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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,: K+ n, p2 m& h. J
  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.
. U; H) P$ Q! Z& u  Loads are processed by each operator for the following time:
0 |! o  R  r# I5 U  X! w  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., w' G* |- h- A' g, 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.& w& V* J$ f* b: w% m# s
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# r! u7 j6 D8 C, a6 BSend 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.! K3 E! t- e1 W4 P7 g

6 w% c! {; G: D问题:; x1 R( `. `$ W! u. B8 e: K
After running the model for 10,000 days, what was the average number of loads in each process?, o. E& W& u* h

, o$ E5 ]  b( F& U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. W+ u% [. d' A
move into Q_wait /*Capacity is infinte*/
* e1 R, n. Z$ ~- C: E+ Y& tmove into Q_process /*Single capacity*/# h. C! i' y" y; X$ S) I

6 Q# j" H' ^$ ~- R' @) Zuse R_A for n 60,10 min /*Resource A*/
1 f; i/ m9 V  Y6 I, a2 q' d8 U- c1 j
send to P_B" b/ Z# g2 r; V- z1 A4 r
end
( ?5 D' r5 \+ k* `8 u& }2 x* W
# t7 U; U: P5 g& A5 _P_B and P_C is similar
) S. n6 i* V0 w# @. }triangular 30,60,90 min
: b/ v* y5 b2 I7 [8 Ku 60,30 min
5 D$ S! @6 S/ q4 n. n0 a
. Q  w3 Z6 C9 t; y1 C/ E) u  C4 {
in P_C, you need to send to die.8 |" o' K6 e( v4 S" m' w

8 n: P9 [& o+ I: V4 RThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& g- d; M% v& W* K2 C# _

  m9 F2 A2 |- w& b" f
: T1 U( I$ h1 A9 Z" N  DRemember 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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