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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,
  D5 X5 `3 [+ G$ W& A+ I  S1 W  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.
2 b; ~! \5 F6 g" K7 Z  Loads are processed by each operator for the following time:% C' U8 ]. m3 Q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# v" [* U- H+ h% \; Y- Q4 o  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.
5 _0 X6 ]0 k" O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 O) W% L9 y( ~' i5 {) L$ d8 X7 H  x
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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% R$ W9 E0 O8 c3 E# k- e8 e, x) p问题:3 ~$ O) H5 q# Y% t+ a% e
After running the model for 10,000 days, what was the average number of loads in each process?9 o+ v% z& f7 K$ v8 S

. \* B# f8 E) r& B& d( W不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving' ~! t! y7 ?2 G( c7 F1 |/ H/ [
move into Q_wait /*Capacity is infinte*/" d6 _4 K9 P+ r& O& S1 g# a$ N
move into Q_process /*Single capacity*/5 F. H, ]; S+ @$ ^0 _  Z
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use R_A for n 60,10 min /*Resource A*/
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# }* `% @# J9 o  g8 Dsend to P_B
4 M. s+ {+ ~& a# v4 y' \end3 T! ]3 n( c1 G$ C! J
  x- r8 k# Q1 E% f: T$ D. U; l
P_B and P_C is similar
1 a8 l: I" ?: B3 }triangular 30,60,90 min
$ E, J4 O3 \, Cu 60,30 min- N; ~3 G" Y. A$ e$ E) A
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; _4 v% ?; c7 \( kin P_C, you need to send to die.. E8 h% O* ]+ f6 ^$ L- Z

6 L3 q3 s% {: f! X0 \& }+ b' mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.9 F5 [2 A* {2 l* E# N* \% L, q5 p

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! p- g. i  z  w) }8 r+ g" ]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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