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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,6 G7 D7 G: _* M$ `/ W2 s/ u
  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.
" d4 K  q  i- t' q0 ~" b. X/ X* a  Loads are processed by each operator for the following time:
$ `+ ]9 |# r" d! W  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- o: ~$ U3 L& F2 E2 J  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.7 ~$ T2 w. f- h9 a2 V( c5 c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! K' I3 y( E+ ?# o! _' rSend 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.$ ], q8 X7 ^3 c! h& f

, J( Q# Z9 R8 T. L, h问题:( r( l) G; U4 G6 ]
After running the model for 10,000 days, what was the average number of loads in each process?! y- n# `7 u+ y/ k  a
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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
# s* P% }( ]' N" o6 t+ r! Fmove into Q_wait /*Capacity is infinte*/
1 N" b- @$ @9 L. _1 Q1 @move into Q_process /*Single capacity*/1 N$ Y) e/ B) F  }

/ w: b! f% H, }8 e" b& guse R_A for n 60,10 min /*Resource A*/
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7 {5 G2 E# L: r/ rsend to P_B
. j9 @4 |! d8 ?# C9 C- @end
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P_B and P_C is similar. d2 w1 y/ d7 e( s, D' `
triangular 30,60,90 min
* Z: {4 H  @. x0 t! O$ tu 60,30 min
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in P_C, you need to send to die.
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" s8 y1 l  {  h5 ^* k5 I8 U5 g: rThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& G4 J4 e& i* @0 a/ \+ D
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, c! c& X0 Q! e6 vRemember 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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