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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,
8 w+ [+ T9 G1 }  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.
$ `8 a% p' g5 Q2 Y( d! Q" e  Loads are processed by each operator for the following time:
6 ?8 \2 A3 u7 b3 S7 X  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  l& _% R; k2 z- F- g1 ^, \0 _  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.. e/ n1 s  S' |2 H0 W" i4 f
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 C  x( e4 T% B( e5 T) ]Send 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:0 T$ t: d' e5 ~% \5 C
After running the model for 10,000 days, what was the average number of loads in each process?2 H/ a3 _+ Z" i) D4 m

: E# @; [0 D: k# Y2 F" ]2 ?' ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ ^' U' I) P& ?2 Hmove into Q_wait /*Capacity is infinte*/. o! {# r- X& I% k4 m
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/4 t2 X$ F% j! f

$ R% K. l2 m- R$ S# ~2 w* J: fsend to P_B
% i0 C, d9 z4 D# v) S$ {  pend
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: q0 N. e- }% }: i  Y! s8 aP_B and P_C is similar
. K2 ]7 R: W" X" M# Ltriangular 30,60,90 min
1 l9 ?- b0 ?7 s  tu 60,30 min
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4 j$ B  h/ I/ Q+ j) o/ T2 A) bin P_C, you need to send to die.) A# C0 R# r: M

5 u6 G- v4 [$ i& L; j& tThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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