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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,
  }& h1 x2 ?; A3 c6 R" ^# |% G- ^  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.
7 ?( Q5 ]: K9 k- U3 k8 l$ u  Loads are processed by each operator for the following time:
' ], H4 ~& }8 t6 M; {+ J4 [- s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 |; y# R, `* 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.
) I6 ?( v+ P# s5 S9 r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( d/ s% E' I9 CSend 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.6 d! r- r& C: f( Y+ f+ g4 ]. h

8 d' s) W9 q& Q) p) c问题:  S8 }' K" j; b2 c- A! ~
After running the model for 10,000 days, what was the average number of loads in each process?
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; u- `6 k: g3 F' w不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 }" ], i6 m! ]* a* H# e
move into Q_wait /*Capacity is infinte*/7 G, `& r- y" V8 p; v
move into Q_process /*Single capacity*/6 K' y% G6 g6 m
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use R_A for n 60,10 min /*Resource A*/% T1 z+ b6 H  K# v+ s% l

  u  d  b* ~& h4 w% X8 M4 `8 L5 g# {send to P_B
5 y1 {. H+ x, P, ]$ v" |/ a. d5 Send
5 x! O# L6 T+ L4 R$ Q; ?
5 J# g* _% v0 {1 j5 uP_B and P_C is similar
9 u- G7 v% Z8 F% l0 o1 H) `triangular 30,60,90 min) G! M5 ?, R3 i/ `1 |' F+ y, |
u 60,30 min7 m' [6 Q# ?6 X- H6 b/ h7 P6 H
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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9 n$ a+ M  z# l8 r* sRemember 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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