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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,
- u* y/ \/ J% {5 n& h  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.) O2 S6 K: e( e
  Loads are processed by each operator for the following time:) T& i3 O% _5 V, ]
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) c( V0 B  e4 b  p3 K
  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.
" C1 B' T  J7 b  g" `% ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; j" S5 N, _* O2 G1 ?' i8 |9 {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.. P3 {& k) }" p9 I

  i* E! t: _2 c, ~2 }问题:
9 }0 M# _, e0 U5 B$ R& jAfter running the model for 10,000 days, what was the average number of loads in each process?
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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& F/ A2 }( x+ j( L0 E% ^. U+ B6 v
move into Q_wait /*Capacity is infinte*/
) l, \! u) G* J% P. Dmove into Q_process /*Single capacity*/
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$ d9 H  x+ O0 p" nuse R_A for n 60,10 min /*Resource A*/
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send to P_B1 x% M' E! }: d+ l8 \  |
end; c  b: k" @  C8 ~+ ]8 ^( c6 v

% x# y# }9 ]1 }+ L3 ^P_B and P_C is similar& A8 a  t6 h6 A8 w: q
triangular 30,60,90 min
( q1 m# h! Q  M& J, t% \' u# Z4 [u 60,30 min
  y1 I2 e8 G: Q9 y7 D( ]5 n- `7 `% _3 O9 h( B% V0 _0 N- J
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in P_C, you need to send to die.; b- X1 Y3 s! B: A
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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.  i* C# R, z  T
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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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