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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,
! z8 r' D0 h% \! Q( m( |  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.) R* K& R9 U5 t; p* ]  U5 J; Y) s- O7 ~
  Loads are processed by each operator for the following time:
5 S1 M- s# c6 X* v' a  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 \; N2 l$ d: N) H( D7 N  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.3 o1 C, G1 A2 Z; w7 O( a
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.. N0 _' ]5 c, |( ^0 l; c4 K  m. J
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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$ S/ L8 s. P" {' i问题:
( l$ Q' ~* r3 g7 ?5 hAfter running the model for 10,000 days, what was the average number of loads in each process?* Q/ D+ W- x" T. k2 k
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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 arriving
9 |2 s- D/ _$ x# c4 @move into Q_wait /*Capacity is infinte*/
" L8 T. `% _' y7 d. ?move into Q_process /*Single capacity*/
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5 D$ X, V. S2 @0 X# \. euse R_A for n 60,10 min /*Resource A*/
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' w3 z2 r8 I6 C, g: v' X. `send to P_B9 t5 d, \1 J' u3 e- r7 l9 J1 v
end: p& W2 U, R0 h$ V( ^+ W

  Q% l. o& o, h9 MP_B and P_C is similar
/ j4 J: m9 n7 ~& @8 xtriangular 30,60,90 min& C. W$ }7 U0 v( \: s
u 60,30 min" C* P+ C& |* F: ?

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in P_C, you need to send to die.3 v# I( l# R1 L0 b8 _6 X

  F+ X! l, G) b6 zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& w! {5 U1 ~  e5 O/ f' v7 T% o2 `7 g
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( e0 h) t$ e. k8 {1 {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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