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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,1 b3 y: M& `6 n
  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.
. e  _% a1 w8 g) T* P% V  Loads are processed by each operator for the following time:' b* L; z% ]! _
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 |$ j  M7 K+ O: Q1 t  S  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.9 {  L1 z& r6 k" t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 K$ e* H4 u) _% 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.2 L2 A1 f* G- L) t" V1 R

4 A# z: E$ j$ @1 h, D问题:
2 W; Y8 \' G( Q/ A: l' AAfter running the model for 10,000 days, what was the average number of loads in each process?
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3 K3 ~$ f& Z/ a不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ `9 \7 C' u" \$ S6 z4 r- H0 j4 `
move into Q_wait /*Capacity is infinte*/) y3 i5 @# Z; y" j! }
move into Q_process /*Single capacity*/2 N5 x7 ~: I; W, |
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use R_A for n 60,10 min /*Resource A*/
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$ f8 [( F9 n$ U, t% Z- d& usend to P_B
% K0 @8 H6 [! A: ]% H6 j* yend3 O) i# G$ Q& S* b

! ?/ s# m# |- Y4 X: JP_B and P_C is similar
. S  t; A* [. d/ htriangular 30,60,90 min" }8 w1 z% w* |) n, h8 P, H. Z
u 60,30 min
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in P_C, you need to send to die.
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  N+ s% V1 C) H8 S3 ]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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3 m! z& ^. a+ [# k' c+ p2 U
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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