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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,1 r7 x" K! V  F) z3 D
  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.
: G1 q$ g& Q% }) A( r  Loads are processed by each operator for the following time:- H& |/ }2 I. I& |; Y) p4 n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., Y7 N- S  O1 a6 X( x- e
  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." H  r9 S0 W$ E+ w" X, Z' `- v8 T3 g
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, z7 u7 I$ l: R( u5 |: s* X+ DSend 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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6 A( D  F. Q7 x7 |问题:
4 v$ w4 g, w' R! K# S' lAfter running the model for 10,000 days, what was the average number of loads in each process?9 z1 z, q* M. a5 T! F* i# ]

9 j" i  Q  M6 P$ D2 _3 [' U  Y不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ |. L6 J' `; h- k+ ]; C2 |
move into Q_wait /*Capacity is infinte*/, f  G5 r9 `8 A7 b* w% D8 W
move into Q_process /*Single capacity*/) T7 R6 Z+ |, ?/ M; j2 _: ~
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use R_A for n 60,10 min /*Resource A*/
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2 f& a& U; H4 u  m; ?, Usend to P_B
* ^9 Y* ^, X! F; Uend
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" D) M5 Z- W3 cP_B and P_C is similar1 g" b& |, b' a) m
triangular 30,60,90 min
& k" k8 S. }# P+ u' G# y7 |$ D2 h4 ku 60,30 min
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in P_C, you need to send to die.% a$ S% Z8 w6 F2 m" W0 Z5 \$ ]
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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.; ^6 k) K* m) K
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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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