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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,
$ D$ @% J5 t  l/ w2 r  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.! R1 H2 I2 d/ a- V7 Z9 Q
  Loads are processed by each operator for the following time:
& a" [7 s% _+ e/ G4 ?7 F( t  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 _* a' p6 G3 K. \% G0 u" p8 M
  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.
% z3 [; g* Q4 W/ E1 G& g7 M  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. u: n# t5 A& {# E$ t) |Send 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.6 p: }( R/ @  H  E8 v
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问题:! E3 g+ x& l/ q7 Q+ d) W
After running the model for 10,000 days, what was the average number of loads in each process?# J; h# C. n3 b' ~
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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
4 D" j4 `( @, Ymove into Q_wait /*Capacity is infinte*/5 j/ {! Q; [; g/ F# r" k8 B
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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+ {( w; r1 W. M; g# fsend to P_B+ L, _2 N. c' d' `3 g
end$ L# W9 \% T% u. [  T- R

7 q* I# |# X# v& [* J  B& kP_B and P_C is similar* x, M( W+ L% m
triangular 30,60,90 min6 y$ r; x0 a7 Z; \
u 60,30 min
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in P_C, you need to send to die.( a2 a6 J; ~4 S4 X8 u

  p) s* \/ K% sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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' O5 L. b0 u0 F7 t: bRemember 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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