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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,+ K; y- Q* B9 H* ?3 U
  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 _) A0 d8 @* r0 S0 Z
  Loads are processed by each operator for the following time:
5 q/ K7 b+ C9 e9 }% K3 v7 m6 _/ D  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. ]0 g) R) z( [" ?% B% P# d  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.% v- B6 W* N4 o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: E# G6 j6 q, O  ZSend 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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* Y. k# g; f2 O4 H6 j7 n; e8 e/ a, E问题:+ I. ?- t/ [( b; k, g: ?
After 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 arriving. w# }. ]9 H) J! x  G# u+ m; ^+ G
move into Q_wait /*Capacity is infinte*/' a" k% B# q: Y& S; x
move into Q_process /*Single capacity*/5 w" j" f" S( ~. X' z$ a( C! u: T

$ w  t! u  ~" A% X( Ause R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar
* J- V) [2 p, a. @triangular 30,60,90 min
8 C2 n; `( \* n9 ~! \6 S7 pu 60,30 min/ W8 ?' v4 C( G+ B9 K6 _% S

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in P_C, you need to send to die.
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0 K. ?, R# a5 {- Y9 q- \; iThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., y) ^8 x1 e7 Y! o+ H1 Z7 d5 l

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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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