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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 L: _8 k5 S9 g& F$ @& y
  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.. _4 \2 @1 M" Y! N8 P/ E: T
  Loads are processed by each operator for the following time:
7 W9 G" [5 r  ]9 I' Q! l1 m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 `  X; t: m# I4 T  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." B/ I6 n5 }3 L& a; k  \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
% j) J/ y( b+ i- x! y7 O" MSend 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:. v8 {0 x  R7 ]5 d) z
After running the model for 10,000 days, what was the average number of loads in each process?
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' Q5 d4 q5 t& Q# I" v; `& L" S不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving6 S6 Z3 B/ M$ W) e* J5 G
move into Q_wait /*Capacity is infinte*/4 y& X. I$ o! j9 y  Y
move into Q_process /*Single capacity*/$ S2 }8 r5 A1 X# v' h: S

, N0 d6 [; g6 x9 Huse R_A for n 60,10 min /*Resource A*/0 q- ^# [" V  B+ E* G- Q
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send to P_B- D" y# E, {$ \) c+ G+ p; {
end- Y8 W9 d6 `; |7 C9 W% J0 B

8 [" @# S# U( r  a! h! i3 Y7 gP_B and P_C is similar1 l4 M6 U" Y- ]/ ~4 j
triangular 30,60,90 min, C6 Q& O1 y& g' _
u 60,30 min
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/ K/ G" ]; \! R0 Rin P_C, you need to send to die.4 j8 }% K/ c7 o% S* R# }9 l
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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.3 O" Y1 B. I# A) o5 v

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% f  v# y( j0 Z# xRemember 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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