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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,# \6 @5 i' K3 I8 a7 p' e! }- N
  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.
7 j% F3 u# s9 N* Z  Loads are processed by each operator for the following time:; m9 W' g% @; |% u9 ?" [. R, l% ?' U0 A
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 I. a8 ]. I* c8 H/ D! b! c3 \  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.
0 N6 X  {# `9 y4 q* }) \' _  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( h- n9 ]  {) g( w& E$ R' ZSend 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.# h0 ?5 z+ t" b+ ~5 P

  _4 u; \0 N- Y问题:
; b, ?$ E7 Q3 S) m: R; U: K; dAfter running the model for 10,000 days, what was the average number of loads in each process?
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. ~! U- m1 g9 ]; j) k5 I不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) p' f1 n' M2 j# L7 z/ Fmove into Q_wait /*Capacity is infinte*/
& A" {* a, P5 ]move into Q_process /*Single capacity*/: Z8 s$ z$ |" [: @
* _& Y" r) V! u6 f7 T2 }* [
use R_A for n 60,10 min /*Resource A*/- M4 ~: ~; e# z" \: Y1 g

8 P6 ^" w7 P0 h4 b6 w/ _3 _send to P_B
/ z3 l3 e, l5 ~; K1 h+ ?+ h& uend
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P_B and P_C is similar4 b+ ~0 u1 _  c) `  M) B+ s
triangular 30,60,90 min/ b& k+ l: o$ z6 K. P; v
u 60,30 min
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) S- o, q5 ]5 f' _2 jin P_C, you need to send to die.1 j' k; E0 g5 m3 {0 P2 X* f

5 `$ w; m) l6 E4 F2 B4 n; jThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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  R! [" l5 i* ~% `1 ?0 E, 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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