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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,* x9 }% g  r# `2 [. G; z! l/ 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.
6 ]3 J8 w  v- J$ f  Loads are processed by each operator for the following time:
, P( t+ L1 p7 A" [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 F* Q* a' b" v; U8 H
  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.
5 P# q8 v9 _3 l) c$ C  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 X& d$ u1 _) X; M( E  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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问题:8 t2 N* l+ {7 f7 h1 z) T, s3 m
After running the model for 10,000 days, what was the average number of loads in each process?8 P+ G! {2 ]3 i5 ^8 ]4 J
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving7 E7 F# `0 D$ U* F- P$ o8 Y2 t
move into Q_wait /*Capacity is infinte*/* o3 D& \9 y# u- @& N# |
move into Q_process /*Single capacity*/) }) S$ ]6 b$ l/ ?; `, X

$ ?! a0 s. [" k3 ]# F6 {. h3 Fuse R_A for n 60,10 min /*Resource A*/* O' N/ V3 O+ _

8 c8 J; R9 U" L* Hsend to P_B* X. e/ M" y! C. p
end
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P_B and P_C is similar
. P$ ^0 M0 N0 Y5 U0 _3 utriangular 30,60,90 min
, u( V7 N. E& y# _3 J2 d; Iu 60,30 min1 J. s6 ^. O* a
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+ a6 r+ z, r2 W$ s( ~in P_C, you need to send to die.$ Q3 r6 w/ a2 Z' y

2 F5 o, s+ v2 f0 n  UThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ E+ H" v5 `( C# c- g2 ~, f  j1 V
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: a; E: p7 B0 e! [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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