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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,* b; v+ \( F0 w% J2 J, q$ N
  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.
& j: |$ B7 q8 p. p- h  Loads are processed by each operator for the following time:
; w" _/ O! n$ n  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. `: O6 i  ]9 Q8 i# L( A: v5 p  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.
# `* m# g' t) h4 T9 W" F  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% J* q/ i2 K/ u4 e& KSend 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.  Z! k% m$ p  }4 P$ d+ u

6 ?+ W% \/ u. K' z0 T; R问题:8 [% z/ _6 K$ }( G- m7 J
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 arriving0 X$ M# ?& d  `) B, P
move into Q_wait /*Capacity is infinte*/% z4 Z# q" V. A& L
move into Q_process /*Single capacity*/
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1 A; s9 m+ V- a2 ~+ {  M2 Guse R_A for n 60,10 min /*Resource A*/  i' ?1 a' R+ ^9 G/ n" Q) \' x

6 |) {$ O& P6 b: I4 ]3 `send to P_B5 P- V5 G  c7 b6 T1 t! T5 Q
end
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) j7 g0 N- X4 T& Z" m! VP_B and P_C is similar
3 Y0 w7 X( g8 |( M) R& S7 @; ytriangular 30,60,90 min
% v8 J# }2 j( L5 S/ H5 b0 ], N! ou 60,30 min7 e( Z; W3 u: }. U& a2 v, P
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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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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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