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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,  F9 K$ t' o+ ^6 Q. ~9 b
  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.) M. Q# g9 D9 G5 O) E
  Loads are processed by each operator for the following time:- v8 I, j% q/ ?. d
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. P$ J4 v8 S( `( r; Q, b- G: S$ }# O' 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.
& E) P1 T# N: Y; P+ ?7 `9 f% E5 \  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" c- o5 I( E/ r1 I- k; J- cSend 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.0 S; c2 ?# M  g

% A, x: d4 L8 l7 o6 b9 l5 j问题:. [9 B: S8 L& O2 Z3 x/ B3 ]% E
After running the model for 10,000 days, what was the average number of loads in each process?9 E* v! L3 K. @1 N* }

* ^0 x; a  G' l/ S. @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 n, b$ u" _. ]: q. y
move into Q_wait /*Capacity is infinte*/
! q# V* n9 E- T2 C+ Y! {move into Q_process /*Single capacity*/, D4 @" u3 M' z) x

- E% c3 w( E6 _- A: M4 xuse R_A for n 60,10 min /*Resource A*/! K0 v; Q! K7 p- T  m0 a% w5 S5 r
  E; `( h8 ]# N# E3 m
send to P_B: R0 i' b! a0 s# F
end# c1 B2 ?- A3 p% D
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P_B and P_C is similar$ n/ D2 D7 f, ~3 U
triangular 30,60,90 min
' K- d5 ]' H8 d3 [* g. j6 \+ b% s/ qu 60,30 min
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/ ]0 d1 O( ]% L3 @* Z' T+ Kin P_C, you need to send to die.3 T- b0 E3 w* y* D# f9 u

3 h5 B+ ?; }) q8 d) n& eThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.9 h7 S8 s+ _' ]+ j
9 q5 B. A& X; A% o5 l! q

7 B, k2 @" }( L. TRemember 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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