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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,
; _. T2 h& h9 e% J2 v% ?+ r. X  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.
: [  ]4 `/ q6 ]% i( x# {: N: v  Loads are processed by each operator for the following time:
/ ^4 ?7 h, k8 m8 \  v: B  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 ~( e; a% t/ x2 z" t( Z* I' [; E  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.
3 }: R* q3 Z' e! }/ a# V' n, p' `  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 {( n8 s5 Q! ~" V- A& OSend 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.6 r. K4 M9 f/ [1 X
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问题:3 Q1 e' F) ?2 J5 I% m  T: I* O6 w4 p% L
After running the model for 10,000 days, what was the average number of loads in each process?, |! h! L% x5 d% V3 |/ c: V
9 F' _- |" A* w8 L/ x) ?
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving: u, \5 ~2 j& s7 D* A+ G" A2 \
move into Q_wait /*Capacity is infinte*/
% b& I. y6 U' {& Lmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*// G" H1 w  f2 m6 h9 c& @" v

$ Z4 x( {+ ?# [send to P_B0 B# J. T( ]0 `; O
end
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9 F- \( H. Q" M1 NP_B and P_C is similar$ s/ A2 ~/ v7 g
triangular 30,60,90 min
' K2 ^5 X$ v4 }  q! G6 b+ X4 lu 60,30 min
  e% `2 O0 y3 T- M9 s9 Q& Y1 Y2 }* p- _) |, {

. G- ?8 J  i: T: n" f/ G* vin P_C, you need to send to die.0 W  g1 Z! |, K5 i6 R5 n! T

, s0 X! L  H, pThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' M; f; ]1 N) i' U! W

  _- r( @6 z4 }  c
' }: v4 {9 h4 {. S) rRemember 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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