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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,4 o! K% }9 F5 g, R6 k8 G. n  N0 k
  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.0 Y+ @* U6 l9 [* e6 Y( L( Y( k$ @
  Loads are processed by each operator for the following time:+ Z4 Q# @; A  e4 ~! J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  ?! S. ~% |) a" z! W  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.; h9 m$ ~( D; I/ ?/ S8 w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 J! e3 Y. c0 SSend 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.. u# b" Y. x! ~4 d0 P

9 M# R+ b# }$ e( ^; J$ n/ |问题:
& G8 e1 A/ a* \; \3 P" oAfter running the model for 10,000 days, what was the average number of loads in each process?2 }3 v% x2 G% k  T$ z7 o
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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  @% a3 j  B8 Z: [! Q+ h) A
move into Q_wait /*Capacity is infinte*/
4 E7 g4 Q" X7 {move into Q_process /*Single capacity*/! h5 `; z0 \' J5 B( p) N. K

8 X2 c! j, @7 N4 k* x+ K& Y) Q/ [use R_A for n 60,10 min /*Resource A*// T. C! v' y" w8 j! I
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send to P_B
* e. e' T9 e8 Lend. Q, w/ F' K" A
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P_B and P_C is similar9 _# m" z0 @1 A/ c3 x
triangular 30,60,90 min
! w( c7 C: E, u9 M. q& ^u 60,30 min
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* S9 K$ S7 U3 E9 q/ V& ?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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0 u, r# ?) c3 N9 g8 F2 o% c) FRemember 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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