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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,5 e, [1 c# F# r! G. [  g3 J
  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.5 U( |0 {# |' Y2 a6 }2 Y
  Loads are processed by each operator for the following time:' j! Z* X; X, }: l* Q! Y- p
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* u2 u! p! }. m& ^1 v
  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.
% C& b6 O: m$ {7 ^' P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 z$ r: n6 M2 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.- }% F# ?! |! L0 `

9 j; T0 B+ K$ K+ J3 Q& V问题:* y. f! c, u! k* U( U4 b
After running the model for 10,000 days, what was the average number of loads in each process?
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' y1 }6 E: k1 |不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving# o$ a6 Y* ]' R( G8 Y7 g
move into Q_wait /*Capacity is infinte*// d5 D5 I6 ?, |2 n+ r" V8 {; v4 d' j
move into Q_process /*Single capacity*/# f# x4 h5 @8 o: Q. R" h- X: F+ Y
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use R_A for n 60,10 min /*Resource A*/
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: c4 G7 N) f9 c  t! Rsend to P_B
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P_B and P_C is similar
" R9 S' N" z" f+ ?5 V4 Y8 h7 Btriangular 30,60,90 min
7 Z* N) ?4 d( r& _9 vu 60,30 min4 i$ S2 h" Y6 B( H. s
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9 k) K$ J% y% p7 g! U0 din P_C, you need to send to die.
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" z: Y  Z6 C0 C% s' e4 tThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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' X8 J( z4 {6 l7 N6 v( p, ]1 YRemember 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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