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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,# U) R7 ]% |. j- f+ O! a4 |5 C7 ^
  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.& ^, }* x+ `( M# w/ i; P! B) s" L
  Loads are processed by each operator for the following time:
$ L: d1 ~/ A* @& o4 s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 ~0 `9 [1 B2 t5 g
  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.
& c" H& n# j4 L: j7 O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ E4 C5 h+ M8 s1 ~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.' X7 S% l! l; G1 S
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问题:3 @" F! l3 n' l- U
After running the model for 10,000 days, what was the average number of loads in each process?# K( H6 r( g  n9 i: Z+ O  d

4 x7 u- |5 _3 G1 f5 Q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; ^5 Y7 N# v) W" {4 l2 [/ M( ~! e: s- }move into Q_wait /*Capacity is infinte*/2 e. F( }0 u6 ?( C
move into Q_process /*Single capacity*/. D+ R# @# Y2 {- X+ H3 {4 o

; o: v3 J+ s. b! [: Euse R_A for n 60,10 min /*Resource A*/
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send to P_B9 R9 b: T: p6 m3 G- u, D& {
end3 z' k6 {/ P, \3 l/ b5 u" B
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P_B and P_C is similar! \8 S4 _4 `  f4 S+ A# e) N
triangular 30,60,90 min
; R, B( E  l% n4 zu 60,30 min, }  G2 c' M5 q2 M. Q

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2 r! Q8 |. q2 h' Y0 i, v% Y1 Y; Oin P_C, you need to send to die.! r8 `4 V9 m( k1 W

' A. Y1 T; U+ W/ NThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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4 c! A+ F2 [' B8 i# d' 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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