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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," f% S. Y! [( M" Z! y& u$ E
  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.
, A+ [) j: Y/ V7 b: q: ^  Loads are processed by each operator for the following time:# y  d6 x8 z5 c* i! q- J7 g, l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 b; K+ w( {$ {$ ?( V  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.
. C5 ?5 E; h/ A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: h* q1 l& x9 [6 w/ l% F
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.2 H$ S5 ^' C8 {, t1 ?

- H  w$ Q+ L* {6 `+ c6 z问题:9 }) q" }6 {- i( z& o- M4 b
After running the model for 10,000 days, what was the average number of loads in each process?
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$ A: d+ I& f; o* O2 h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ [1 E" W% P- J/ ^move into Q_wait /*Capacity is infinte*/
5 m# B, L. |4 D* G- W9 L9 f' Kmove into Q_process /*Single capacity*/
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( X  d% ?2 A. puse R_A for n 60,10 min /*Resource A*/
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0 X! p/ D5 X( I: {4 `2 Jsend to P_B* z* t; i" h& i7 k; `
end0 L4 E, o* ]3 n  v2 v/ ~3 l) f. D  N& b

' u! s# Z' P& }5 JP_B and P_C is similar3 m4 K9 }$ H  y, a: k
triangular 30,60,90 min
! a* |+ ]+ P% Cu 60,30 min
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in P_C, you need to send to die.  ~" a( J3 x& B7 v# k
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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.1 _% l4 t9 O- g0 I

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- K, b8 n3 J, G2 b' H: Z/ nRemember 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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