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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,
- p+ m: C. l& l/ b) `* d  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.
4 m) {& ~8 A( J5 @( `. d$ Q  Loads are processed by each operator for the following time:; @6 V' |7 k, W" w, W
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ I5 M( J, t' z0 Z3 @* V& a5 B  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# ?* j" B5 p0 e: p0 o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( w" i4 I. Y0 u) @7 d! v" pSend 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.0 y& G  n: b# y, W3 t! `# E

  t" S3 `) ^9 U2 ?5 G, C( s问题:
; U0 x" m3 S- n. A" o6 _, \5 bAfter running the model for 10,000 days, what was the average number of loads in each process?( T9 {# s: @& d5 P' }7 M

( n2 p, w% D# D不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  Z& g' D9 R6 {. j1 f& L4 x. Q& S
move into Q_wait /*Capacity is infinte*/0 h2 d4 Y' K0 P) V( d* [9 J7 Z$ p6 k
move into Q_process /*Single capacity*/' c# j- W" C2 @  C: O* R, Z
  F: A- U' Q6 R& g7 o, `: x" }) ~
use R_A for n 60,10 min /*Resource A*/# }2 V+ H! E9 Y8 M: h
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send to P_B# I' S/ T5 ^7 }$ r$ ~
end
9 l0 W/ O* h4 Q6 K' y  A- Y4 X8 U* R: w% R  d8 Y- _) q  `- j9 [
P_B and P_C is similar
5 s- J3 R/ _5 z6 ~5 M) ^triangular 30,60,90 min( W1 K7 n' h. ]3 `
u 60,30 min8 T% g9 I- D2 T$ ~1 [3 C
- ~6 x; m% ^4 |' e
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in P_C, you need to send to die.
/ @8 }( G7 ]& s2 ^( H
: \" N) E) s0 l+ N6 a8 n/ oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 j- M3 R) u5 m) ^1 e! ^9 G

% ~9 J: M5 S0 u/ Z4 ?2 A- W8 O! S) P, o8 l/ b  P
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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