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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,: V0 g2 x# R" S8 U8 N3 v
  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.0 x- f+ H2 P" R
  Loads are processed by each operator for the following time:
/ A; k, T8 y7 k4 W/ k  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; ?9 p) {# m3 s7 _- F. {  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.
1 g. Y0 l" [  j% Y% f% @- C( S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% N; L6 |% h5 x$ |( q/ XSend 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 m" ]5 _9 J# q1 [- H
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问题:
; k! u" i$ Y! `, Y: f6 {: P  `After running the model for 10,000 days, what was the average number of loads in each process?+ d- n6 O# U8 v3 q9 B9 C0 e1 k

9 C% i7 s. [% n; ]$ {# L5 J6 i不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. F0 [  j; ]8 Nmove into Q_wait /*Capacity is infinte*/# ^! l( f, U9 E
move into Q_process /*Single capacity*/% ?8 G# v: E" s; N( p
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
5 J. `- H6 i# m+ \) [# _2 Oend
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$ [# r0 I  h9 ^6 q2 `& K, vP_B and P_C is similar
0 U6 D3 y: b8 q) J5 X" n: jtriangular 30,60,90 min% p# S' y3 G; D# b
u 60,30 min" s  Q# L. U9 b0 Y( o
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' H' S+ w1 N* d5 U4 |in P_C, you need to send to die.! S3 v& O% J- M0 b  `0 B

" h( t4 \3 W- Y- K* M- FThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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