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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,% ^$ m+ O, F0 K3 l- m
  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 S% P" p" y' ^2 h; ^! s& k  Loads are processed by each operator for the following time:. X- A. _# m$ N* t6 U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ @/ U" y: j1 H9 h! F+ A) I
  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.7 b2 K4 n2 O- F% c9 V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ |- L% t  M8 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., Y( e' m" c- e; e' U

4 \9 j1 ~! N2 u8 E( x6 m, H: j问题:
% t( D0 W" t- E6 r2 B# L3 g7 JAfter running the model for 10,000 days, what was the average number of loads in each process?1 I1 _' L8 V; m4 M6 v

: Q3 k0 p9 m" l6 U8 }3 U$ e不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving, I8 [" F8 O2 L5 L4 f
move into Q_wait /*Capacity is infinte*/0 E# C8 O% R% N3 p1 F
move into Q_process /*Single capacity*/2 o  f$ y5 [/ J. P5 {- H

/ t( `" ^! B" w  }4 ^use R_A for n 60,10 min /*Resource A*/6 ], Q- r/ m( P" x# I; N

/ e( h2 i6 S& k9 C) g" |send to P_B
7 m5 n. U- U8 h4 ?5 M+ zend- W9 j5 ]2 a, Y6 ?6 p/ A7 n
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P_B and P_C is similar
6 O# k9 l) C+ M  W1 z( Utriangular 30,60,90 min9 J7 u  e) P$ }, c  \0 g$ M. y6 H
u 60,30 min% w/ i% K1 }" A$ O9 o  x/ b# g

) K" _9 s, @1 ~  g+ z7 E* E) p2 c2 h! r! ]" ]/ {
in P_C, you need to send to die.
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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.
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' \% G$ }3 M( U( \5 g# k" i9 k2 Q' S  ?$ c
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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