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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,& m3 P- F4 i0 o
  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.
5 q2 K  Y& L. ?2 L7 n$ F' Q  Loads are processed by each operator for the following time:9 R$ N9 e0 Y# Q: r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: W+ _8 \3 a( ^. W5 h( g' L9 \
  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  ]& o0 f, D) O2 a/ q( C
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* g7 a' {6 o! [6 r1 ASend 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.8 f) Z, T" y+ F# S9 Z

$ g/ p1 @/ b& p, E* ?' F# `4 @+ v问题:9 {8 n( C9 j* z9 x0 C; o
After running the model for 10,000 days, what was the average number of loads in each process?4 k7 I0 S# I3 o

& R! s: h% K6 }% N不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 O6 e7 O7 N. T6 L% N, T, I
move into Q_wait /*Capacity is infinte*/
0 \# r6 V) z# mmove into Q_process /*Single capacity*/, t; m9 s$ [" d% v

: @% e5 ?/ v* {use R_A for n 60,10 min /*Resource A*/9 n" ?8 F4 E2 `. Q. C

7 ~' N# a. l4 q8 ^- K" p- i  s! |send to P_B# l0 T6 c7 M( i+ ~
end" u% e  X; W6 |! `

$ p1 K  w% R! N( E5 I% EP_B and P_C is similar
( l2 v( O8 r8 [# n& `; ?- Y$ P) l! @4 utriangular 30,60,90 min- F8 ^4 n. n7 d
u 60,30 min! o7 L3 f8 z0 j" ]2 @; H7 l: p

( V+ V9 b1 {+ m4 T! P! A  o. V: T2 w+ E2 }2 j  a( o& H  Z0 u
in P_C, you need to send to die.$ M$ q8 C8 J6 O& e
; U) {$ r8 B/ Q! V% _
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
9 ^, `( y: v# v
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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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