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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,
6 L0 Y, u: N# q5 @  @1 F0 f  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.- H3 F0 _' x7 w
  Loads are processed by each operator for the following time:
* _. A* g, Q9 X7 n( ^; s0 p. W9 X7 f  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. s" Z# F  N! {9 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.
* Z" R6 i2 q1 d7 R. F  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* R3 o% _# M$ tSend 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.5 s/ _  f+ I' |: k4 B5 d1 p

9 @+ X/ o8 p: c6 a问题:
- b- U1 I9 T: B/ SAfter running the model for 10,000 days, what was the average number of loads in each process?
  g9 J+ l, o- r$ L9 G. k( ~" u# [% b2 d- X: b" G- F0 w9 W
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( |$ z) L& @5 _+ D9 @. t' smove into Q_wait /*Capacity is infinte*/
0 g  G' J" Q% J) I# ^move into Q_process /*Single capacity*/! i' i6 q6 k2 ~1 d6 _* Z$ u

- `7 N( x0 j' B' i- q- f' u$ ^use R_A for n 60,10 min /*Resource A*/
  G* h4 [; ]; X- ~2 D7 @( Y
/ I* x$ [3 Q$ u' r5 s! |  Bsend to P_B+ g4 {4 v) t- a4 K+ `
end
; {4 r; [& R, [8 I* B. G* M- k  O5 c  L8 P
P_B and P_C is similar$ S4 l& f; O) k0 l. x6 [
triangular 30,60,90 min
& k, {, J' q4 {" G6 Q! E- yu 60,30 min
7 G- b( W2 P6 r9 ]1 N2 }8 i4 u/ _( p" ~( K$ N
9 x- s5 o$ x8 k' J' s  B
in P_C, you need to send to die.: j, q$ ?5 o/ e% Q+ R# M) x

2 O9 o: y7 ^( e! W8 jThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* e: Q, L1 m( C" ]; t0 ?) o' x

$ x8 u: s8 K9 b' `' y+ ^, _2 ]! n+ o3 W1 ?3 u* Y8 a
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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