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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,
8 a5 g, x& [" b* @  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 {& k) F% W: v1 ]& R
  Loads are processed by each operator for the following time:
+ U& d) U, {3 e% y) b  {, d% O  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& j, b! M8 ~) U8 X7 v% }
  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.9 h! Y. Z! R+ n* {' T( @% m4 t- t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) \+ c. u8 f& D9 G8 Q. ?* xSend 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:
! W: y$ Q8 B" eAfter 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/ v  h$ g5 x- S! T& K  E% V" j( A
move into Q_wait /*Capacity is infinte*/
9 M# ]1 [2 j, V# W0 j0 g; ^move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
& ]0 C# p: T. ^4 Q4 nend
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' |; |# g4 k. J- |/ TP_B and P_C is similar
" \5 i4 @; A2 Ptriangular 30,60,90 min
# {8 ^6 E: x- g0 U6 F; f% j7 au 60,30 min
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) ^3 w  m: K! Yin 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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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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