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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,; K+ D  {; t6 ?# I* I
  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.
# k+ i" b! G/ X9 N  Loads are processed by each operator for the following time:
* U, {. H! I" ~" e  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 d) E: R! o- [/ C5 D- W( B  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.! Q, U- w; O! W* C$ j, |
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ P$ q+ b4 n0 ?2 E* J6 O: d% h# `
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.5 x. T8 U( ], Q! {; W& s- Q

  Z  x; l1 k2 c. b/ i6 ~问题:
: l5 q5 ]/ c2 N( qAfter running the model for 10,000 days, what was the average number of loads in each process?4 m. g( u6 E* {+ W% W
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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
, c' ?5 U1 |& j2 Pmove into Q_wait /*Capacity is infinte*/
: b5 M$ U8 u- H# s1 t* Smove into Q_process /*Single capacity*/8 S/ y) Q3 X$ o/ v! l2 k* `

7 n, G; A5 ^0 E1 Z3 E; q5 {3 M' wuse R_A for n 60,10 min /*Resource A*/
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send to P_B* V$ q% A  p4 h0 Z
end
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P_B and P_C is similar& t2 m. M) c' B  _2 U8 u
triangular 30,60,90 min
8 x5 |7 ~- \" H7 ju 60,30 min2 I8 {: k4 ]- t! A3 I
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/ v$ E5 s4 V2 @. j+ p+ p6 W% ^2 ~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.( W3 }' a; d6 @- d, ]
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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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