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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,
) X6 ^! U3 D( O0 w  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.
, A( q  g( u, \  Loads are processed by each operator for the following time:
6 [3 q4 l2 j0 y2 w8 ~7 O/ A  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% G* ^( |: `- _8 I, C  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.! w  X& b$ m+ e, V/ H; F6 n1 |
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 |' f9 p% h$ Q( t" C9 V# bSend 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.
" Y1 Z- U" f; J3 W
/ n: W) ^, Z, b' b" }; S, _5 a问题:
, D2 h8 b8 [. PAfter running the model for 10,000 days, what was the average number of loads in each process?5 j/ Q* }& Z, \7 K9 w3 d

' V3 O( E6 b/ g4 g# {- O0 y! Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
" q) X* {- f3 a/ L+ Hmove into Q_wait /*Capacity is infinte*/, |( d4 u1 o- K/ Z# t$ g7 d
move into Q_process /*Single capacity*/& ]+ x& S7 r) B

- v6 @; W+ j, w4 X9 ]use R_A for n 60,10 min /*Resource A*/
  p# F( c! f: B( X1 m9 A6 a  M1 k. a4 _' N$ q4 B
send to P_B; Z' _9 _* b% X. G7 Q; e7 g' g8 A
end
  l! R, d- B. x- x( u, f
6 e& L2 e) D- {' G6 a1 M# a3 d! ]P_B and P_C is similar* p- {3 g# D% p- n$ k
triangular 30,60,90 min/ a" ?+ R( u5 q: P/ M; |0 W
u 60,30 min& e& i8 w. a0 }* ^- Q

6 y1 M: c, |7 h& O2 Q/ z9 g/ \8 w+ A" e- }4 ~
in P_C, you need to send to die.8 D5 d3 \1 f/ d8 D

( z' z' c0 J* v' c. X& YThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
. g" G8 d6 _( M6 \
5 ~% E* d2 f! H7 o: I- ~+ C+ H' `) x
8 O. d, X; }$ o; _3 B- p6 nRemember 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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