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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,
* Z) ]) ?2 H' T  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./ }7 ^/ P2 z* t% d0 r
  Loads are processed by each operator for the following time:
4 V% p/ i, X- \  x  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 |# D! p* F9 t* X# @  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.. c3 i& i: J% I; w2 V( `* F7 L# q# Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# N* z! m* K. A
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:
9 \4 b7 D# G1 b" k' p& zAfter running the model for 10,000 days, what was the average number of loads in each process?% K  @5 n4 i, ]# e* w  S; 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 arriving8 Z0 @8 B' i5 N/ a/ l
move into Q_wait /*Capacity is infinte*/
) _& s- [# I* R  Hmove into Q_process /*Single capacity*/0 t/ U0 {: r! W/ P

$ }8 h' b- `, ]% Buse R_A for n 60,10 min /*Resource A*/8 N& e+ J, Q; `0 ~+ K6 A5 P2 _2 G3 Y2 y

) m4 Q, W6 O* B* ?; T8 @9 jsend to P_B6 j1 ]6 ]( t0 K+ V
end7 X1 |4 m) G- E" w0 a: O

4 W  @' O+ U4 [2 }6 c% nP_B and P_C is similar5 O1 P6 n' @) {2 [3 y  @. n
triangular 30,60,90 min
. _4 H4 a  F( ]- R- v) Fu 60,30 min8 l  W: E' V+ w- |
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/ S( `+ ]# e5 }7 min P_C, you need to send to die.$ W- o7 h* H; X( y& |9 u
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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.! M" ~, }  }, w/ P

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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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