator for the following time:8 `/ T. V( g9 x, O: B+ f( I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  N3 P& h. ]$ r  k; v7 ]' T  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.
: @! t4 k9 v1 D3 l& M  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- V% d# `% @, K9 g  Z, P: jSend 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 l* a8 o! G5 I: }% ?: I/ I1 z问题:; r4 i6 D3 B0 [: c4 F1 ~  {
After running the model for 10,000 days, what was the average number of loads in each process?& H, a- H. v) f2 n) v4 O! ~

) e; U7 c& q, _" i1 e2 V不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
0 Y, @2 {1 s# s9 Q3 [' W! zmove into Q_wait /*Capacity is infinte*/
+ i* [& b9 l% t4 umove into Q_process /*Single capacity*/% a9 M9 M0 w3 [, j/ I( j* |' i
$ n* [: ?1 P' m8 S0 `& W
use R_A for n 60,10 min /*Resource A*/. l- z1 V% ?) Y" w
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send to P_B
; h  y9 M5 F5 D- H$ Tend
8 V# a* G: `2 b" j7 m9 T7 e8 C3 J6 \, W6 l
P_B and P_C is similar6 X! R8 c% @% G! k- ?2 f; p
triangular 30,60,90 min" X  o* l9 l3 P( Q
u 60,30 min
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in P_C, you need to send to die.2 e9 v! E1 k9 H; f7 m

6 r4 Y' f, ~) L9 B& t! u6 iThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ ^+ S& `! W- h) `! r/ z& _

( _+ m$ C: z, [  O5 f5 V  v0 {
/ l. a& U% j: Y( C6 H; J3 c0 B- Q7 Z! fRemember 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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