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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,) F: T& ?2 c2 r1 _% C; q
  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.
% Q+ w' X% j6 w  L8 }9 R  Loads are processed by each operator for the following time:
# X' i0 `7 y; r, \7 b  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; X6 I" ?5 C, q1 L! {- y1 l  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.
0 J5 i( R: l9 T  S# q1 r+ B2 ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 z. O3 H: `+ R9 i/ l' S& }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.
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. ]) f5 }1 C5 C6 p/ R3 \; {6 L* f1 {问题:% W1 V1 T7 J  t
After running the model for 10,000 days, what was the average number of loads in each process?, h7 `( h! O; i# N* X7 m

" z2 ]& n! [3 o6 w% ^: J$ H2 k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 ~) w1 b4 i1 v$ }move into Q_wait /*Capacity is infinte*/( ]. ^% b- Z+ H3 r3 ~1 `7 s+ N
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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6 U  \$ Z3 d6 Esend to P_B. N! ]$ e9 v' W) N6 T
end
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P_B and P_C is similar  e% H% F0 d- ~. g+ G
triangular 30,60,90 min
) I% Z# ~3 N5 l! O3 v& wu 60,30 min
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( n3 Y' W( \, W, q# J  Y& Zin P_C, you need to send to die.2 `9 r  P2 n. u2 P
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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.2 g/ W& V% p7 d3 P
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. J5 c- u4 l$ l6 x: T1 B7 v( w$ s/ gRemember 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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