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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,4 y) v/ w; [. \$ 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.& Y( K9 ]% `$ u, E3 T+ \
  Loads are processed by each operator for the following time:- A1 }* }# j& a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% Z5 ^( }5 Q% S* n& r
  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.
, Q( r( M' }6 z  ^: q2 I+ V  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ d8 d& C& ]. R9 TSend 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.
  c7 i+ ^, f' P0 F
8 d5 T( E8 I. H问题:
& [* l4 x# N5 m( XAfter running the model for 10,000 days, what was the average number of loads in each process?
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, M! [3 ?8 Z; ]) f9 ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& m- I$ `/ Y1 U" w, f2 p( Wmove into Q_wait /*Capacity is infinte*/1 i2 U& S1 m$ D- D3 f8 z2 O5 B: h
move into Q_process /*Single capacity*/- V! s3 @' m7 B/ v- c* H6 K
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use R_A for n 60,10 min /*Resource A*/2 j9 W7 d1 c% w: d: A7 e' E% B

/ a( h9 x5 M; c0 C. H5 }) c1 Q. o$ I; esend to P_B
. ]5 a; ?4 G( I: R3 Cend
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& m( ~% `" J5 A6 W# D5 H2 |7 ?: gP_B and P_C is similar
) G) F; |" a( A: n2 qtriangular 30,60,90 min
# O% c4 p) V; W' p% y4 ]9 O2 f0 `1 Nu 60,30 min+ n2 Y) \2 y( d9 U
; b) `+ b4 w: w2 p3 f

  a' k" O. j# l. Y1 bin P_C, you need to send to die./ o& }: m. y& G8 n& b6 h" Y6 d
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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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8 |& ^5 ~. E: {" Q
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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