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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,6 T; \7 ?" ^! Y( o, P/ \" n& 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.
+ I/ k( S- g7 r8 `* G% K( m  Loads are processed by each operator for the following time:
  r) W! O* _# T" R: F& j  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 ~0 Q& h8 E% v! e+ }, t
  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.4 T; C: Y- n7 g8 D7 A8 s& v! ]$ Z) z3 T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ T1 \6 ~7 ^, t2 |. W% m. g
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:3 }; p* i; n( t8 _0 ~7 ?' X
After running the model for 10,000 days, what was the average number of loads in each process?9 R0 h/ ~4 q6 O3 g* }4 ?
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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# E7 x7 g/ e+ E
move into Q_wait /*Capacity is infinte*/
$ Q( [) {9 Z9 B8 nmove into Q_process /*Single capacity*/
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2 W' ?3 @4 R  {( xuse R_A for n 60,10 min /*Resource A*/
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send to P_B# b0 S! y/ x: [) }- g
end/ Z, G! |) [) G4 X

/ F' E1 n+ @& q4 @# ~- }0 PP_B and P_C is similar  n) S* u. M7 `* I' l
triangular 30,60,90 min
" {1 p  i) ~3 L- |( y& au 60,30 min9 Y* Y! V' n1 M. C3 d
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7 p7 f) t2 ]7 ], h# ~# ^3 I+ Ein P_C, you need to send to die.3 O* E  Y5 y! S4 k1 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.
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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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