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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- M1 Y- F  E" a  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.
3 Z0 G& G! u, P6 r% H# d: H  Loads are processed by each operator for the following time:
/ r- w( ~; O( `) R, @( f% |  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! D0 n" K# Y5 B0 C. P5 B( d' ?  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  `# u" I  p
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' g) e8 U, g2 z+ m8 C9 pSend 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.9 c5 o1 i( g% s0 o( P" J
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问题:
6 [2 F1 w; N* w8 s( kAfter running the model for 10,000 days, what was the average number of loads in each process?, f& B8 g; c; |0 E) {

1 C; H! A+ `4 [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& v4 }6 u( J1 b" [, h: Hmove into Q_wait /*Capacity is infinte*/
0 w; n% R6 O+ D8 imove into Q_process /*Single capacity*/3 j4 e. R! X8 F, i1 d
$ u' R' c; t+ q# b# b1 K- `2 P& B
use R_A for n 60,10 min /*Resource A*/
6 Y6 \$ O2 B" B' q( G# c
. c  [6 O  _) B& w' Rsend to P_B
0 w# g) D9 N! D0 P2 ^2 j5 S6 Zend
7 ]. j  {; n3 @6 R: r1 q* b, n5 T0 S! L3 M# n
P_B and P_C is similar' o, y  J4 S0 h
triangular 30,60,90 min' H# G5 O- M+ Y
u 60,30 min$ _+ _* P5 ?4 t: c, P" d+ x5 w) X1 ]
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in P_C, you need to send to die.
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, n$ ]& [2 G# T: _' ]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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- Y7 m! h: t$ d; h. ]5 g7 h4 u
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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