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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,; T, Z9 ]2 z0 @& K( M
  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.
6 Z3 r( q4 i+ K5 h2 {  Loads are processed by each operator for the following time:
3 {9 P& p/ E+ v7 }! ?  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! Z: M  Z0 F2 t2 M/ x9 ~. Y' d8 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.
; s4 T, N: p6 u3 P  A  `, @. D0 A/ Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! P% M  Q, R* V8 t
Send 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:
5 L2 M+ o# n2 r/ v. V: W8 IAfter running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving1 Y: {* x+ ?3 Q# Q1 H! A
move into Q_wait /*Capacity is infinte*/$ Y, _0 w5 h4 X$ V& k+ E; Q. h
move into Q_process /*Single capacity*/' P7 ]+ i1 V# O" T9 k) a+ q  H
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use R_A for n 60,10 min /*Resource A*/) ?8 P2 C+ `* O' j  P/ |

: _) {/ g  ^; dsend to P_B9 q( T! r' q# j$ C- t) B( b  U+ \
end
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P_B and P_C is similar, \! q. D: M2 `2 y3 W$ f
triangular 30,60,90 min5 m. r" ?3 q2 U' ~
u 60,30 min
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in P_C, you need to send to die.
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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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3 ]$ y& X) G" L; C6 Q6 g2 @5 KRemember 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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