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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,  Y" |. A; c- v8 k( B
  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.
6 x) p' {2 o% i- \! v. H; D  Loads are processed by each operator for the following time:
- ]7 a  t5 l& u; G8 U  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 S% ~% ~5 r5 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.$ ^- t" q: q8 q& E' q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& `+ m4 Y$ I% A8 H
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., n/ e% P# d3 I1 `9 _: c

, [+ n! k$ }4 }- Y7 \% A问题:
6 D) a/ I. I) _  ^+ MAfter running the model for 10,000 days, what was the average number of loads in each process?
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. l% K$ v! |: c0 S6 m  [4 M5 O不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
+ w, ?5 d, z  [% ^0 `1 e+ fmove into Q_wait /*Capacity is infinte*/
& v/ f  \1 \: f' vmove into Q_process /*Single capacity*/4 }* M- X% ?! d, Q: I
8 A0 n, e# Q$ g5 U8 y' C( S
use R_A for n 60,10 min /*Resource A*/* Q- g. C$ o( E8 T

  k) y  U( e3 S5 B" \) Ssend to P_B& O2 H; B! l% J2 Z% W  N2 p7 t, {7 J
end3 K# K7 ~+ J! M+ ~: _1 C5 i+ v
# v: c6 ]. v; u; K" T( P) ]2 F) j
P_B and P_C is similar8 j2 x0 V+ i" X+ W! C; k
triangular 30,60,90 min9 y8 C: o9 l& a
u 60,30 min
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1 z7 _: P5 h* P5 o2 R5 O
in P_C, you need to send to die.
" V. w) T/ b5 v
: Z2 Z. C# n: }9 F( B! |* aThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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: C( R/ U, }2 T- b) lRemember 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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