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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,1 o" @& Q' V9 Y+ v1 p& H$ I2 L$ ?
  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 P; `+ X1 v# ~/ N, `
  Loads are processed by each operator for the following time:
& I' t+ j2 F* C8 e2 M  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( Q! `0 [7 a+ B7 ?. _' @  J. u) O$ ]
  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.) V/ {5 R$ y# A9 Y  E  W3 w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 ~4 T# l! U6 M6 h: fSend 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.3 O' C+ |7 |! L' F/ o) O% a

- Y# T. z% O5 t- T1 V! Q" o问题:
, ?% _6 s/ M5 I9 CAfter running the model for 10,000 days, what was the average number of loads in each process?# a2 j2 _7 o/ I+ O/ M! K0 i8 M

% K( `9 @6 x# ~5 w+ R- x& O0 Y! M不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ B7 y+ R; a5 H6 j. D% H# a
move into Q_wait /*Capacity is infinte*/2 S; b  x* x7 m" L' V
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/; b" Z. e0 n5 S% o4 W" N6 |3 D

! f1 f, Y& z% ^( B* ~send to P_B
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P_B and P_C is similar3 U- t$ g, k" L6 O5 c" ^
triangular 30,60,90 min1 |- S, u9 G: N+ _
u 60,30 min
2 R% \* M- s6 ?. q/ ?4 L
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3 B5 f3 A9 y$ i8 w4 P2 X! o+ Uin P_C, you need to send to die.. j1 q+ [/ f, t7 P# F

" i6 X3 n  V7 G# zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.) Q8 [: [" Z1 z1 T( S* T0 m

3 x  @. f! P. P/ z  _/ Q; ?7 K8 G: J
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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