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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,
" @$ {7 ?" Z9 G% m$ y. 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.9 j  o. S0 d# G7 @! F
  Loads are processed by each operator for the following time:/ W, G& l. a) J) r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  f# Y4 D2 Q0 P( c- y* E9 ]  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.% i7 n% J- F! |7 u4 O& y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  N. q8 _! e0 h6 z+ M6 ?3 e
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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问题:' `: p/ O% v0 q1 b5 [6 z) U
After running the model for 10,000 days, what was the average number of loads in each process?
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6 Z0 Z3 g0 U2 l' ^不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% g( L9 p+ {0 Fmove into Q_wait /*Capacity is infinte*/
* f5 @7 Z5 E# emove into Q_process /*Single capacity*/2 I+ O" A, Y; I. p' q' [& D4 _

, m3 K% l8 l, kuse R_A for n 60,10 min /*Resource A*/- g7 ^: n' A: h* }. D/ Z$ n) S

* h7 k' n& n# K6 ?: d% p* Zsend to P_B+ e! X9 ?. T/ Q- a$ V; N- L
end" q( ]1 X  m. e, f+ T6 y$ @

; n8 g% W, H6 |4 d, U, u0 DP_B and P_C is similar
  _' {$ i4 a" Y0 A( ]& a( e( A+ `triangular 30,60,90 min+ `+ n- h" N/ F* F
u 60,30 min
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in P_C, you need to send to die.9 N# `. w2 U" H( ^

; N- A. P- S( {3 E' jThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.! R7 ~: r: @9 O# m( u. I& Q

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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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