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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,. S: m* R( _' K
  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.' P. _( t8 W0 @
  Loads are processed by each operator for the following time:/ g2 E5 x9 P, {: X9 Y4 u2 ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% T. O$ `, {+ J- A6 r3 w7 L
  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.
& i( g+ ?! m4 w7 _8 n0 o, g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. V; b4 c. `3 a4 wSend 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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! l* ^0 q: h0 o; ]) p: D# p问题:2 o5 c8 g. m  a$ L  j
After running the model for 10,000 days, what was the average number of loads in each process?2 d, I0 T' B5 K" L. e

/ |# _1 {/ @% a- @- L不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( D) ]+ ]8 c5 y/ I+ F) e0 fmove into Q_wait /*Capacity is infinte*/
, ]( i* ?9 \; V+ B% {+ O8 Q4 [# @" Omove into Q_process /*Single capacity*/7 D; }1 ~* e! x  v- a5 M
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use R_A for n 60,10 min /*Resource A*/, T" {; b' G4 A
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send to P_B
4 \! }# {/ p5 r; y* E5 Lend
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" c* B6 n4 Z6 z' p% o' w, XP_B and P_C is similar4 `8 J* m  U+ d) ?6 c
triangular 30,60,90 min! _) H) _% E# \9 `
u 60,30 min2 M8 o0 W8 O# S; d; d4 ^# s+ j7 s
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% P. y" t( {0 G/ I; J: Zin P_C, you need to send to die.
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5 [$ O8 |3 h# o+ c8 uThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.4 C/ J& L" v" i
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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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