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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,
7 u. E6 J" N# X# n; x' L  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.
8 g! Y8 y6 r8 ~# z9 b: }, a  x' D  Loads are processed by each operator for the following time:/ \) H2 V  [. h* `4 H3 T3 X
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 a" a/ L" @4 @" c7 k
  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.
7 \' q( }3 V# ^( ^  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
8 C% ~& b, _$ K$ Q$ }% xSend 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.9 X9 ]; ~# ?( I! N  e6 D
9 D1 z& T2 {2 \* B9 Q  `
问题:5 o' y6 I4 w' Z, O# }" [9 r
After running the model for 10,000 days, what was the average number of loads in each process?6 o; B  j( t; h7 M9 l

2 u9 Z6 a6 }  p/ M不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. W; G! |  u( P& x8 n; mmove into Q_wait /*Capacity is infinte*/
5 x. N5 L5 K; y8 umove into Q_process /*Single capacity*/# j( f1 |' A" [# U/ T& A8 k( l

+ h3 [! v: S- Cuse R_A for n 60,10 min /*Resource A*/: e8 V! F$ c4 X! m9 s, I( ?4 ^4 ~

/ Q: @9 D9 a8 i3 p, g! |send to P_B* A) c' {' F. K9 B+ H; i* p. x
end
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P_B and P_C is similar
, O* W4 J3 N- |triangular 30,60,90 min  j, k  \* B# x0 B/ A
u 60,30 min2 `" f5 Q0 I: P7 e  O7 o9 W
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, u0 e) d' j) o1 Qin P_C, you need to send to die.( Q% [4 Z( ?  S4 U

) e. F" R! `4 X) `Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
  u" b, R( |' ^; W+ s4 C8 x8 X! E6 \/ n3 ~0 \! l

1 e, m: B4 o. ^5 g1 Y( \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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