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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,( j" Y  G6 ~& d  U2 @& H& A9 h( 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.
% x+ Z" J3 U! `. h, Y  Loads are processed by each operator for the following time:- N" X8 a* E% x
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. p* Q4 x7 t3 Z* L6 B, m, Q2 G
  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.% Q! M4 x7 m: I5 X
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* p/ W# V' _! I7 _; P0 e6 N
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:2 n! p( o8 r+ M" ^4 g) [1 M
After 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; j& N+ B7 i9 o4 M( Q7 m
move into Q_wait /*Capacity is infinte*/
7 }/ r* ~" K4 W  O! O0 V5 O! k1 K, Ymove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B; n  Y8 A/ A8 _$ w9 q  o
end  Q; ^% e2 y5 X: E& e
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P_B and P_C is similar) I5 p: E& ^4 e8 I8 P. {- a( [
triangular 30,60,90 min; [( l* H: r$ z8 i' n9 V
u 60,30 min) \  P) `8 e, h+ Q  ]+ r
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in P_C, you need to send to die.2 U! e' T7 J+ s& N! @/ A8 L  q6 [# G
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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.$ t0 ^' f. E$ N4 B* U( J
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  Y/ F- k; p. ?/ Q/ p2 n) S0 bRemember 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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