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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,
, r5 W; U* w2 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.
+ I* M2 k( q# m  Loads are processed by each operator for the following time:
: Z+ ~7 w* M& \% A: |  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- W5 M6 X8 [9 H. i5 d" l/ L  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.
5 }' H3 d3 o: a& z2 |& o6 }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 @; J8 g/ N! rSend 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.
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问题:
0 M5 G% Y( L! F7 m) E$ ~After running the model for 10,000 days, what was the average number of loads in each process?) B8 B9 x( Z0 `7 i% e0 m

" [' Y- M3 l# X0 ]' G. Z4 D% I6 `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving6 U+ ]0 K4 H6 v/ H2 v' m
move into Q_wait /*Capacity is infinte*/
; V2 [0 K  O  h- i( m9 smove into Q_process /*Single capacity*/7 R5 Y$ }- g: A" y* n% H

6 p0 Y+ D# F0 L7 [1 h. n. Fuse R_A for n 60,10 min /*Resource A*/9 {1 W/ @7 q& n1 e6 H( E: c

# M7 b0 U7 V1 z) i% s* A4 Y3 u' `send to P_B" [  x, E0 v% r( }) S
end
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9 b# ~) _6 {/ b! T3 vP_B and P_C is similar
1 U  c- d2 D" H7 p. Y- Wtriangular 30,60,90 min
( {! T) ?% }3 A& z) S3 p6 ru 60,30 min
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in P_C, you need to send to die.
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6 W/ T! n. @' W5 g2 K2 M% B+ tThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. }' |8 j3 g9 E! r+ v

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  C7 L9 Q/ K8 R; e# PRemember 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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