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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,7 G& H2 S( V0 N
  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.
8 {$ E+ b5 ]6 J% c& r5 a  Loads are processed by each operator for the following time:4 s! S3 z  I9 Y) s& O- h* d1 U! k
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& O- M/ Q# D& N8 X  j  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 ^" x: b0 S* M/ f" x  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 P5 o+ g# A! s+ w  M5 ^, I: o1 fSend 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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# ]% A1 u) }7 [问题:
8 X( R5 s1 f: a  {9 v4 p  PAfter running the model for 10,000 days, what was the average number of loads in each process?  M# J& X& ~, l
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ r  Y7 F' [5 w- u0 r: Pmove into Q_wait /*Capacity is infinte*/
3 r) d1 o; k6 P0 {- _: \. gmove into Q_process /*Single capacity*/5 {& g5 f( V# J4 j, K) Y; w
0 J7 K6 K: y& k9 b7 u) {
use R_A for n 60,10 min /*Resource A*/
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send to P_B
  d) O! V7 J8 U$ d$ ~% Rend
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1 I  P1 W( Y7 G' Y: C# q1 }P_B and P_C is similar5 q4 M8 ]0 h, W0 x1 T
triangular 30,60,90 min
7 }3 W" s$ a: ?8 C  t( [0 \" Yu 60,30 min" M6 m6 Z) G6 m
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in P_C, you need to send to die.4 s! ^2 [5 w9 c
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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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2 b# U7 W5 @) V( eRemember 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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